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Sirajudheen P, Vigneshwaran S, Thomas N, Selvaraj M, Venkatesan K, Park CM. Fabrication of MoS 2 restrained magnetic chitosan polysaccharide composite for the photocatalytic degradation of organic dyes. Carbohydr Polym 2024; 335:122071. [PMID: 38616093 DOI: 10.1016/j.carbpol.2024.122071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/04/2024] [Accepted: 03/15/2024] [Indexed: 04/16/2024]
Abstract
Chitosan (CS) polysaccharide is expected to exhibit greater ionic conductivity, which can be attributed to its increased amino group content when it is blended with different semiconducting materials. Herein, the work used this conducting ability of chitosan and prepared a heterogeneous MoS2-induced magnetic chitosan (MF@CS) composite via the co-precipitation method, which was used to scrutinize the catalytic performance with Methylene Blue (MB) and Malachite Green (MG) dyes by visible light irradiation. The saturation magnetization value of the MF@CS composite is found to be 7.8 emu/g, which is less when compared to that of pristine Fe3O4 (55.7 emu/g) particles. The bandgap of the MF@CS composite is ∼ 2.17eV, which exceeds the bandgap (Eg) of bare MoS2 of 1.80 eV. The maximum color removal of 96.3 % and 93.4 % for MB and MG dyestuffs is recognized in the exposure of the visible spectrum, respectively. At a starting dye dosage of 30 mg/L, 0.1 g/L of MF@CS, a pH level of 8-11, and 70 min of contact with direct light. The photocatalyst provides extremely good durability for a maximum of five phases. Hence, the MF@CS matrix is a viable and appropriate substance for the efficient treatment of effluents containing dye molecules.
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Affiliation(s)
- Palliyalil Sirajudheen
- Department of Chemistry, Pocker Sahib Memorial Orphanage College, Tirurangadi, Malappuram, Kerala 676306, India.
| | - Sivakumar Vigneshwaran
- Environmental System Laboratory, Department of Civil Engineering, Kyung Hee University-Global Campus, 1732 Deogyong-daero, Giheung-Gu, Yongin-Si, Gyeonggi-Do 16705, Republic of Korea
| | - Nygil Thomas
- Department of Chemistry, Nirmalagiri College, Nirmalagiri P.O, Kuthuparamba, Kannur, Kerala 670701, India
| | - Manickam Selvaraj
- Department of Chemistry, Faculty of Science, King Khalid University, Abha 61413, Saudi Arabia
| | - Kumar Venkatesan
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Khalid University, Abha 61413, Saudi Arabia
| | - Chang Min Park
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea.
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2
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Krishnan A, Swarnalal A, Das D, Krishnan M, Saji VS, Shibli SMA. A review on transition metal oxides based photocatalysts for degradation of synthetic organic pollutants. J Environ Sci (China) 2024; 139:389-417. [PMID: 38105064 DOI: 10.1016/j.jes.2023.02.051] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 02/22/2023] [Accepted: 02/27/2023] [Indexed: 12/19/2023]
Abstract
This review provides insight into the current research trend in transition metal oxides (TMOs)-based photocatalysis in removing the organic colouring matters from water. For easy understanding, the research progress has been presented in four generations according to the catalyst composition and mode of application, viz: single component TMOs (the first-generation), doped TMOs/binary TMOs/doped binary TMOs (the second-generation), inactive/active support-immobilized TMOs (the third-generation), and ternary/quaternary compositions (the fourth-generation). The first two generations represent suspended catalysts, the third generation is supported catalysts, and the fourth generation can be suspended or supported. The review provides an elaborated comparison between suspended and supported catalysts, their general/specific requirements, key factors controlling degradation, and the methodologies for performance evaluation. All the plausible fundamental and advanced dye degradation mechanisms involved in each generation of catalysts were demonstrated. The existing challenges in TMOs-based photocatalysis and how the researchers approach the hitch to resolve it effectively are discussed. Future research trends are also presented.
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Affiliation(s)
- Athira Krishnan
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kerala, 690 525, India.
| | - Anna Swarnalal
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kerala, 690 525, India
| | - Divine Das
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kerala, 690 525, India
| | - Midhina Krishnan
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kerala, 690 525, India
| | - Viswanathan S Saji
- Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia
| | - S M A Shibli
- Department of Chemistry, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala, 695 581, India
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Kim CM, Chowdhury MF, Im HR, Cho K, Jang A. NiAlFe LTH /MoS 2 p-n Junction heterostructure composite as an effective visible-light-driven photocatalyst for enhanced degradation of organic dye under high alkaline conditions. Chemosphere 2024:142094. [PMID: 38648984 DOI: 10.1016/j.chemosphere.2024.142094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 04/08/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024]
Abstract
Designing of an effectual heterostructure photocatalyst for catalytic organic pollutant exclusion has been the subject of rigorous research intended to resolve the related environmental aggravation. Fabricating p-n junctions is an effective strategy to promote electron-hole separation of semiconductor photocatalysts as well as enhance the organic toxin degradation performance. In this study, a series of n-type NiAlFe-layered triple hydroxide (LTH) loaded with various ratios of p-type MoS2 was synthesized for forming a heterostructure LTH/MoS2 (LMs) by an in situ hydrothermal strategy. The photocatalysts were characterized by XRD, SEM&EDX, TEM, FT-IR, XPS, as well as UV-vis DRS. The photoactivity of photocatalysts was tested by the degradation of Indigo Carmine (IC) dye. The optimized catalyst (LM1) degrades 100% of indigo dye in high alkaline pH under UV light for 100 min. Besides, the degradation rate of LM1 is 15 times higher than that of pristine NiAlFe-LTH. The enhanced photoactivity is attributed to the synergistic effect between NiAlFe-LTH and MoS2 as well as the p-n junction formation.
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Affiliation(s)
- Chang-Min Kim
- Future and Fusion Lab of Architectural, Civil and Environmental Engineering, Korea University, Seoul 02841, South Korea; Department of Global Smart City, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Mir Ferdous Chowdhury
- Department of Global Smart City, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Hong Rae Im
- Department of Global Smart City, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Kyunghwa Cho
- School of Civil, Environmental, and Architectural Engineering, Korea University, Seoul 02841, South Korea.
| | - Am Jang
- Department of Global Smart City, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, Republic of Korea.
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Saxena I, Ejaz SM, Gupta A. Synthesis characterization and application of butyl acrylate mediated eco-friendly silver nanoparticles using ultrasonic radiation. Heliyon 2024; 10:e28309. [PMID: 38560218 PMCID: PMC10981054 DOI: 10.1016/j.heliyon.2024.e28309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 03/14/2024] [Accepted: 03/15/2024] [Indexed: 04/04/2024] Open
Abstract
In the present investigation, with an effort to provide appropriate material for future applications, we have touched on two viable advancement targets: the production of silver nanoparticles (Ag-NPs) employing an ultrasonic approach and the use of Ag-NPs in environmental remediation. A green economical method was involved to prepare Ag-NPs using butyl acrylate as a stabilizer. The following techniques were used for analysing Ag-NPs: energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), powder X-ray diffraction (XRD), and Fourier transformed infrared (FT-IR) spectroscopy. X-ray diffraction (XRD) analysis for the lattice characteristics showed that Ag-NPs have a face-centered structure with an average crystallite size of 9.51-11.83 nm. FE-SEM and TEM analysis were used for morphological investigations, and revealed that Ag-NPs had a spherical shape with an average particle size of 16.27 nm. The EDX profile displayed a strong signal at ∼3.0 keV, which indicated that the samples comprised silver. UV-Visible spectrophotometer with the absorption maximum occurring between 401 and 411 nm further confirmed the formation of Ag-NPs. The dye degradation effect of synthesized Ag-NPs on methylene blue and Rhodamine B was analyzed to assess their ability for environmental remediation, and results showed that around 100% of the dye degradation effect. This study has provided a most plausible mechanism for the dye degradation.
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Affiliation(s)
- Indu Saxena
- Department of Chemistry, University of Lucknow, Lucknow, 226007, India
| | | | - Aditya Gupta
- Department of Chemistry, University of Lucknow, Lucknow, 226007, India
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Zala D, Mishra AK, Mukhopadhyay I, Ray A. Structure-led manifestation of photocatalytic activity in magnetically recoverable spinel CuFe 2O 4nanoparticles and its application in degradation of industrial effluent dyes under solar light. Nanotechnology 2024. [PMID: 38593755 DOI: 10.1088/1361-6528/ad3c48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
An efficient removal of the photocatalysts used in the decontamination of water is crucial after its application beside its expected visible light sensitive activities. This study presents the synthesis of magnetically separable CuFe2O4nanoparticles (CFNPs) with enhanced photoactivity under AM 1.5G sunlight. A simple two-step process involving co-precipitation and hydrothermal treatment is employed, with subsequent annealing at temperatures from 200 °C to 1000 °C to synthesize the CFNPs. The characteristic features of the highest photoactive tetragonal phase of CFNP are confirmed by powder XRD studies with Rietveld refinement. This scheme strategically controls the growth of a highly photoactive tetragonal phase with predominant (224) facets over other less active facets in cubic CuFe2O4. Mott-Schottky analysis confirms the p-type semiconducting nature of CFNPs. A favourable direct optical band gap of 1.73 eV as well as photoluminescence emission quenching for visible photons show that the (224) oriented CFNPs are good photocatalysts in the visible spectrum with demonstrated organic dye degradations, including methylene blue and others. A density functional theory-based approach validates that the adsorption of such dye is thermodynamically more favourable on (224) facets of CuFe2O4to facilitate the redox action by the excitons.
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Affiliation(s)
- Devanshi Zala
- Department of Solar Energy, Pandit Deendayal Energy University, Department of Solar Energy, Gandhinagar, 382426, INDIA
| | - Atul K Mishra
- Department of Solar Energy, Pandit Deendayal Energy University, Department of Solar Energy, Gandhinagar, 382426, INDIA
| | - Indrajit Mukhopadhyay
- Department of Solar Energy, Pandit Deendayal Energy University, Department of Solar Energy, Pandit Deendayal Energy University, Gandhinagar, Gandhinagar, Gujarat, 382426, INDIA
| | - Abhijit Ray
- Department of Solar Energy, Pandit Deendayal Energy University, Department of Solar Energy, Pandit Deendayal Energy University, Gandhinagar, Gandhinagar, 382426, INDIA
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Joseph M, Paulson F, C N, S A, Remello SN, Haridas S, Aravind UK. Layer-by-layer assembled graphitic carbon nitride membranes for water treatment. Chemosphere 2024; 353:141544. [PMID: 38408573 DOI: 10.1016/j.chemosphere.2024.141544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 01/17/2024] [Accepted: 02/23/2024] [Indexed: 02/28/2024]
Abstract
Meeting societal demand for potable water supply remains one of the prioritized challenges faced in the modern era. The anthropogenic intervention has led to a dire situation threatening ecological balance and human health. There is an inevitable need for the development of new technologies and innovations in existing technologies for water treatment. Photocatalytic Membrane technology, encompassing the merits of membrane filtration and photocatalytic degradation has evolved as a potential and reliable technology for sustainable water treatment. Innovations in photocatalytic materials and membrane fabrication techniques can lead to the goal of commercialization of membrane water treatment technology. Herein, we demonstrate the potential of graphitic carbon nitride (g-C3N4) and its functionalized analog as photocatalytic membranes for sustainable water treatment. g-C3N4 and Tetracarboxyphenylporphyrin sensitized g-C3N4 (g-C3N4/TCPP) was introduced onto commercial nylon membrane surface via a layer-by-layer (LBL) assembly method using chitosan and sodium salt of polystyrene sulphonic acid as polyelectrolytes. The fabricated membranes were characterized to ensure the integration of the photocatalysts. The performance of the membranes for water treatment was assessed by selecting some common dyes as model pollutants. The modified membranes exhibited excellent flux recovery and could afford high rejection rates upon irradiation indicating the prospects for sustainable filtration.
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Affiliation(s)
- Merin Joseph
- Department of Applied Chemistry, Cochin University of Science and Technology, Kochi, Kerala, India
| | - Fredin Paulson
- Department of Applied Chemistry, Cochin University of Science and Technology, Kochi, Kerala, India
| | - Nasrin C
- Department of Applied Chemistry, Cochin University of Science and Technology, Kochi, Kerala, India
| | - Aparna S
- School of Environmental Studies, Cochin University of Science and Technology, Kochi, Kerala, India
| | - Sebastian Nybin Remello
- Department of Applied Chemistry, Cochin University of Science and Technology, Kochi, Kerala, India; Inter University Centre for Nanomaterials and Devices, Cochin University of Science and Technology, Kochi, Kerala, India
| | - Suja Haridas
- Department of Applied Chemistry, Cochin University of Science and Technology, Kochi, Kerala, India; Inter University Centre for Nanomaterials and Devices, Cochin University of Science and Technology, Kochi, Kerala, India.
| | - Usha K Aravind
- School of Environmental Studies, Cochin University of Science and Technology, Kochi, Kerala, India.
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7
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Ameen F, Alown F, Dawoud T, Sharaf A, Sakayanathan P, Alyahya S. Versatility of copper-iron bimetallic nanoparticles fabricated using Hibiscus rosa-sinensis flower phytochemicals: various enzymes inhibition, antibiofilm effect, chromium reduction and dyes removal. Environ Geochem Health 2024; 46:142. [PMID: 38507144 DOI: 10.1007/s10653-024-01918-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 02/15/2024] [Indexed: 03/22/2024]
Abstract
Bimetallic nanoparticles (NPs) are considered superior in terms of stability and function with respect to its monometallic counterparts. Hence, in the present study Hibiscus rosa-sinensis flower extract was used to synthesis copper-iron bimetallic nanoparticles (HF-FCNPs). HF-FCNPs was characterized and its applications (biological and environmental) were determined. HF-FCNPs were spherical in shape with high percentage of copper inducted into the NPs. HF-FCNPs inhibited mammalian glucosidases [maltase (IC50: 548.71 ± 61.01 µg/mL), sucrase (IC50: 441.34 ± 36.03 µg/mL), isomaltase (IC50: 466.37 ± 27.09 µg/mL) and glucoamylase (IC50: 403.12 ± 14.03 µg/mL)], alpha-amylase (IC50: 16.27 ± 1.73 µg/mL) and acetylcholinesterase [AChE (IC50: 0.032 ± 0.004 µg/mL)] activities. HF-FCNPs showed competitive inhibition against AChE, maltase and sucrase activities; mixed inhibition against isomaltase and glucoamylase activities; whereas non-competitive inhibition against α-amylase activity. HF-FCNPs showed zone of inhibition of 16 ± 2 mm against S. mutans at 100 µg/mL concentration. HF-FCNPs inhibited biofilm formation of dental pathogen, S. mutans. SEM and confocal microscopy analysis revealed the disruption of network formation and bacterial cell death induced by HF-FCNPs treatment on tooth model of S. mutans biofilm. HF-FCNPs efficiently removed hexavalent chromium in pH-independent manner and followed first order kinetics. Through Langmuir isotherm fit the qmax (maximum adsorption capacity) was determined to be 62.5 mg/g. Further, HF-FCNPs removed both anionic and cationic dyes. Altogether, facile synthesis of HF-FCNPs was accomplished and its biological (enzyme inhibition and antibiofilm activity) and environmental (catalyst to remove pollutants) applications have been understood.
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Affiliation(s)
- Fuad Ameen
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Fadaa Alown
- Science Department, Faculty of Basic Education, Public Authority for Applied Education and Training (Paaet), Kuwait City, Kuwait
| | - Turki Dawoud
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abeer Sharaf
- Jeddah Second Health Cluster- King Fahad General Hospital, Laboratory and Blood Bank Department-NAT Lab, Jeddah, Saudi Arabia
| | | | - Sami Alyahya
- Wellness and Preventive Medicine Institute, King Abdulaziz City for Science and Technology, P.O. Box 6086, 11442, Riyadh, Saudi Arabia
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8
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Kim CM, Jaffari ZH, Abbas A, Chowdhury MF, Cho KH. Machine learning analysis to interpret the effect of the photocatalytic reaction rate constant (k) of semiconductor-based photocatalysts on dye removal. J Hazard Mater 2024; 465:132995. [PMID: 38039815 DOI: 10.1016/j.jhazmat.2023.132995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 11/02/2023] [Accepted: 11/10/2023] [Indexed: 12/03/2023]
Abstract
Photocatalytic reactions with semiconductor-based photocatalysts have been investigated extensively for application to wastewater treatment, especially dye degradation, yet the interactions between different process parameters have rarely been reported due to their complicated reaction mechanisms. Hence, this study aims to discern the impact of each factor, and each interaction between multiple factors on reaction rate constant (k) using a decision tree model. The dyes selected as target pollutants were indigo and malachite green, and 5 different semiconductor-based photocatalysts with 17 different compositions were tested, which generated 34 input features and 1527 data points. The Boruta Shapley Additive exPlanations (SHAP) feature selection for the 34 inputs found that 11 inputs were significantly important. The decision tree model exhibited for 11 input features with an R2 value of 0.94. The SHAP feature importance analysis suggested that photocatalytic experimental conditions, with an importance of 59%, was the most important input category, followed by atomic composition (39%) and physicochemical properties (2%). Additionally, the effects on k of the synergy between the metal cocatalysts and important experimental conditions were confirmed by two feature SHAP dependence plots, regardless of importance order. This work provides insight into the single and multiple factors that affect reaction rate and mechanism.
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Affiliation(s)
- Chang-Min Kim
- Future and Fusion Lab of Architectural, Civil and Environmental Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Zeeshan Haider Jaffari
- Department of Civil and Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Ather Abbas
- Physical Science and Engineering Division, 4700 King Abdullah University of Science and Technology, Thuwal, Mecca Province, Saudi Arabia
| | - Mir Ferdous Chowdhury
- Department of Global Smart City, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Kyung Hwa Cho
- School of Civil, Environmental, and Architectural Engineering, Korea University, Seoul 02841, Republic of Korea.
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Ma D, Wang W, Wang Q, Dai Y, Zhu K, Xu H, Yuan C, Dong P, Xi X. A novel visible-light-driven Z-scheme C 3N 5/BiVO 4 heterostructure with enhanced photocatalytic degradation performance. Environ Sci Pollut Res Int 2024; 31:19687-19698. [PMID: 38366321 DOI: 10.1007/s11356-024-32086-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 01/16/2024] [Indexed: 02/18/2024]
Abstract
As a visible-light response semiconductor materials, bismuth vanadate (BiVO4) is extensively applied in photodegradation organic dye field. In this study, we synthesized C3N5 nanosheets and coupled with decahedral BiVO4 to construct a Z-scheme C3N5/BiVO4 heterostructure with close interface contact. By introducing C3N5 into BiVO4, the built Z-scheme transfer pathway provides silky channel for charge carrier migration between different moieties and enables photoexcited electrons and holes accumulated on the surface of BiVO4 and C3N5. The accelerated separation of charge carriers ensures C3N5/BiVO4 heterostructures with a powerful oxidation capacity compared with pure BiVO4. Due to the synergistic effect in Z-scheme heterostructure, the C3N5/BiVO4 demonstrated an improved photodegradation ability of rhodamine B (RhB) and methylene blue (MB) that of bare BiVO4.
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Affiliation(s)
- Dongqi Ma
- School of Chemistry & Chemical Engineering, Yancheng Institute of Technology, Yancheng, 224051, People's Republic of China
| | - Wuyou Wang
- School of Chemistry & Chemical Engineering, Yancheng Institute of Technology, Yancheng, 224051, People's Republic of China.
| | - Qinzheng Wang
- School of Chemistry & Chemical Engineering, Yancheng Institute of Technology, Yancheng, 224051, People's Republic of China
| | - Yelan Dai
- School of Chemistry & Chemical Engineering, Yancheng Institute of Technology, Yancheng, 224051, People's Republic of China
| | - Kai Zhu
- School of Chemistry & Chemical Engineering, Yancheng Institute of Technology, Yancheng, 224051, People's Republic of China
| | - Haocheng Xu
- School of Chemistry & Chemical Engineering, Yancheng Institute of Technology, Yancheng, 224051, People's Republic of China
| | - Cheng Yuan
- School of Chemistry & Chemical Engineering, Yancheng Institute of Technology, Yancheng, 224051, People's Republic of China
| | - Pengyu Dong
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng, 224051, People's Republic of China
| | - Xinguo Xi
- Key Laboratory for Ecological-Environment Materials of Jiangsu Province, School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, People's Republic of China
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10
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Patel M, Kikani T, Saren U, Thakore S. Bactericidal, anti-biofilm, anti-oxidant potency and catalytic property of silver nanoparticles embedded into functionalised chitosan gel. Int J Biol Macromol 2024; 262:129968. [PMID: 38320641 DOI: 10.1016/j.ijbiomac.2024.129968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 01/20/2024] [Accepted: 02/02/2024] [Indexed: 02/08/2024]
Abstract
Chitosan is a versatile biocompatible polysaccharide which has attracted great attention for gel synthesis. Its reducing character is specifically exploited for nanoparticle synthesis via green approach. A silver nanocomposite synthesized using this gel, with a novel gelling agent 2,4,6-trihydroxy benzaldehyde, was found to be a promising candidate for several applications including anti-bacterial, anti-biofilm and anti-oxidant activity as well as catalysis. The nanocomposite was well characterized using various spectroscopic and microscopic techniques such as IR, TGA, XRD, XPS, SEM and TEM. The nanocomposite exhibited high bactericidal activity against both S. aureus and E. coli. Further, it was evaluated for anti-biofilm forming property and its potency as antioxidant agent. The nanocomposite served as a catalyst for degradation of Methyl Orange and Rhodamine B at high concentrations (in the range of mM) with a catalytic efficiency of 98.58 % and 99.56 % within 3 min and 5 min respectively.
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Affiliation(s)
- Miraj Patel
- Department of Chemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara 390 002, India
| | - Twara Kikani
- Department of Chemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara 390 002, India
| | - Ukil Saren
- Department of Microbiology and Biotechnology Centre, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara 390 002, India
| | - Sonal Thakore
- Department of Chemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara 390 002, India.
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11
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Bhava A, Shenoy US, Bhat DK. Silver doped barium titanate nanoparticles for enhanced visible light photocatalytic degradation of dyes. Environ Pollut 2024; 344:123430. [PMID: 38281571 DOI: 10.1016/j.envpol.2024.123430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 01/01/2024] [Accepted: 01/21/2024] [Indexed: 01/30/2024]
Abstract
Due to the rapid growth of global population, new, fast and reliable methods must be developed to purify contaminated water. Various photocatalysts have been developed to remove organic dyes from water. Herein, Ag doped BaTiO3 has been synthesized using a facile solvothermal method and its excellent photocatalytic activities were demonstrated in degradation of both anionic and cationic dyes under visible light illumination. Ag doped BaTiO3 nanoparticles showed greater efficacy in the degradation of methylene blue (MB) and eosin yellow (EY) than undoped BaTiO3 nanoparticles, which makes them a better candidate for photocatalysis. 1.0 AgBT sample showed the highest photocatalytic activity for MB (99.1 % in 100 min) and EY (99.3 % in 60 min) dye degradation compared with those of other samples. Further, the trapping experiments revealed that hydroxyl radicals and holes are the active species in the photocatalytic process of MB and EY dye degradation and recycle test showed excellent stability of the synthesized material.
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Affiliation(s)
- A Bhava
- Department of Chemistry, National Institute of Technology Karnataka, Surathkal, Mangalore, 575025, India
| | - U Sandhya Shenoy
- Department of Material Science and Engineering, Institute of Engineering and Technology, Srinivas University, Mukka, Mangalore, 574146, India
| | - D Krishna Bhat
- Department of Chemistry, National Institute of Technology Karnataka, Surathkal, Mangalore, 575025, India.
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12
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Noori Z, Malekzadeh A, Poater J. Brownmillerite Calcium Ferrite, a Promising Perovskite-Related Material in the Degradation of a Tight Dye under Ambient Conditions. ChemistryOpen 2024; 13:e202300169. [PMID: 38051941 PMCID: PMC10962484 DOI: 10.1002/open.202300169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/20/2023] [Indexed: 12/07/2023] Open
Abstract
Evaluation of effective and low-cost materials as catalysts to combat the threat of pollution is a significant and growing trend. With this aim, we have synthesized calcium ferrite brownmillerite by wet preparation approach as a catalyst for pollution. The structural analysis is established by the X-ray diffraction of Ca2 Fe2 O5 , whereas the tetrahedral and octahedral sites band stretching for ferrite specimen has been deduced using FTIR. The bandgap energy has been estimated by the Tauc relation (2.17 eV). Ca2 Fe2 O5 brownmillerite exhibits a BET surface area of 10 m2 /g and a BJH pore volume of 0.121 cm3 /g with the average particle size of 70 nm. Importantly, the alizarin Red S dye degradation has been studied using the prepared ferrite catalyst, under dark ambient conditions and without the presence of any acidic or basic additives. Degradation is also supported by both FTIR and TOC analysis. Surface properties of brownmillerite Ca2 Fe2 O5 have been characterized using electronic spectroscopy and CO2 temperature programmed desorption (TPD) analysis and revealed that the basic surface of brownmillerite Ca2 Fe2 O5 offers active sites that are suitable for degradation processes. All results show that the preparation of brownmillerite Ca2 Fe2 O5 via the Pechini method is suitable to produce fine surfaces and pores with nanosized particles.
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Affiliation(s)
- Zahra Noori
- School of ChemistryDamghan UniversityDamghan367126/41167Iran
- Departament de Química Inorgànica i Orgànica & IQTCUBUniversitat de BarcelonaMartí i Franquès 1–1108028BarcelonaSpain
| | - Azim Malekzadeh
- School of ChemistryDamghan UniversityDamghan367126/41167Iran
| | - Jordi Poater
- Departament de Química Inorgànica i Orgànica & IQTCUBUniversitat de BarcelonaMartí i Franquès 1–1108028BarcelonaSpain
- ICREAPasseig Lluís Companys 2308010BarcelonaSpain
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13
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Mehta M, Bhushan I. Potential of biosynthesized titanium dioxide nanoparticles towards wastewater treatment and antimicrobial activity. 3 Biotech 2024; 14:66. [PMID: 38351910 PMCID: PMC10859355 DOI: 10.1007/s13205-024-03915-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 01/03/2024] [Indexed: 02/16/2024] Open
Abstract
This study reports a green, sustainable, reliable, and cost-effective method for the biosynthesis of titanium dioxide nanoparticles (TiO2NPs) using the leaf and stem extracts of Carissa opaca. The newly synthesized biogenic TiO2NPs were confirmed and characterized using various analytical techniques, such as Fourier transform infrared spectroscopy (FTIR), high-resolution transmission electron microscopy (HRTEM), dynamic light scattering (DLS), zeta potential, X-ray diffraction (XRD), inductively coupled plasma analysis (ICP), and scanning electron microscopy (SEM). Both the electron microscopy, i.e., SEM and HRTEM confirmed the spherical/hexagonal crystalline structure of TiO2NPs with an average particle size range from 72.8 to 84.11 nm. These nanoparticles (NPs) exhibited aggregation and possessed a diverse array of functional groups on their surface. Biosynthesized TiO2NPs showed excellent photocatalytic activity against methylene blue (MB) with decolorizing efficiency of 87.8% and 91.95%, whereas in case of methyl violet (MV), the decolorizing efficiency of 82.1% and 71.9% was observed with nanoparticles synthesized using leaf and stem extract, respectively. The newly synthesized NPs have also shown good antibacterial potential against Klebsiella pneumoniae and Staphylococcus aureus. This new biomimetic approach offers an economical and environmentally benign alternative for the removal of hazardous dyes and may find a place for antimicrobial applications.
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Affiliation(s)
- Malvika Mehta
- School of Biotechnology, Shri Mata Vaishno Devi University, Katra, Jammu and Kashmir India
| | - Indu Bhushan
- School of Biotechnology, Shri Mata Vaishno Devi University, Katra, Jammu and Kashmir India
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14
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Chandra A, Ghosh S, Sarkar R, Sarkar S, Chattopadhyay KK. TiO 2 nanorods decorated Si nanowire hierarchical structures for UV light activated photocatalytic application. Chemosphere 2024; 352:141249. [PMID: 38266878 DOI: 10.1016/j.chemosphere.2024.141249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 01/09/2024] [Accepted: 01/16/2024] [Indexed: 01/26/2024]
Abstract
Water remediation techniques like photolysis have recently piqued the interest of many researchers due to water contamination resulting from heavy industrialization and urbanization. In the current work, as-synthesized TiO2 nanorod decorated vertically aligned silicon nanowire (SiNW) leads to a hierarchical morphological structure formation. The photocatalytic nature of the fabricated SiNW/TiO2 nanoheterojunction is examined by the dye degradation of textile pollutants like methylene blue (MB), rhodamine B (RhB), and eosin B (EB). The catalytic dye degradation investigations revealed that 4 h hydrothermal synthesis of TiO2 on the surface of SiNW (ST4) exhibited excellent catalytic behaviour. In the presence of H2O2 and UV irradiation, the ST4 nanoheterostructure can degrade 98.89% of the model pollutant methylene blue (MB) in 15 min, demonstrating remarkable photocatalytic performance. The direct Z-scheme heterojunction exhibited by the SiNW/TiO2 structure facilitates a more efficient charge transfer mechanism with higher reducing and oxidizing ability leading to enhanced photocatalytic behaviour. The degradation pathway examined by LC-MS studies demonstrated the complete breakdown of the organic MB dye molecules ultimately mineralizing into CO2, H2O, and other inorganic substances. The photocatalyst ST4 exhibited excellent reusability and stability after multiple cycles of dye degradation enabling its use in practical water purification purposes.
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Affiliation(s)
- Ankita Chandra
- School of Materials Science and Nanotechnology, Jadavpur University, Kolkata, 700032, India
| | - Shrabani Ghosh
- School of Materials Science and Nanotechnology, Jadavpur University, Kolkata, 700032, India
| | - Ratna Sarkar
- Thin film and Nano Science Laboratory, Department of Physics, Jadavpur University, Kolkata, 700032, India
| | - Sourav Sarkar
- School of Materials Science and Nanotechnology, Jadavpur University, Kolkata, 700032, India
| | - K K Chattopadhyay
- School of Materials Science and Nanotechnology, Jadavpur University, Kolkata, 700032, India; Thin film and Nano Science Laboratory, Department of Physics, Jadavpur University, Kolkata, 700032, India.
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15
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Sarkodie B, Luo L, Mao Z, Farooq A, Feng Q, Xu C, Tawiah B, Hu Y. Highly reusable Bi 2O 3/electron-Cu-shuttle in-situ immobilized polyacrylonitrile fibrous mat for efficient photocatalytic degradation of methylene blue and rhodamine B dyes. J Environ Manage 2024; 354:120346. [PMID: 38387350 DOI: 10.1016/j.jenvman.2024.120346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 01/22/2024] [Accepted: 02/08/2024] [Indexed: 02/24/2024]
Abstract
Organic semiconductor-based photocatalysts have been alluring due to their edge over inorganic photocatalysts. In this study, a reusable copper-bismuth oxide/polyacrylonitrile (Cu-Bi2O3/PAN) fibrous mat was prepared by fast-process flame spray pyrolysis and electrospinning for photocatalytic degradation of methylene blue (MB) and rhodamine B (RhB) dyes. The results confirmed a well-defined morphology of Cu-Bi2O3/PAN fibers and good coordination of flame-made Cu-Bi2O3 particles with the functional groups of PAN. The Cu-Bi2O3/PAN fibrous mat exhibits remarkable photocatalytic performance of 96.2% MB and 98.6% RhB degradation, with a reaction rate as high as about 4.5- and 10.2-times than that of flame-made Cu-Bi2O3 particles and PAN under neutral condition, even after 10 cycles. The Cu-Bi2O3/PAN exhibits complete degradation of MB and RhB in 90 and 150 min under alkaline and slightly acidic conditions, respectively. The synergistic effect of Cu-Bi2O3 and coordination bond between particles and functional groups of PAN promoted carrier migration, suppressed recombination of carriers and provided abundant radicals on the surface of the mat. Superoxide and hydroxyl radicals were the major active species involved in the degradation of RhB and MB, respectively. This work provides an insight into designing the Cu-metal-shuttle based photocatalysts to optimize fibrous mat application in water remediation.
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Affiliation(s)
- Bismark Sarkodie
- College of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui, China; School of Textile and Clothing, Qingdao University, Qingdao, China.
| | - Lingli Luo
- School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Ze Mao
- College of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui, China
| | - Amjad Farooq
- College of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui, China
| | - Quan Feng
- College of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui, China.
| | - Changhai Xu
- School of Textile and Clothing, Qingdao University, Qingdao, China
| | - Benjamin Tawiah
- Department of Industrial Art (Textiles), Kwame Nkrumah University of Science and Technology, Private Mail Bag, Kumasi, Ghana
| | - Yanjie Hu
- School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China.
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16
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Vosough M, Khayati GR, Sharafi S. A novel nanocomposite for photocatalytic rhodamine B dye removal from wastewater using visible light. Environ Res 2024; 249:118415. [PMID: 38316383 DOI: 10.1016/j.envres.2024.118415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/12/2024] [Accepted: 02/02/2024] [Indexed: 02/07/2024]
Abstract
Providing safe access to water and addressing the impact of waterborne diseases, which claim over two million lives annually, is a major contribution to water purification. The study introduces a novel nanocomposite, Ch/Fe3O4/α-MoO3, which exhibits outstanding photocatalytic efficacy under visible light. An in-depth investigation of the nanocomposite's synthesis, characterization, and photodegradation mechanisms reveals its outstanding capabilities. Photocatalytic activity is influenced by the catalytic dose, pH, dye concentration, and reaction time, according to the study. A response surface method is used to determine the optimal conditions for Rhodamine B degradation, which results in 96.3% removal efficiency at pH 8.5, dye concentration 25 mg/L, nanocomposite dose at 22 mg/L, and reaction time 50 min. As a result of its high surface area, biocompatibility, availability, and magnetization with iron compounds, Chitosan is an excellent substrate for enhancing the photocatalytic properties of MoO3 nanoparticles. A nanocomposite with an energy band of 3.18 eV exhibits improved visible light absorption. This study confirms the nanocomposite's recyclability and stability, affirming its practicality. Besides dye removal, it offers hope for the global quest for clean water sources by addressing a broader range of waterborne contaminants. By combining molybdenum and magnetite, nanocomposite materials facilitate the degradation of pollutant and bacteria, contributing positively to society's quest for clean and safe water. It emphasizes the role nanotechnology plays in preserving human health and well-being in combating waterborne diseases.
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Affiliation(s)
- Mahtab Vosough
- Department of Materials Science and Engineering, Shahid Bahonar University of Kerman, P.O. Box No. 76135-133, Kerman, Iran; Young Researchers Society, Shahid Bahonar University of Kerman, P.O. Box No. 76135-133, Kerman, Iran
| | - Gholam Reza Khayati
- Department of Materials Science and Engineering, Shahid Bahonar University of Kerman, P.O. Box No. 76135-133, Kerman, Iran.
| | - Shahriar Sharafi
- Department of Materials Science and Engineering, Shahid Bahonar University of Kerman, P.O. Box No. 76135-133, Kerman, Iran
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17
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Samarasinghe LV, Muthukumaran S, Baskaran K. Recent advances in visible light-activated photocatalysts for degradation of dyes: A comprehensive review. Chemosphere 2024; 349:140818. [PMID: 38056717 DOI: 10.1016/j.chemosphere.2023.140818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 11/23/2023] [Accepted: 11/24/2023] [Indexed: 12/08/2023]
Abstract
The rapid development in industrialization and urbanization coupled with an ever-increasing world population has caused a tremendous increase in contamination of water resources globally. Synthetic dyes have emerged as a major contributor to environmental pollution due to their release in large quantities into the environment, especially owing to their high demand in textile, cosmetics, clothing, food, paper, rubber, printing, and plastic industries. Photocatalytic treatment technology has gained immense research attention for dye contaminated wastewater treatment due to its environment-friendliness, ability to completely degrade dye molecules using light irradiation, high efficiency, and no generation of secondary waste. Photocatalytic technology is evolving rapidly, and the foremost goal is to synthesize highly efficient photocatalysts with solar energy harvesting abilities. The current review provides a comprehensive overview of the most recent advances in highly efficient visible light-activated photocatalysts for dye degradation, including methods of synthesis, strategies for improving photocatalytic activity, regeneration and their performance in real industrial effluent. The influence of various operational parameters on photocatalytic activity are critically evaluated in this article. Finally, this review briefly discusses the current challenges and prospects of visible-light driven photocatalysts. This review serves as a convenient and comprehensive resource for comparing and studying the fundamentals and recent advancements in visible light photocatalysts and will facilitate further research in this direction.
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Affiliation(s)
| | - Shobha Muthukumaran
- Institute for Sustainability Industries and Liveable Cities, College of Sport, Health & Engineering, Victoria University, Melbourne, VIC, 8001, Australia
| | - Kanagaratnam Baskaran
- Faculty of Science, Engineering and Built Environment, Deakin University, Victoria, 3216, Australia
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18
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Adelpour T, Amini M, Shahverdi AR, Mojtabavi S, Faramarzi MA. Enzymatic dual-faced Janus structures based on the hierarchical organic-inorganic hybrid matrix for an effective bioremoval and detoxification of reactive blue-19. Int J Biol Macromol 2024; 257:128493. [PMID: 38043661 DOI: 10.1016/j.ijbiomac.2023.128493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 11/25/2023] [Accepted: 11/27/2023] [Indexed: 12/05/2023]
Abstract
A novel, dual-faced, and hierarchical type of Janus hybrid structures (JHSs) was assembled through an in situ growing of lipase@cobalt phosphate sheets on the laccase@copper phosphate sponge-like structures. The chemical and structural information of prepared JHSs was investigated by Scanning electron microscopy-energy dispersive X-ray analysis (SEM-EDX), Fourier Transform Infrared Spectroscopy (FTIR), and X-ray diffraction analysis (XRD). The catalytic activity, storage stability, and reusability of JHSs were then investigated. The SEM-EDX analysis clearly confirmed the asymmetric morphology of the fabricated JHSs with two distinct metal distributions. Under optimized synthesis conditions, the prepared JHSs showed 97.8 % and 100 % of laccase and lipase activity, respectively. Compared to the free biocatalysts, the immobilization resulted in ~ a 2-fold increase in laccase and lipase stability at temperatures of >40 °C. The fabricated JHSs maintained 61 % and 90 % of their original laccase and lipase activity upon 12 successive repetition cycles. Up to 80 % of Reactive Blue-19 (RB-19), an anthraquinone-based vinyl sulphone dye, was removed after 5 h treatment with the prepared JHSs (50 % higher than the free forms of laccase and lipase). The dye removal data fitted very well on the pseudo-second-order kinetic model with a rate constant of 0.8 g mg-1 h-1. Following the bioremoval process, bacterial toxicity also decreased by about 70 %. Therefore, the prepared JHSs provide a facile and sustainable approach for the decolorization, biotransformation, and detoxification of RB-19 by integrating enzymatic oxidation and hydrolysis.
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Affiliation(s)
- Tina Adelpour
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy & Biotechnology Research Center, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran 1417614411, Iran
| | - Mohsen Amini
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran 1417614411, Iran
| | - Ahmad Reza Shahverdi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy & Biotechnology Research Center, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran 1417614411, Iran
| | - Somayeh Mojtabavi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy & Biotechnology Research Center, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran 1417614411, Iran.
| | - Mohammad Ali Faramarzi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy & Biotechnology Research Center, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran 1417614411, Iran.
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19
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Ahmad A, Khawar MR, Ahmad I, Javed MH, Ahmad A, Rauf A, Younas U, Nazir A, Choi D, Karami AM. Green synthesis of ZnO nanocubes from Ceropegia omissa H. Huber extract for photocatalytic degradation of bisphenol An under visible light to mitigate water pollution. Environ Res 2024; 249:118093. [PMID: 38237759 DOI: 10.1016/j.envres.2023.118093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/26/2023] [Accepted: 12/31/2023] [Indexed: 02/15/2024]
Abstract
Plastic pollution has become a major environmental problem because it does not break down and poses risks to ecosystems and human health. This study focuses on the environmentally friendly synthesis of ZnO nanocubes using an extract from Ceropegia omissa H. Huber plant leaves. The primary goal is to investigate the viability of these nanocubes as visible-light photocatalysts for the degradation of bisphenol A (BPA). The synthesized ZnO nanocubes have a highly crystalline structure and a bandgap of 3.1 eV, making them suitable for effective visible-light photocatalysis. FTIR analysis, which demonstrates that the pertinent functional groups are present, demonstrates the chemical bonding and reducing processes that take place in the plant extract. The XPS method also studies zinc metals, oxygen valencies, and binding energies. Under visible light irradiation, ZnO nanocubes degrade BPA by 86% in 30 min. This plant-extract-based green synthesis method provides a long-term replacement for traditional procedures, and visible light photocatalysis has advantages over ultraviolet light. The study's results show that ZnO nanocubes may be good for the environment and can work well as visible light photocatalysts to break down organic pollutants. This adds to what is known about using nanoparticles to clean up the environment. As a result, this study highlights the potential of using environmentally friendly ZnO nanocubes as a long-lasting and efficient method of reducing organic pollutant contamination in aquatic environments.
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Affiliation(s)
- Awais Ahmad
- Department of Chemistry, The University of Lahore, Lahore, Pakistan.
| | - Muhammad Ramzan Khawar
- Department of Mechanical Engineering (Integrated Engineering Program), Kyung Hee University, 1732, Deogyeong-Daero, Yongin, Gyeonggi, 17104, South Korea
| | - Ikram Ahmad
- Department of Chemistry, University of Sahiwal, Sahiwal, Pakistan
| | - Muhammad Hassan Javed
- Sustainable Development Study Centre, Government College University, Lahore, 54000, Pakistan
| | - Anees Ahmad
- Sustainable Development Study Centre, Government College University, Lahore, 54000, Pakistan
| | - Abdul Rauf
- Sustainable Development Study Centre, Government College University, Lahore, 54000, Pakistan
| | - Umer Younas
- Department of Chemistry, The University of Lahore, Lahore, Pakistan.
| | - Arif Nazir
- Department of Chemistry, The University of Lahore, Lahore, Pakistan.
| | - Dongwhi Choi
- Department of Mechanical Engineering (Integrated Engineering Program), Kyung Hee University, 1732, Deogyeong-Daero, Yongin, Gyeonggi, 17104, South Korea.
| | - Abdulnasser M Karami
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
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20
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Mareka M, Matoetoe M, Tsolekile N. One-pot synthesis optimization of thiol-capped SnS and SnS/ZnS QDs for photocatalytic degradation of Rhodamine 6G. Heliyon 2024; 10:e24191. [PMID: 38234901 PMCID: PMC10792565 DOI: 10.1016/j.heliyon.2024.e24191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 12/29/2023] [Accepted: 01/04/2024] [Indexed: 01/19/2024] Open
Abstract
Interest in SnS-based quantum dots (QDs) has increased due to their low toxicity, widespread natural availability, and superior electro-optical characteristics suitable for photodegradation applications. Herein, we report the synthesis of SnS-based QDs using thiourea and tin (II)chloride as salt precursors. The study explored the impact of various synthetic parameters such as pH, capping ligand, Sn:S ratio, reaction solvent, and ZnS shell on the optical characteristics of the synthesized QDs. The optimal QDs properties were observed at pH = 3 and Sn:S ratio = 1:1. Transmission electron microscopy analysis showed spherical nanoparticles, while the Fourier Transform Infrared spectroscopy revealed QDs with thiol capping. Time-dependent studies revealed that when the QDs were synthesized using propylene glycol, the ultraviolet-visibile (UV-vis) spectrum exhibited an increase in absorbance over time and improved stability compared to aqueous synthesized QDs. SnS/ZnS QDs capped with 3-mercaptopropanoic acid exhibited improved photoluminscence (PL) emissions, stability, and aqueous dispersion compared to glutathione and l-Cysteine as thiol-capping agents. The photocatalytic activity of SnS/ZnS QDs was assessed against Rhodamine 6G and increased to 65 % when passivated with ZnS compared to 31 % for the core SnS QDs. With the given findings, this study supports the stability and effectiveness of the SnS/ZnS QDs as a viable dye degradant.
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Affiliation(s)
- Madillo Mareka
- Chemistry Department, Cape Peninsula University of Technology, PO Box 1906, Bellville, 7535, South Africa
| | - Mangaka Matoetoe
- Chemistry Department, Cape Peninsula University of Technology, PO Box 1906, Bellville, 7535, South Africa
| | - Ncediwe Tsolekile
- Chemistry Department, Cape Peninsula University of Technology, PO Box 1906, Bellville, 7535, South Africa
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21
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Batool I, Imran M, Anwar A, Khan FA, Mohammed AE, Shami A, Iqbal H. Enzyme-triggered approach to reduce water bodies' contamination using peroxidase-immobilized ZnO/SnO 2/alginate nanocomposite. Int J Biol Macromol 2024; 254:127900. [PMID: 37931863 DOI: 10.1016/j.ijbiomac.2023.127900] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 10/30/2023] [Accepted: 11/03/2023] [Indexed: 11/08/2023]
Abstract
Enzyme immobilization on solid support offers advantages over free enzymes by overcoming characteristic limitations. To synthesize new stable and hyperactive nano-biocatalysts (co-precipitation method), ginger peroxidase (GP) was surface immobilized (adsorption) on ZnO/SnO2 and ZnO/SnO2/SA nanocomposite with immobilization efficacy of 94 % and 99 %, respectively. Thereafter, catalytic and biochemical characteristics of free and immobilized GP were investigated by deploying various techniques, i.e., FTIR, PXRD, SEM, and PL. Diffraction peaks emerged at 2θ values of 26°, 33°, 37°, 51°, 31°, 34°, 36°, 56°, indicating the formation of SnO2 and ZnO. The OH stretching of the H2O molecules was attributed to broad peaks between 3200 and 3500 cm-1, whereas ZnO/SnO2 spikes occurred in the 1626-1637 cm-1 range. SnO stretching mode and ZnO terminal vibrational patterns have been verified at corresponding wavelengths of 625 cm-1 and 560 cm-1. Enzyme entrapment onto substrate was verified via interactions between GP and ZnO/SnO2/SA as corroborated by signals beneath 1100 cm-1. GP-immobilized fractions were optimally active at pH 5, 50 °C, and retained maximum activity after storage of 4 weeks at -4 °C. Kinetic parameters were determined by using a Lineweaver-Burk plot and Vmax for free GP, ZnO/SnO2/GP and ZnO/SnO2/SA/GP with guaiacol as a substrate, were found to be 322.58, 49.01 and 11.45 (μM/min) respectively. A decrease in values of Vmax and KM indicates strong adsorption of peroxidase on support and maximum affinity between nano support and enzyme, respectively. For environmental remediation, free ginger peroxidase (GP), ZnO/SnO2/GP and ZnO/SnO2/SA/GP fractions effectively eradicated highly intricate dye. Multiple scavengers had a significant impact on the depletion of the dye. In conclusion, ZnO/SnO2 and ZnO/SnO2/SA nanostructures comprise an ecologically acceptable and intriguing carrier for enzyme immobilization.
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Affiliation(s)
- Iqra Batool
- Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Muhammad Imran
- Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan.
| | - Ayesha Anwar
- Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Farhan Ahmed Khan
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Pakistan
| | - Afrah E Mohammed
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Ashwag Shami
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Hafiz Iqbal
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia.
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22
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Murmu G, Samajdar S, Ghosh S, Shakeela K, Saha S. Tungsten-based Lindqvist and Keggin type polyoxometalates as efficient photocatalysts for degradation of toxic chemical dyes. Chemosphere 2024; 346:140576. [PMID: 38303401 DOI: 10.1016/j.chemosphere.2023.140576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/12/2023] [Accepted: 10/26/2023] [Indexed: 02/03/2024]
Abstract
Photocatalytic dye degradation employing polyoxometalates (POMs) has been a research focus for several years. We report the facile synthesis of tungsten-based Lindqvist and Keggin-type POMs that degrade toxic chemical dyes, methyl orange (MO) and methylene blue (MB), respectively. The Lindqvist POM, sodium hexatungstate, Na2W6O19, degrades MO under 100 W UV light irradiation within 15 min, whereas the Keggin POM, Ag4PW11VO40, degrades MB under 20 W visible light source within 180 min. The effect of various operating parameters, such as photocatalyst concentration, pH, time, and initial dye concentration, were assessed in the degradation of both dyes. The photoelectrochemical performance of the as-synthesized polyoxometalates shows that the Ag4PW11VO40 shows 2.4 times higher photocurrent density than Na2W6O19 at a potential of 0.9 V vs. Ag/AgCl. Electrochemical impedance analysis reveals that Ag4PW11VO40 exhibits much lower charge transfer resistance as compared to Na2W6O19, which indicates facile charge transfer at the electrode-electrolyte interface. Further Mott-Schottky measurements reveal that both the catalysts possess n-type semiconductivity and the charge carrier concentration of Ag4PW11VO40 (5.89 × 1019 cm-3) is 1.4 times higher as compared to Na2W6O19 (4.25 × 1019 cm-3). This work offers a new paradigm for designing polyoxometalates suitable for efficient photocatalytic degradation of organic dyes.
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Affiliation(s)
- Gajiram Murmu
- Materials Chemistry Department, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar, Odisha 751013, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Soumita Samajdar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India; Energy Materials & Devices Division, CSIR - Central Glass and Ceramic Research Institute, Kolkata, 700032, India
| | - Srabanti Ghosh
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India; Energy Materials & Devices Division, CSIR - Central Glass and Ceramic Research Institute, Kolkata, 700032, India
| | - K Shakeela
- B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, Tamil Nadu, 600048, India.
| | - Sumit Saha
- Materials Chemistry Department, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar, Odisha 751013, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India.
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23
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Tripti T, Singh P, Rani N, Kumar S, Kumar K, Kumar P. Carbon dots as potential candidate for photocatalytic treatment of dye wastewater. Environ Sci Pollut Res Int 2024; 31:6738-6765. [PMID: 38157163 DOI: 10.1007/s11356-023-31437-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 12/05/2023] [Indexed: 01/03/2024]
Abstract
Water is the utmost important element for the existence of life. In recent decades, water resources have become highly contaminated by a variety of pollutants, especially toxic dyes that are harmful to both living beings and environment. Hence, there is an urgent need to develop more effective methods than traditional wastewater treatment approaches for treatment of hazardous dyes. Herein, we have addressed the various aspects related to the effective and economically feasible method for photocatalytic degradation of these dyes employing carbon dots. The photocatalysts based on carbon dots including those mediated from biomass have many superiorities over conventional methods such as utilization of economically affordable, non-toxic, rapid reactions, and simple post-processing steps. The current study will also facilitate better insight into the understanding of photocatalytic treatment of dye-polluted wastewater for future wastewater treatment studies. Additionally, the possible mechanistic pathways of photocatalytic dye decontamination, several challenges, and future perspectives have also been summarized.
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Affiliation(s)
- Tripti Tripti
- J. C, Bose University of Science & Technology, YMCA, Faridabad, 121006, Haryana, India
| | - Permender Singh
- Deenbandhu Chhotu Ram University of Science & Technology, Murthal, Sonepat, 131039, Haryana, India
| | - Neeru Rani
- Deenbandhu Chhotu Ram University of Science & Technology, Murthal, Sonepat, 131039, Haryana, India
| | - Sandeep Kumar
- J. C, Bose University of Science & Technology, YMCA, Faridabad, 121006, Haryana, India
| | - Krishan Kumar
- Deenbandhu Chhotu Ram University of Science & Technology, Murthal, Sonepat, 131039, Haryana, India
| | - Parmod Kumar
- J. C, Bose University of Science & Technology, YMCA, Faridabad, 121006, Haryana, India.
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24
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Vijayaram S, Razafindralambo H, Sun YZ, Vasantharaj S, Ghafarifarsani H, Hoseinifar SH, Raeeszadeh M. Applications of Green Synthesized Metal Nanoparticles - a Review. Biol Trace Elem Res 2024; 202:360-386. [PMID: 37046039 PMCID: PMC10097525 DOI: 10.1007/s12011-023-03645-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 03/20/2023] [Indexed: 04/14/2023]
Abstract
Green nanotechnology is an emerging field of science that focuses on the production of nanoparticles by living cells through biological pathways. This topic plays an extremely imperative responsibility in various fields, including pharmaceuticals, nuclear energy, fuel and energy, electronics, and bioengineering. Biological processes by green synthesis tools are more suitable to develop nanoparticles ranging from 1 to 100 nm compared to other related methods, owing to their safety, eco-friendliness, non-toxicity, and cost-effectiveness. In particular, the metal nanoparticles are synthesized by top-down and bottom-up approaches through various techniques like physical, chemical, and biological methods. Their characterization is very vital and the confirmation of nanoparticle traits is done by various instrumentation analyses such as UV-Vis spectrophotometry (UV-Vis), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), atomic force microscopy (AFM), annular dark-field imaging (HAADF), and intracranial pressure (ICP). In this review, we provide especially information on green synthesized metal nanoparticles, which are helpful to improve biomedical and environmental applications. In particular, the methods and conditions of plant-based synthesis, characterization techniques, and applications of green silver, gold, iron, selenium, and copper nanoparticles are overviewed.
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Affiliation(s)
| | - Hary Razafindralambo
- ProBioLab, Teaching and Research Centre, Gembloux Agro-Bio Tech, University of Liege, Liège, Belgium
- BioEcoAgro Joint Research Unit, TERRA Teaching and Research Centre, Microbial Processes and Interactions, Gembloux AgroBio Tech/Université de Liège, Gembloux, Belgium, University of Liege, Liège, Belgium
| | - Yun-Zhang Sun
- Fisheries College, Jimei University, Xiamen, 361021, China.
| | - Seerangaraj Vasantharaj
- Department of Biotechnology, Hindusthan College of Arts and Science, Coimbatore, 641028, Tamil Nadu, India
| | - Hamed Ghafarifarsani
- Department of Fisheries, Faculty of Natural Resources, Urmia University, Urmia, Iran.
| | - Seyed Hossein Hoseinifar
- Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Mahdieh Raeeszadeh
- Department of Basic Sciences, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran
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25
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Siddique AB, Amr D, Abbas A, Zohra L, Irfan MI, Alhoshani A, Ashraf S, Amin HMA. Synthesis of hydroxyethylcellulose phthalate-modified silver nanoparticles and their multifunctional applications as an efficient antibacterial, photocatalytic and mercury-selective sensing agent. Int J Biol Macromol 2024; 256:128009. [PMID: 37995781 DOI: 10.1016/j.ijbiomac.2023.128009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/20/2023] [Accepted: 11/08/2023] [Indexed: 11/25/2023]
Abstract
Water contamination by several aquatic pollutants such as dyes, heavy metal ions and microbes is a prevalent concern to health and environment. Thus, developing facile, economical, and eco-friendly strategies to tackle this problem have become paramount. Hence, this study reports the synthesis of hydroxyethylcellulose phthalate-capped silver nanoparticles (HEC-PA@AgNPs) using a simple sunlight-assisted route. The multifunctional applications of the synthesized particles as an efficient nanoprobe for the selective sensing of Hg2+ as well as their photocatalytic and antimicrobial activities were demonstrated. HEC-PA@AgNPs were systematically characterized by various advanced analytical techniques such as FTIR, UV-Vis spectroscopy, X-ray diffraction (XRD), zeta potential (ZP) and dynamic light scattering (DLS). The successful functionalization of AgNPs with HEC-PA was manifested using FTIR. SEM and XRD revealed the formation of spherical AgNPs with a face centered cubic structure and a crystallite size of 14 nm. The particles demonstrated a hydrodynamic size of 40 nm with a good colloidal stability as evidenced from the ZP value of -35 mV, suggesting the effective role of the negatively charged HEC-PA capping agent in stabilizing the NPs. HEC-PA@AgNPs exhibited fast naked-eye colorimetric detection, high selectivity, and sensitivity to Hg2+ in spiked real water samples over a wide range of pH (3-9) and temperatures (298-328 K), achieving a detection limit of 119 nM. The presence of other diverse metal ions didn't affect the specificity of the particles toward Hg ions. Further, the sensing mechanism is based on a characteristic redox reaction between Hg2+ and AgNPs. Further, HEC-PA@AgNPs showcased a more noxious antimicrobial activity to gram-positive bacteria (B. subtilis and S. aureus) than gram-negative bacteria (E. coli). Besides, AgNPs exhibited high photocatalytic potential under sunlight irradiation with a degradation efficiency of 79 % for methylene blue dye in only 80 min following pseudo-1st order kinetics with a rate constant of 0.019 min-1. The photocatalyst exhibited good reusability after five recycling runs. These results render our approach promising multifunctional analytical probe for environmental and biomedical applications.
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Affiliation(s)
- Abu Bakar Siddique
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan
| | - Dina Amr
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Azhar Abbas
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan; Department of Chemistry, Government Ambala Muslim College, Sargodha 40100, Pakistan.
| | - Lubna Zohra
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan
| | - Muhammad I Irfan
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan
| | - Ali Alhoshani
- Department of Pharmacology & Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Saima Ashraf
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, Zhengzhou 450001, PR China
| | - Hatem M A Amin
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt.
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26
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Palem RR, Bathula C, Shimoga G, Lee SH, Ghfar AA, Sekar S, Kim HS, Seo YS, Rabani I. Fabrication of Ru loaded MgB 2 with guar gum hybrid for photocatalytic degradation of crystal violet. Int J Biol Macromol 2023; 253:126948. [PMID: 37722634 DOI: 10.1016/j.ijbiomac.2023.126948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 09/04/2023] [Accepted: 09/08/2023] [Indexed: 09/20/2023]
Abstract
Today, dyes/pigment-based materials are confronting a serious issue in harming marine ecology. Annihilate these serious water pollutants using photoactive 2D nanohybrid catalysts showed promising comparativeness over available photocatalysts. In the present work, a facile route to decorate Ruthenium (Ru) on 2D MgB2 flower-like nanostructures was developed via ecofriendly guar gum biopolymer substantial template (MgB2/GG@Ru NFS) and its photocatalytic performance was reported. Synthesis of MgB2@Ru, MgB2/GG@Ru NFS and commercial MgB2, was studied by FTIR, XRD, FE-SEM, EDX, AFM, TEM, UV-vis spectra, and XPS analysis. From the results, the MgB2/GG@Ru NFS exhibited a superior photocatalytic performance (99.7 %) than its precursors MgB2@Ru (79.7 %), and MgB2 (53.7 %), with the degradation efficiency of the crystal violet (CV) within 100 min under visible light irradiation. The proposed photo-catalyst MgB2/GG@Ru NFS showed negligible loss of photocatalytic activity even after five successive cycles, revealing its reusability and enhanced stability due to the network structure. The photocatalytic mechanism for MgB2/GG@Ru NFS was evaluated by trapping experiment of active species, verifying that superoxide (O2-) and electron (e-) contributed significant role in the dye degradation.
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Affiliation(s)
- Ramasubba Reddy Palem
- Department of Medical Biotechnology, Dongguk University, 32 Dongguk-ro, Ilsandong-gu, Goyang, Gyeonggi 10326, Republic of Korea
| | - Chinna Bathula
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Ganesh Shimoga
- Department of Biotechnology and Nanomedicine, SINTEF Industry, 7034 Trondheim, Norway; Interaction Lab, Future Convergence Engineering, Advanced Technology Research Centre, Korea University of Technology and Education, Cheonan-si 31253, Chungcheongnam-do, Republic of Korea
| | - Soo-Hong Lee
- Department of Medical Biotechnology, Dongguk University, 32 Dongguk-ro, Ilsandong-gu, Goyang, Gyeonggi 10326, Republic of Korea
| | - Ayman A Ghfar
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Sankar Sekar
- Quantum-functional Semiconductor Research Center, Dongguk University-Seoul, Seoul 04620, Republic of Korea; Division of Physics and Semiconductor Science, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Hyun-Seok Kim
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Young-Soo Seo
- Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea
| | - Iqra Rabani
- Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea.
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27
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Bagheri O, Esmkhani M, Javanshir S, Aghabarari B. Preparation of agar functionalized graphene oxide-immobilized copper ferrite aerogel for dye degradation via dark-Fenton oxidative process. Int J Biol Macromol 2023; 253:127432. [PMID: 37838123 DOI: 10.1016/j.ijbiomac.2023.127432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/07/2023] [Accepted: 10/11/2023] [Indexed: 10/16/2023]
Abstract
Dye and textile industries are one of the main causes of water pollution and put the environment and health of society at risk. Developing new materials to decontaminate industrial waste effluents containing dyes as pollutants is challenging due to numerous issues, including tailoring recyclable and biodegradable agents. This study focuses on applying an advanced oxidation process, electro-Fenton for the treatment of dye-containing wastewater using agar-functionalized graphene oxide-immobilized copper ferrite aerogel. The objective is therefore to determine the optimal conditions for the degradation of model pollutants methylene blue (MB). MB was oxidized and degraded through the dark-Fenton process using Agar@GO-CuFe2O4 as a new biobased catalyst. The effect of the operating parameters was then evaluated to determine the optimal conditions. The degradation process was screened for different initial concentrations of dye solution between 10 and 150 mg/l, a volume range of H2O2 between 0.5 and 2.5 ml, and different pH from 2 to 7. The results show that 99.89 % of the MB with the initial concentration of 150 ppm was degraded by 20 mg of the catalyst and 2 ml of H2O2 (30 % W/W) at 40 °C and pH = 6. Pseudo-second-order kinetics satisfactorily describes the experimental data. SYNOPSIS: The prepared catalyst can be applied to oxidize industrial effluents before they are released into the environment.
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Affiliation(s)
- Omran Bagheri
- Pharmaceutical and Heterocyclic Compounds Research Laboratory, Chemistry Department, Iran University of Science and Technology, Tehran, Iran
| | - Maryam Esmkhani
- Pharmaceutical and Heterocyclic Compounds Research Laboratory, Chemistry Department, Iran University of Science and Technology, Tehran, Iran
| | - Shahrzad Javanshir
- Pharmaceutical and Heterocyclic Compounds Research Laboratory, Chemistry Department, Iran University of Science and Technology, Tehran, Iran.
| | - Behzad Aghabarari
- Nanotechnology and Advanced Materials Department, Materials and Energy Research Center, Karaj 31787-316, Iran
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28
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Chankhunthod N, Junploy P, Suthirakun S, Ngamwongwan L, Phromma C, Ruchusartsawat N, Siyasukh A, Yanu P, Kijjanapanich P, Yimklan S, Rujiwatra A, Drummond-Brydson R, Chimupala Y. Ecofriendly alkali metal cations diffusion improves fabrication of mixed-phase titania polymorphs on fixed substrate by chemical vapor deposition (CVD) for photocatalytic degradation of azo dye. Environ Res 2023; 239:117347. [PMID: 37821062 DOI: 10.1016/j.envres.2023.117347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 09/12/2023] [Accepted: 10/07/2023] [Indexed: 10/13/2023]
Abstract
Controlling the nanoscale synthesis of semiconductor TiO2 on a fixed substrate has fascinated the curiosity of academics for decades. Synthesis development is required to give an easy-to-control technique and parameters for TiO2 manufacture, leading to advancements in prospective applications such as photocatalysts. This study, mixed-phase TiO2(B)/other titania thin films were synthesized on a fused quartz substrate utilizing a modified Chemical vapor depodition involving alkali-metal ions (Li+, Na+, and K+) solution pre-treatment. It was discovered that different cations promote dramatically varied phases and compositions of thin films. The films had a columnar structure with agglomerated irregular-shaped particles with a mean thickness of 800-2000 nm. Na+ ions can promote TiO2(B) more effectively than K+ ions, however Li+ ions cannot synthesize TiO2(B). The amounts of TiO2(B) in thin films increase with increasing alkali metal (K+ and Na+) concentration. According to experimental and DFT calculations, the hypothesized TiO2(B) production mechanism happened via the meta-stable intermediate alkaline titanate transformation caused by alkali-metal ion diffusion. The mixed phase of TiO2(B) and anatase TiO2 on the fixed substrate (1 × 1 cm2) obtained from Na+ pre-treated procedures showed significant photocatalytic activity for the degradation of methylene blue. K2Ti6O12, Li2TiO3, Rutile TiO2, and Brookite TiO2 phase formations produced by K+ and Li + pretreatment are low activity photocatalysts. Photocatalytic activities were more prevalent in NaOH pre-treated samples (59.1% dye degradation) than in LiOH and KOH pre-treated samples (49.6% and 34.2%, respectively). This revealed that our developed CVD might generate good photocatalytic thin films of mixed-phase TiO2(B)/anatase TiO2 on any substrate, accelerating progress in future applications.
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Affiliation(s)
- Navadecho Chankhunthod
- Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand; Institute of Nanomaterials Research and Innovation for Energy (IN-RIE), NANOTECH-KKU RNNon Nanomaterials Research and Innovation for Energy, Khon Kaen University, 40002, Thailand
| | - Patcharanan Junploy
- Department of Chemistry, Faculty of Science and Technology, Chiang Mai Rajabhat University, Chiang Mai, Thailand
| | - Suwit Suthirakun
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Lappawat Ngamwongwan
- School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Chitsanupong Phromma
- Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Nantawat Ruchusartsawat
- Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Adisak Siyasukh
- Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Pattama Yanu
- Chiang Mai University Demonstration School, Faculty of Education, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Pimluck Kijjanapanich
- Department of Environmental Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Saranphong Yimklan
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Apinpus Rujiwatra
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Rik Drummond-Brydson
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom.
| | - Yothin Chimupala
- Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai, 50200, Thailand.
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29
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Rohilla P, Chhikara A, Dahiya P. Biogenic synthesis of AuNPs using Solanum virginianum L. and their antibacterial, antioxidant and catalytic applications. Indian J Microbiol 2023; 63:562-574. [PMID: 38031596 PMCID: PMC10682358 DOI: 10.1007/s12088-023-01114-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 10/11/2023] [Indexed: 12/01/2023] Open
Abstract
Biogenic synthesis of nanoparticles is gaining popularity worldwide because of being ecofriendly as well as economical, with minimal production of hazardous by-products. The present study was targeted to determine the antibacterial, free radical scavenging and catalytic activity of gold nanoparticles synthesized from Solanum virginianum L. (Sv-AuNPs). After addition of auric chloride, the color of aqueous plant extract changed from light yellow to purple-red, indicating the formation of nanoparticles. A strong peak at 536 nm affirmed synthesis of Sv-AuNPs, and negative zeta potential (- 30.7) indicated their being wrapped in anions. They exhibited face-centered cubic and crystalline nature as revealed by X-ray diffraction. Elemental composition of Sv-AuNPs was ascertained by energy-dispersive X-ray spectroscopy, and a sharp peak at 2.2 keV confirmed the presence of gold. The shape of Sv-AuNPs synthesized was spherical with size ranging from 29.1 ± 1 nm to 51.2 ± 0.7 nm. Antibacterial potential was evaluated against E. coli, C. violaceum, K. pneumoniae, P. aeruginosa, B. subtilis, M. smegmatis, and S. aureus and was found to be greater than aqueous plant extract. Sv-AuNPs exhibited antioxidant potential comparable to ascorbic acid, demonstrating their vital role in the prevention of reactive oxygen species related diseases. Apart from their pharmaceutical potential, these nanoparticles also exhibited promising catalytic efficacy. They degraded harmful dyes i.e. 4-nitro phenol (4-NP) and congo red (CR) at a very low concentration of 50 µg/ml. This is the first report on the antibacterial, antioxidant, and catalytic properties of Sv-AuNPs and we hope it will lead the way for nanoparticles multifunctionality. Graphical abstract
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Affiliation(s)
- Preety Rohilla
- Department of Botany, Maharshi Dayanand University, Rohtak, Haryana 124001 India
| | - Ashmita Chhikara
- Department of Botany, Maharshi Dayanand University, Rohtak, Haryana 124001 India
| | - Pushpa Dahiya
- Department of Botany, Maharshi Dayanand University, Rohtak, Haryana 124001 India
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30
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Shanmugaraj K, Campos CH, Mangalaraja RV, Nandhini K, Aepuru R, Torres CC, Singh DP, Kumar D, Ilanchelian M, Sharma A, Vo DVN. Gold nanoparticle-decorated earth-abundant clay nanotubes as catalyst for the degradation of phenothiazine dyes and reduction of 4-(4-nitrophenyl)morpholine. Environ Sci Pollut Res Int 2023; 30:124447-124458. [PMID: 35294686 DOI: 10.1007/s11356-022-19523-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 02/25/2022] [Indexed: 06/14/2023]
Abstract
In the present work, halloysite nanotubes modified with gold nanoparticles (AuNPs-HNT) are successfully prepared by wet chemical method for the catalytic degradation of phenothiazine dyes (azure B (AZB) and toluidine blue O (TBO)) and also cleaner reduction of 4-(4-nitrophenyl)morpholine (4NM) in the sodium borohydride (NaBH4) media. The catalyst is formulated by modifying the HNT support with a 0.964% metal loading using the HNT supports modified with 3-aminopropyl-trimethoxysilane (APTMS) coupling agent to facilitate the anchoring sites to trap the AuNPs and to prevent their agglomeration/aggregation. The AuNPs-HNT catalyst is investigated for structural and morphological characterization to get insights about the formation of the catalyst for the effective catalytic reduction of dyes and 4NM. The microscopic studies demonstrate that AuNPs (2.75 nm) are decorated on the outer surface of HNT. The as-prepared AuNPs-HNT catalyst demonstrates AZB and TBO dye degradation efficiency up to 96% in 10 and 11 min, respectively, and catalytic reduction of 4NM to 4-morpholinoaniline (MAN) is achieved up to 97% in 11 min, in the presence of NaBH4 without the formation of any by-products. The pseudo-first-order rate constant (K1) value of the AuNPs-HNT catalyst for AZB, TBO, and 4NM were calculated to be 0.0078, 0.0055, and 0.0066 s-1, respectively. Moreover, the synthesized catalyst shows an excellent reusability with stable catalytic reduction for 7 successive cycles for both the dyes and 4NM. A plausible mechanism for the catalytic dye degradation and reduction of 4NM by AuNPs-HNT catalyst is proposed as well. The obtained results clearly indicate the potential of AuNPs-HNT as an efficient catalyst for the removal of dye contaminants from the aquatic environments and cleaner reduction of 4NM to MAN, insinuating future pharmaceutical applications.
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Affiliation(s)
- Krishnamoorthy Shanmugaraj
- Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, Universidad de Concepción, Concepción, Chile.
| | - Cristian H Campos
- Departamento de Físico-Química, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Casilla 160-C, Concepción, Chile
| | - Ramalinga Viswanathan Mangalaraja
- Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, Universidad de Concepción, Concepción, Chile
- Technological Development Unit (UDT), University of Concepcion, Coronel Industrial Park, Coronel, Chile
| | - Karuppasamy Nandhini
- Department of Chemistry, Bharathiar University, Coimbatore, Tamil Nadu, 641 046, India
| | - Radhamanohar Aepuru
- Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad Tecnológica Metropolitana, Santiago, Chile
| | - Cecilia C Torres
- Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andres Bello, Autopista Concepción-Talcahuano, 7100, Sede Concepción, Talcahuano, Chile
| | - Dinesh Pratap Singh
- Physics Department and Millennium Institute for Research in Optics (MIRO- ANID), Faculty of Science, University of Santiago of Chile (USACH), Av. Ecuador 3493, 9170124, Estación Central, Santiago, Chile
| | - Deepak Kumar
- School of Chemical Engineering and Physical Science, Lovely Professional University, Phagwara, Punjab, 144411, India
| | | | - Ajit Sharma
- School of Chemical Engineering and Physical Science, Lovely Professional University, Phagwara, Punjab, 144411, India
| | - Dai-Viet N Vo
- Institute of Environmental Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, 755414, Vietnam
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Dutta V, Sonu S, Raizada P, Thakur VK, Ahamad T, Thakur S, Kumar Verma P, Quang HHP, Nguyen VH, Singh P. Prism-like integrated Bi 2WO 6 with Ag-CuBi 2O 4 on carbon nanotubes (CNTs) as an efficient and robust S-scheme interfacial charge transfer photocatalyst for the removal of organic pollutants from wastewater. Environ Sci Pollut Res Int 2023; 30:124530-124545. [PMID: 35554840 DOI: 10.1007/s11356-022-20743-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 05/06/2022] [Indexed: 06/15/2023]
Abstract
Photocatalytic hybrid carbon nanotubes (CNTs)-mediated Ag-CuBi2O4/Bi2WO6 photocatalyst was fabricated using a hydrothermal technique to effectively eliminate organic pollutants from wastewater. The as-prepared samples were characterized via Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction patterns (XRD), high-resolution transmission electron microscope (HR-TEM), UV-vis Diffuse Reflectance spectrum (UV-Vis DRS), and photoluminescence (PL) studies. The photocatalytic performance of fabricated pristine and hybrid composites was examined by photo-degradation of toxic dye viz. Rhodamine B (RhB) under visible light. Photo-degradation results revealed that the fabricated Ag-CuBi2O4/CNTs/Bi2WO6 semiconductor photocatalyst followed pseudo-first-order kinetics and displayed a higher photocatalytic rate, which was found to be approximately 3.33 and 2.35 times higher than the pristine CuBi2O4 and Bi2WO6 semiconductor photocatalyst, respectively. Re-cyclic results demonstrated that the formed composite owns excellent stability, even after five consecutive cycles. As per the matched Fermi level of CNTs in between Ag-CuBi2O4 and Bi2WO6, carbon nanotubes severed as electron transfer-bridge, Ag doping on CuBi2O4 surface successfully increased photon absorption all across CuBi2O4 surface. Also, it hindered the assimilation of photoinduced electron-hole pairs. The increased photocatalytic efficiency is contributed to the uniform dispersion of photo-generated electron-hole pairs via the construction of an S-scheme system. ROS trapping and ESR experiments suggested that (∙OH) and (O2-∙) were the main radical species for enhanced photo-degradation of RhB dye. The current investigation, from our perspective, highlights the new insights for the fabrication of practical CNTs-mediated S-scheme-based semiconductor photocatalyst for the resolution of environmental issues based on practical considerations.
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Affiliation(s)
- Vishal Dutta
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India
| | - Sonu Sonu
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India
| | - Pankaj Raizada
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India
| | - Vijay Kumar Thakur
- Bio-Refining and Advanced Materials Research Centre, Scotland's Rural College (SRUC), Edinburgh, UK
| | - Tansir Ahamad
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Sourbh Thakur
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100, Gliwice, Poland
| | - Praveen Kumar Verma
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India
| | - Huy Hoang Phan Quang
- Faculty of Biology and Environment, Tan Phu District, Ho Chi Minh City University of Food Industry, 140 Le Trong Tan Street, Tay Thanh Ward, Ho Chi Minh City, Vietnam
| | - Van-Huy Nguyen
- Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education (CARE), Kelambakkam, Kanchipuram District, 603103, Tamil Nadu, India
| | - Pardeep Singh
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India.
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Cao M, Shao S, Ji W, Fan X. Enhanced plasmonic photocatalytic performance of C doped TiN nanocrystals through ultrathin carbon layers. J Environ Manage 2023; 345:118826. [PMID: 37595459 DOI: 10.1016/j.jenvman.2023.118826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/11/2023] [Accepted: 08/12/2023] [Indexed: 08/20/2023]
Abstract
Carbon-doped TiN nanoparticles on an ultrathin carbon layer, were successfully used for photocatalytic dye degradation synthesised by a simple calcination process. The resulting catalyst exhibited remarkable plasmonic photocatalytic performance under visible light irradiation. In comparison with benchmark rutile TiO2 and g-C3N4/TiO2 heterostructure catalysts, the first-order reaction rate constant of the developed catalyst improved approximately 34.2 and 6.5 times, respectively. The doping concentration of carbon and the crystal size of TiN nanoparticles, predominantly influenced by the amount of urea and calcination temperature, were identified as crucial factors governing the plasmonic photocatalytic activity. Density functional theory (DFT) calculations indicated that the introduction of carbon-sp bands into the TiN band structure promoted interband excitation of electrons and facilitated the generation of hotter holes, thereby enhancing the degradation of dyes and ultimately contributing to the superior photocatalytic activity observed.
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Affiliation(s)
- Mengyu Cao
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., Beijing, 100013, PR China.
| | - Shibo Shao
- Petrochemical Research Institute, PetroChina Company Limited, Beijing, 102206, China.
| | - Wenxi Ji
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., Beijing, 100013, PR China.
| | - Xianfeng Fan
- Institute for Materials and Processes, School of Engineering, The University of Edinburgh, Edinburgh, EH9 3FB, Scotland, UK.
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Özcan S, Süngü Akdoğan ÇZ, Polat M, Kip Ç, Tuncel A. A new multimodal magnetic nanozyme and a reusable peroxymonosulfate oxidation catalyst: Manganese oxide coated-monodisperse-porous and magnetic core-shell microspheres. Chemosphere 2023; 341:140034. [PMID: 37659514 DOI: 10.1016/j.chemosphere.2023.140034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/09/2023] [Accepted: 08/30/2023] [Indexed: 09/04/2023]
Abstract
Monodisperse-porous, polydopamine and manganese oxide coated, core-shell type, magnetic SiO2 (MagSiO2@PDA@MnO2) microspheres 6.4 μm in size were synthesized for the first time, using magnetic, monodisperse-porous SiO2 (MagSiO2) microspheres 6.2 μm in size as the starting material. MagSiO2 microspheres were obtained by a recently developed method namely "staged shape templated hydrolysis and condensation protocol". In the synthesis, MagSiO2 microspheres were consecutively coated by polydopamine (PDA) and then by a MnO2 layer in the aqueous medium. The pore volume and the specific surface area of monodisperse-porous MagSiO2@PDA@MnO2 microspheres were measured as 0.59 cm3 g-1 and 154 m2 g-1, respectively. Their Mn and Fe contents were determined as 66 ± 1 mg g-1 and 165 ± 5 mg g-1 respectively. MagSiO2@PDA@MnO2 microspheres exhibited multimodal enzyme mimetic behavior with highly superior catalase-like, oxidase-like and peroxidase-like activities. The effective production of singlet oxygen (1O2) and superoxide anion (O2-*) radicals in MagSiO2@PDA@MnO2-peroxymonosulfate (PMS) system was demonstrated by ESR spectroscopy. By evaluating this property, MagSiO2@PDA@MnO2 microspheres were tried as a reusable catalyst for dye removal via peroxymonosulfate (PMS) activation in batch experiments for the first time. The degradation runs were made with, rhodamine B (Rh B), methyl orange (MO) and methylene blue (MB) as the pollutant. The core-shell type design allowing the deposition of porous MnO2 layer onto a large surface area provided very fast, instant removals with all dyes, via both physical adsorption and degradation via PMS activation. In the reusability experiments, the removal yields of MO and Rh B decreased 1.8% and 8.9% over five consecutive runs in batch fashion. MagSiO2@PDA@MnO2 microspheres exhibited very good functional and structural stability in consecutive dye degradations. No significant change was observed in Fe content of microspheres while Mn content exhibited a decrease of 7.4% w/w over 5 consecutive degradation runs.
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Affiliation(s)
- Sinem Özcan
- Hacettepe University, Chemical Engineering Department, Ankara, 06800, Turkey
| | | | - Mustafa Polat
- Hacettepe University, Department of Physics Engineering, Ankara, 06800, Turkey
| | - Çiğdem Kip
- Hacettepe University, Chemical Engineering Department, Ankara, 06800, Turkey
| | - Ali Tuncel
- Hacettepe University, Chemical Engineering Department, Ankara, 06800, Turkey; Hacettepe University, Bioengineering Division, Ankara, 06800, Turkey.
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Shanmuganathan R, Sathiyavimal S, Hoang Le Q, M Al-Ansari M, A Al-Humaid L, Jhanani GK, Lee J, Barathi S. Green synthesized Cobalt oxide nanoparticles using Curcuma longa for anti-oxidant, antimicrobial, dye degradation and anti-cancer property. Environ Res 2023; 236:116747. [PMID: 37500035 DOI: 10.1016/j.envres.2023.116747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 07/20/2023] [Accepted: 07/25/2023] [Indexed: 07/29/2023]
Abstract
In the present study, cobalt oxide nanoparticles have been synthesized using the root extract of Curcuma longa in a manner that is both environmentally friendly and economical. Initially, the synthesized nanoparticles were characterized using a UV-Vis spectroscopy analysis, in which plasma resonance at 345 nm was observed, which confirmed that CL-Cobalt oxide nanoparticles were synthesized. While FTIR analysis showed a peak at 597.37 cm-1 indicating Co-O stretching vibration. In addition, DLS, SEM and XRD analyses confirmed the synthesis of polydispersed (average size distribution of 97.5 ± 35.1 nm), cubic phase structure, and spherical-shaped CL-Cobalt oxide nanoparticles. CL-Cobalt oxide nanoparticles synthesized from green materials showed antioxidant and antimicrobial properties. CL-Cobalt oxide nanoparticles exhibited antibacterial activity against Gram negative (Klebsiella pneumoniae and Escherichia coli) and Gram positive bacteria (Bacillus subtilis, Staphylococcus aureus), while CL-Cobalt oxide nanoparticles additionally displayed significant antifungal activity against Aspergillus niger. CL-Cobalt oxide also showed application in a bioremediation perspective by showing strong photocatalytic degradation of methyl red, methyl orange and methyl blue dye. In addition, CL-Cobalt oxide also demonstrated anticancer activity against MDA-MB-468 cancer cell lines with an IC50 value of 150.8 μg/ml. Therefore, this is the first and foremost report on CL-Cobalt oxide nanoparticles synthesized using Curcuma longa showing antioxidant, antibacterial, antifungal, dye degradation and anticancer applications.
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Affiliation(s)
- Rajasree Shanmuganathan
- School of Medicine and Pharmacy, Duy Tan University, Da Nang, Viet Nam; Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam.
| | - Selvam Sathiyavimal
- University Centre for Research & Development, Chandigarh University, Mohali, 140103, India
| | - Quynh Hoang Le
- School of Medicine and Pharmacy, Duy Tan University, Da Nang, Viet Nam; Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam
| | - Mysoon M Al-Ansari
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Latifah A Al-Humaid
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - G K Jhanani
- Center for Global Health Research (CGHR), Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, India.
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea
| | - Selvaraj Barathi
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea.
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Ashraf W, Parvez SH, Khanuja M. Synthesis of highly efficient novel two-step spatial 2D photocatalyst material WS 2/ZnIn 2S 4 for degradation/reduction of various toxic pollutants. Environ Res 2023; 236:116715. [PMID: 37481055 DOI: 10.1016/j.envres.2023.116715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 07/10/2023] [Accepted: 07/19/2023] [Indexed: 07/24/2023]
Abstract
In this article, we report the synthesis, characterization of novel biofriendly 2D/2D heterostructure WS2/ZnIn2S4 material in which 2D WS2 nanosheets are uniformly distributed spatially onto the spherically arranged 2D leaves of ZnIn2S4. We then studied the in-depth photocatalytic degradation activity of this novel nanocomposite and its pristine component materials on cationic dye: malachite green, anionic dye: congo red and reduction of heavy metal: chromium(VI) and the degradation efficiency of composite material was also tested on rhodamine-B, methylene blue, methyl orange dyes and acetaminophen/paracetamol drug. Form factor, structure factor and shape factor analysis has been carried out using X-ray diffractometry (XRD). Bond vibrations, functional groups and phonon vibration mode analysis has been done based on Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy. Morphological and compositional analysis has been done using field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDAX) and X-ray photoelectron spectroscopy (XPS), high-resolution transmission electron microscopy (HR-TEM). Surface area and pore size/distribution was characterized using Brunauer-Emmett-Teller (BET) method and Barrett-Joyner-Halenda Model. Degradation pathways and intermediate products are proposed using the high-performance liquid chromatography (HPLC). Photocatalytic activity of the nanocomposite WS2/ZnIn2S4 is compared with pristine ZnIn2S4 and pristine WS2, which shows more than 50% enhancement in both efficiency and rate of degradation/reduction for all the pollutants. A scavenger study was carried out to get insight of primary and secondary reactive oxygen species (ROS) taking part in degradation. Exciton lifetime, surface charge and stability, and flat band positions were studied based on time-correlated single photon counting (TCSPC) also known as time-resolved photoluminescence (TRPL), zeta potential, and Mott-Schottky respectively. Rate kinetics study was performed to analyze the physical and chemical behaviour of the nanocomposite with pollutants in consideration. Results show ∼100%, ∼90%, and ∼95% degradation efficiency by the heterostructure for malachite green (MG), congo red (CR), and reduction of heavy metal chromium (Cr(VI)) respectively within 5 min, which is a huge improvement as compared to pristine WS2 and pristine ZnIn2S4, both of which show the efficiencies of only ∼25% to∼75% in all the cases.
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Affiliation(s)
- Waseem Ashraf
- Centre for Nanoscience and Nanotechnology, Jamia Millia Islamia, New Delhi, 110025, India.
| | - Syed Hasan Parvez
- Centre for Nanoscience and Nanotechnology, Jamia Millia Islamia, New Delhi, 110025, India
| | - Manika Khanuja
- Centre for Nanoscience and Nanotechnology, Jamia Millia Islamia, New Delhi, 110025, India.
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Chaudhari RK, Shah PA, Shrivastav PS. Green synthesis of silver nanoparticles using Adhatoda vasica leaf extract and its application in photocatalytic degradation of dyes. Discov Nano 2023; 18:135. [PMID: 37903994 PMCID: PMC10616034 DOI: 10.1186/s11671-023-03914-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 10/25/2023] [Indexed: 11/01/2023]
Abstract
The paper describes biogenic synthesis of silver nanoparticles (AgNPs) using Adhatoda vasica leaf extracts at room temperature. The prepared AgNPs were characterized by UV-visible spectroscopy, Fourier-transform infrared spectroscopy, powder X-ray diffraction, Energy dispersive X-ray (EDX), High Resolution Transmission Electron Microscope, Scanning Electron Microscopy and Thermogravimetric analyser. The bio reduction method is devoid of any toxic chemicals, organic solvents, and external reducing, capping and stabilizing agent. The synthesized AgNPs had spherical shape with particle size ranging between 3.88 and 23.97 nm and had face centered cubic structure. UV-visible spectral analysis confirmed the formation of AgNPs with a characteristic surface plasmon resonance band at 419 nm. The EDX pattern revealed the presence of elemental Ag in AgNPs. The prepared AgNPs were used for degradation of Amaranth, Allura red and Fast green in aqueous medium, with ≥ 92.6% efficiency within 15 min using 5 mg of AgNPs. The optical bandgap, Eg value of 2.26 eV for AgNPs was found to be effective for rapid photocatalytic degradation of all the three dyes. The degradation process was observed to follow pseudo first order kinetics.
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Affiliation(s)
- Ronak Kumar Chaudhari
- Department of Chemistry, School of Sciences, Gujarat University, Navrangpura, Ahmedabad, Gujarat, 380009, India
| | - Priyanka A Shah
- Department of Chemistry, School of Sciences, Gujarat University, Navrangpura, Ahmedabad, Gujarat, 380009, India
- Department of Forensic Sciences, National Forensic Sciences University, Dharwad, Karnataka, 580011, India
| | - Pranav S Shrivastav
- Department of Chemistry, School of Sciences, Gujarat University, Navrangpura, Ahmedabad, Gujarat, 380009, India.
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37
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Nuid M, Aris A, Krishnen R, Chelliapan S, Muda K. Pineapple wastewater as co-substrate in treating real alkaline, non-biodegradable textile wastewater using biogranulation technology. J Environ Manage 2023; 344:118501. [PMID: 37418913 DOI: 10.1016/j.jenvman.2023.118501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 05/25/2023] [Accepted: 06/22/2023] [Indexed: 07/09/2023]
Abstract
This study was to develop biogranules using a sequencing batch reactor (SBR) and to evaluate the effect of pineapple wastewater (PW) as a co-substrate for treating real textile wastewater (RTW). The biogranular system cycle was 24 h (2 stages of phase), with an anaerobic phase (17.8 h) followed by an aerobic phase (5.8 h) for every stage of the phase. The concentration of pineapple wastewater was the main factor studied in influencing COD and color removal efficiency. Pineapple wastewater with different concentrations (7, 5, 4, 3, and 0% v/v) makes a total volume of 3 L and causes the OLRs to vary from 2.90 to 0.23 kg COD/m3day. The system achieved 55% of average color removal and 88% of average COD removal at 7%v/v PW concentration during treatment. With the addition of PW, the removal increased significantly. The experiment on the treatment of RTW without any added nutrients proved the importance of co-substrate in dye degradation.
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Affiliation(s)
- Maria Nuid
- Centre for Environmental Sustainability and Water Security, Research Institute for Sustainable Environment, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Bahru, Malaysia
| | - Azmi Aris
- Centre for Environmental Sustainability and Water Security, Research Institute for Sustainable Environment, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Bahru, Malaysia; Department of Water and Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Bahru, Malaysia.
| | - Ranjeni Krishnen
- Bactiguard South East Asia SDN. BHD., 308b, Jalan Perindustrian Bukit Minyak 18, Penang Science Park, 14100 Penang, Malaysia
| | - Shreeshivadasan Chelliapan
- Centre for Environmental Sustainability and Water Security, Research Institute for Sustainable Environment, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Bahru, Malaysia; Department of Engineering and Technology, Razak Faculty of Technology and Informatics, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, Malaysia
| | - Khalida Muda
- Department of Water and Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Bahru, Malaysia
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Ameen F, Tiri RNE, Bekmezci M, Karimi F, Bennini N, Sen F. Microwave-assisted synthesis of Vulcan Carbon supported Palladium-Nickel (PdNi@VC) bimetallic nanoparticles, and investigation of antibacterial and Safranine dye removing effects. Chemosphere 2023; 339:139630. [PMID: 37487984 DOI: 10.1016/j.chemosphere.2023.139630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/24/2023] [Accepted: 07/21/2023] [Indexed: 07/26/2023]
Abstract
As an alternative to antibiotics, nanoparticles (NPs) are increasingly being used for targeting bacteria. Nanotechnology holds great potential in the treatment of bacterial infections. Although the mechanisms of antibacterial activity of NPs are not fully understood, widely accepted explanations include oxidative stress induction, metal ion release, and non-oxidative processes. Several simultaneous gene changes would be required in the bacterial cell, making it difficult for bacterial cells to develop resistance to NPs. One important application of nanoparticles is in dye removal. Nanoparticle structures can be utilized effectively as adsorbents due to their reduced size and increased surface area, by combining noble metals, Palladium-Nickel (Pd-Ni), with a carbon structure known as Vulcan Carbon (VC), it is anticipated that the consumption of precious metals can be reduced while benefiting from the enhanced properties of the bimetallic structure. The PdNi@VC structure was synthesized using the microwave synthesis technique. Characterization techniques such as Transmission Electron Microscope (TEM) and X-Ray diffraction (XRD) were employed to confirm the formation of the bimetallic structure. According to the Debye-Scherrer equation, the size is 2.74 nm. In addition, photodegradation assays using simulator solar radiation yielded 67% efficacy against Safranine dye. In addition, The PdNi@VC had a high percentage of bacterial inhibition at the concentration of 200 g/ml against Staphylococcus aureus (S.aureus), and Escherichia coli (E.coli). This study focuses on the synthesis of bimetallic nanoparticles for antibacterial applications and investigates their effectiveness in dye removal from wastewater. The obtained results provide valuable insights for the implementation of innovative methods in these areas.
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Affiliation(s)
- Fuad Ameen
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Rima Nour Elhouda Tiri
- Sen Research Group, Department of Biochemistry, University of Dumlupinar, 43000, Kutahya, Turkey; SRG Incorporated Company, Kutahya Design & Technopole, Calca OSB Neighbourhood, 43100, Kutahya, Turkey
| | - Muhammed Bekmezci
- Sen Research Group, Department of Biochemistry, University of Dumlupinar, 43000, Kutahya, Turkey; SRG Incorporated Company, Kutahya Design & Technopole, Calca OSB Neighbourhood, 43100, Kutahya, Turkey; Department of Materials Science & Engineering, Faculty of Engineering, Dumlupinar University, Evliya Celebi Campus, 43000, Kutahya, Turkey
| | - Fatemeh Karimi
- School of Resources and Environment, University of Electronic Science and Technology of China, P.O.Box 611731, Xiyuan Ave, Chengdu, China.
| | - Nihed Bennini
- Sen Research Group, Department of Biochemistry, University of Dumlupinar, 43000, Kutahya, Turkey
| | - Fatih Sen
- Sen Research Group, Department of Biochemistry, University of Dumlupinar, 43000, Kutahya, Turkey.
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Mohapatra S, Das HT, Tripathy BC, Das N. Heterojunction assembled CoO/Ni(OH) 2/Cu(OH) 2 for effective photocatalytic degradation and supercapattery applications. Environ Sci Pollut Res Int 2023; 30:104489-104504. [PMID: 37704813 DOI: 10.1007/s11356-023-29697-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 08/31/2023] [Indexed: 09/15/2023]
Abstract
Mixed multimetallic-based nanocomposites have been considered a promising functional material giving a new dimension to environmental remediation and energy storage applications. On this concept, a hybrid ternary CoO/Ni(OH)2/Cu(OH)2 (CNC) composite showing sea-urchin-like morphology was synthesized via one-pot hydrothermal approach, and its photocatalytic and electrochemical performances were investigated. The photocatalytic performance was explored using Congo red (CR) as a dye pollutant under visible light illumination. The presence of mixed phases of ternary metal ions could minimize the recombination efficacy of photogenerated charge carriers on the basis of the heterojunction mechanism, resulting in 90% degradation of CR dye (40 mg L-1). The effect of scavengers coupled with electrochemical experiments revealed O2-. radical as the predominating species responsible for the degradation of CR. From the electrochemical analysis of CNC, the well-distinguished redox peaks indicated the redox-type nature with a specific capacity of 405 C g-1. For practical applications, an supercapattery (CNC( +)|KOH|AC( -)) was assembled furnishing an energy density of 42 W h kg-1 at a power density of 5160 W kg-1 at 5 A g-1 along with a high capacity retention and coulombic efficiency of 98.83% over 5000 cycles.
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Affiliation(s)
- Subhashree Mohapatra
- Department of Chemistry, Utkal University, Vani Vihar, Bhubaneswar, 751004, India
| | - Himadri Tanaya Das
- Centre for Advanced Materials and Applications, Utkal University, Vani Vihar, Bhubaneswar, 751004, India
| | - Bankim Chandra Tripathy
- Department of Hydro & Electrometallurgy, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, 751013, India
| | - Nigamananda Das
- Department of Chemistry, Utkal University, Vani Vihar, Bhubaneswar, 751004, India.
- Centre for Advanced Materials and Applications, Utkal University, Vani Vihar, Bhubaneswar, 751004, India.
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Khan H, Hussain S, Ud Din MA, Arshad M, Wahab F, Hassan U, Khan A. Multiple design and modelling approaches for the optimisation of carbon felt electro-Fenton treatment of dye laden wastewater. Chemosphere 2023; 338:139510. [PMID: 37454991 DOI: 10.1016/j.chemosphere.2023.139510] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 06/23/2023] [Accepted: 07/13/2023] [Indexed: 07/18/2023]
Abstract
This study utilizes artificial intelligence and statistical modelling to optimize the operating parameters of a carbon-based electro-Fenton process for purifying model dye (RB19)-contaminated wastewater. Multilevel experimental Box-Behnken and uniform deisgns (BBD, UD) with four variables were analysed using polynomial regression analysis (PRA) and artificial neural networks (ANN), while the process optimisation was done using desirability function. For the given testing range but different design matrices and runs, both designs predicted a maximum RB19 removal (RB19-RR) of 90 ± 2.1% at lowest energy consumption (EC) of 0.44 ± 2.5 Wh, when voltage, Na2SO4, FeSO4, and time were maintained as follows: 4-5.3 V, 7-11 mM, 0.4-0.6 mM, and 35-40 min, respectively. All the design-model combinations portrayed the similar senitivity analyses, revealing that RB19 degradation and EC are primarily influenced by electrolysis time and voltage. The performance assessment demonstrated that all the design-model combinations also excellently predicted for unseen conditions as the maximum root mean squared error (RMSE) value for RB19-RR was 4.07, while it was 0.072 for EC, however, BBD-ANN performance proved to be slightly better than others. Having ∼57% less experimentation, UD based models managed to accurately predict the results for unseen conditions as the statistical errors were quite insignificant, even in some cases, RMSE found to be less for UD compared to BBD, elucidating the potential of uniform design as an alternative of conventional factorial designs. Nevertheless, the prediction accuracy is also dependent on modelling approach, as in some cases ANN failed to predict the response precisely specially when dealing with small data. Furthermore, techno-economic evaluation results spell out the efficacy of carbon felt based enhanced electro-Fenton process as promising environmental remediation technology and highlight its practical implication from view of operational cost.
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Affiliation(s)
- Hammad Khan
- Faculty of Materials and Chemical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, Pakistan
| | - Sajjad Hussain
- Faculty of Materials and Chemical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, Pakistan.
| | - Muhammad Amad Ud Din
- Faculty of Materials and Chemical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, Pakistan
| | - Muhammad Arshad
- Department of Chemical Engineering, College of Engineering, King Khalid University, Abha, Saudi Arabia
| | - Fazal Wahab
- Faculty of Materials and Chemical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, Pakistan
| | - Usman Hassan
- Integrated Business Planning Department, My Clinic International Medical Company, Prince Sultan Road, PO Box 260, Jeddah, Saudi Arabia
| | - Abad Khan
- EHS Department, Unilever, Dubai, United Arab Emirates
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Sirajudheen P, Vigneshwaran S, Kasim VCR, Basheer MC, Meenakshi S. Mechanistic view of MoS 2 confined chitosan-polyaniline hybrid composite for the photo-oxidation of cationic dyes. Int J Biol Macromol 2023; 249:126008. [PMID: 37516229 DOI: 10.1016/j.ijbiomac.2023.126008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/18/2023] [Accepted: 07/25/2023] [Indexed: 07/31/2023]
Abstract
In this article, we describe the formulation of polyaniline-chitosan/MoS2 (PANI-CS @MoS2) blended composite and evaluated its efficiency to degrade the dye molecules Rhodamine B (RhB) and Malachite Green (MG) under visible light. In the photocatalytic mechanism, the CS acts as an electron carrier and binding agent during the oxidation reaction to decrease the recombination of electrons and holes generated by the irradiation of light. FTIR, XPS, XRD, TG, Zeta Potential, UV, SEM, AFM and TEM were used to characterize the PANI-CS@MoS2 composite after it had been synthesized. For the degradation analysis, 30 mg/L concentrations of 50 mL MG and RhB dye solutions were used. The recommended dosage of the composite was 100 mg. For MG and RhB dyes, the colour removal rates were 96.2 % and 91.5 %, respectively, under exposure to visible light and at the pH ranges of 8-11. After being exposed to visible light for 60 min, the whole decay process was accomplished. The photocatalyst offers great extensibility up to five iterations. The Langmuir-Hinshelwood kinetic model governs the rate of dye molecules degradation. The result of the study revealed that the PANI-CS@MoS2 composite matrix perhaps be a trustworthy and practical substrate for the efficient refinement of dye-deteriorated water.
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Affiliation(s)
- P Sirajudheen
- Department of Chemistry, Pocker Sahib Memorial Orphanage College, Tirurangadi, Malappuram, Kerala 676306, India.
| | - S Vigneshwaran
- Environmental System Laboratory, Department of Civil Engineering, Kyung Hee University Global Campus, 1732 Deogyong-daero, Giheung-Gu, Yongin-Si, Gyeonggi-Do 16705, Republic of Korea
| | - V C Resha Kasim
- Department of Chemistry, Pocker Sahib Memorial Orphanage College, Tirurangadi, Malappuram, Kerala 676306, India
| | - M C Basheer
- Department of Chemistry, Pocker Sahib Memorial Orphanage College, Tirurangadi, Malappuram, Kerala 676306, India
| | - S Meenakshi
- Department of Chemistry, The Gandhigram Rural Institute- Deemed to be University, Gandhigram, Dindigul, Tamil Nadu 624302, India.
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Alshammari GM, Al-Ayed MS, Abdelhalim MA, Al-Harbi LN, Qasem AA, Abdo Yahya M. Fabrication of hierarchical flower-like WO 3 nanoparticles for effective metal ions sensing and catalytic degradation of organic dyes. Environ Res 2023; 233:116468. [PMID: 37343748 DOI: 10.1016/j.envres.2023.116468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 06/15/2023] [Accepted: 06/18/2023] [Indexed: 06/23/2023]
Abstract
In this work, we report on the synthesis of flower-like tungsten oxide nanoparticles (WO3 NPs) using a simple precipitation method. This paper reports a simple method for synthesizing flower-like WO3 NPs, which can be used for environmentally treating hazardous organic pollutants. The photocatalytic degradation of model artificial Orange II and Congo red was assessed under natural sunlight irradiation. The surface morphologies, crystallinity, and binding energy of the synthesized WO3 NPs were determined. The synthesized WO3 NPs exhibited good photodegradation percentages of approximately Orange II (97.6%) and Congo red dye (98.2%) after 120 min of irradiation. Furthermore, the WO3 NPs maintained their degradation ability for up to three cycles. In addition, WO3 NPs were examined in different metal ions sensing (Hg2+, Fe2+, Cu2+, Ni2+, and Cd2+) in an aqueous solution. The results showed that the WO3 NPs exhibited excellent Cd2+ ion sensing. Based on the investigations, WO3 NPs proved to be an efficient photocatalyst and hold promise as the best material for future applications in preventing water pollution.
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Affiliation(s)
- Ghedeir M Alshammari
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Mohammed S Al-Ayed
- Department of Physics and Astronomy, College of Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mohamed Anwar Abdelhalim
- Department of Physics and Astronomy, College of Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Laila Naif Al-Harbi
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Akram A Qasem
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mohammed Abdo Yahya
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
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Kumar R, Janbandhu SY, Sukhadeve GK, Gedam RS. Visible light assisted surface plasmon resonance triggered Ag/ZnO nanocomposites: synthesis and performance towards degradation of indigo carmine dye. Environ Sci Pollut Res Int 2023; 30:98619-98631. [PMID: 36053425 DOI: 10.1007/s11356-022-22745-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
Water pollution caused by organic compounds, generated from different industries, has gained attention worldwide today. In this regard, significant efforts have been made for a suitable dye degradation technology. Zinc oxide (ZnO)-based photocatalysts are considered novel materials to degrade organic effluents in contaminated water. The facile synthesis of Ag/ZnO nanocomposites and its application for the enhanced degradation of indigo carmine (IC) dye under visible light irradiation is reported in this paper. The prepared photocatalysts were characterized using various analytical techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron (XPS) spectroscopy, FTIR, Raman, impedance study, UV-Vis, and photoluminescence (PL). Prepared Ag/ZnO nanocomposites were tested for degradation of IC dye in visible light. The degradation efficiency of IC dye was found to be 95.71% in 120 min, with a rate constant of 0.02021 min-1. This improved photocatalytic activity of Ag/ZnO nanocomposites was mainly due to the absorption of visible light caused by surface plasmon resonance (SPR) derived from Ag nanoparticles (NPs) and electron-hole separation. Radical trapping experiments suggest that holes (h+) and superoxide radical (O2•-) are the key factors in photocatalytic IC dye degradation.
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Affiliation(s)
- Rahul Kumar
- Department of Physics, Visvesvaraya National Institute of Technology, Nagpur, 440010, India
| | | | - Gaurav K Sukhadeve
- Department of Physics, Visvesvaraya National Institute of Technology, Nagpur, 440010, India
| | - Rupesh S Gedam
- Department of Physics, Visvesvaraya National Institute of Technology, Nagpur, 440010, India.
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Shoran S, Chaudhary S, Sharma A. Photocatalytic dye degradation and antibacterial activities of CeO 2/g-C 3N 4 nanomaterials for environmental applications. Environ Sci Pollut Res Int 2023; 30:98682-98700. [PMID: 36318413 DOI: 10.1007/s11356-022-23815-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
The uncontrolled dumping of synthetic dyes into water sources has posed severe hazards to the ecosystem. For decades, several materials with low cost and high efficiency have been investigated for dye degradation. Photocatalytic degradation is regarded as a successful strategy since it utilizes sunlight to transform harmful pollutants into nontoxic compounds without using oxidative agents. The photocatalytic potentials of CeO2/g-C3N4 (CG) were investigated in this work using a simplistic ultrasonication process. Here, the amount of CeO2 was fixed, and g-C3N4 was varied in the ratio (1:x, where x = 1, 2, and 3) and abbreviated as CG1, CG2, and CG3. Characterization techniques such as Fourier transforms-infrared spectroscopy, thermal gravimetric analysis (TGA), powdered X-ray diffraction, ultraviolet-visible spectroscopy, etc. were used to characterize structural analysis, optical properties, particle size, and chemical bonds of the prepared nanocomposites. The photocatalytic results showed that CG2 effectively degraded rose bengal (RB) and crystal violet (CV) dyes when exposed to visible light irradiation as compared to pure GCN and CeO2. The antibacterial activity analysis further supported the potential application of prepared photocatalyst as a disinfectant agent against both gram-positive (Staphylococcus aureus and Bacillus cereus) and gram-negative (Salmonella abony and Escherichia coli) pathogenic strains of bacteria.
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Affiliation(s)
- Sachin Shoran
- Center of Excellence for Energy and Environmental Studies, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039, Haryana, India
| | - Sudesh Chaudhary
- Center of Excellence for Energy and Environmental Studies, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039, Haryana, India
| | - Anshu Sharma
- Department of Physics, School of Engineering and Technology, Central University of Haryana, Mahendergarh, 123031, Haryana, India.
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Singh KR, Poluri KM. Facile synthesis and physicochemical characterization of κ-Carrageenan-silver-bentonite based nanocatalytic platform for efficient degradation of anionic azo dyes. Environ Res 2023; 231:116145. [PMID: 37217127 DOI: 10.1016/j.envres.2023.116145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 04/16/2023] [Accepted: 05/13/2023] [Indexed: 05/24/2023]
Abstract
Water pollution due to textile industry effluents is a global concern that warrants versatile research solutions for degrading them, and for a sustainable environment. In the present work, by using the imperative role of nanotechnology, a facile one-pot synthesis has been devised to generate κ-carrageenan capped silver nanocatalyst (CSNC), and was immobilized on 2D bentonite (BT) sheets to generate nanocatalytic platform (BTCSNC) for the degradation of anionic azo dyes. The nanocomposite(s) were physicochemically characterized using UV-Vis, DLS, TEM, FESEM, PXRD, ATR-FTIR, TGA, BET and XPS etc., to obtain insights into the nanocomposite composition, structure, stability, morphology and mechanism of interaction. The obtained CNSC are monodispersed, spherical with a size of 4 ± 2 nm, and were stabilized by the functional groups (-OH, COO‾, and SO3‾) of κ-Crg. The broadening of peak corresponding to basal plane (001) of BT montmorillonite in PXRD spectra established its exfoliation upon addition of CSNC. XPS and ATR-FTIR data evidenced the absence of covalent interactions between CSNC and BT. The catalytic efficiency of CSNC and BTCSNC composites were compared for the degradation of methyl orange (MO) and congo red (CR). The reaction followed a pseudo first order kinetics, and immobilization of CSNC on BT resulted in a 3-4 fold enhancement in degradation rates. The rates achieved for the degradation kinetics are: MO degradation within 14 s (Ka 9.86 ± 2.00 min-1), and CR degradation within 120 s (Ka of 1.24 ± 0.13 min-1). Further, a degradation mechanism has been proposed by analyzing the products identified through LC-MS. The reusability studies of the BTCSNC evidenced the complete activity of the nanocatalytic platform for six cycles, and gravitational separation method for catalyst recycling. In a nutshell, the current study provided an environmentally friendly, sizable, and sustainable nano catalytic platform" for the remediation of industrial wastewater contaminated with hazardous azo dyes".
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Affiliation(s)
- Khushboo Rani Singh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Krishna Mohan Poluri
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India; Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.
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46
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Yang Y, Wang N, Gu H. Synthesis of submicron ferrous oxalate from red mud with high Fenton catalytic performance on degradation of methylene blue. Environ Sci Pollut Res Int 2023; 30:85210-85222. [PMID: 37386219 DOI: 10.1007/s11356-023-28308-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 06/13/2023] [Indexed: 07/01/2023]
Abstract
Ferrous oxalate dihydrate (FOD) can be used as a photo-Fenton catalyst with remarkable photo-Fenton catalytic and photocatalytic performances on organic pollutant degradation. Various reduction processes were compared in the current study to synthesize FODs from ferric oxalate solution utilizing the iron source in alumina waste red mud (RM), including natural light exposure (NL-FOD), UV light irradiation (UV-FOD), and hydroxylamine hydrochloride hydrothermal method (HA-FOD). The FODs were characterized and employed as photo-Fenton catalysts for methylene blue (MB) degradation, and the effects of HA-FOD dosage, H2O2 dosage, MB concentration, and the initial pH were investigated. The results show that HA-FOD has submicron sizes and lower impurity contents with more rapid degradation rates and higher degradation efficiencies compared with the other two FOD products. When using 0.1 g/L of each obtained FOD, 50 mg/L of MB can be rapidly degraded by HA-FOD by 97.64% within 10 min with 20 mg/L of H2O2 at pH of 5.0, while NL-FOD and UV-FOD achieve 95.52% in 30 min and 96.72% in 15 min at the same conditions, respectively. Meanwhile, HA-FOD exhibits strong cyclic stability after two recycling experiments. Scavenger experiments reveal that the predominant reactive oxygen species responsible for MB degradation are hydroxyl radicals. These findings demonstrate that submicron FOD catalyst can be synthesized using hydroxylamine hydrochloride hydrothermal process from ferric oxalate solution with high photo-Fenton degradation efficiency and reduced reaction time for wastewater treatment. The study also provides a new pathway of efficient utilization for RM.
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Affiliation(s)
- Yuxin Yang
- Key Laboratory of High-Temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ning Wang
- Key Laboratory of High-Temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
| | - Hannian Gu
- Key Laboratory of High-Temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
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Priyadharsan A, Ranjith R, Karmegam N, Thennarasu G, Ragupathy S, Hwan Oh T, Ramasundaram S. Effect of metal doping and non-metal loading on light energy driven degradation of organic dye using ZnO nanocatalysts. Chemosphere 2023; 330:138708. [PMID: 37072085 DOI: 10.1016/j.chemosphere.2023.138708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 03/26/2023] [Accepted: 04/14/2023] [Indexed: 05/14/2023]
Abstract
Photocatalytic degradation of azo dyes is seen as a viable technique for addressing environmental and energy concerns simultaneously. Therefore, the primary requirement is the creation of a better catalyst with adequate product selectivity for removal efficiency under solar light. Herein, pure ZnO and Cu (0.10 M) doped cotton stalk activated carbons with ZnO (Cu-doped ZnO/CSAC) were produced, and these are labelled as CZ1, CZ2, CZ3, and CZ3/CSAC, respectively. The optoelectronic and photodegradation efficiencies were examined regarding the impact of doping and loading samples. The XRD patterns confirmed that the CZ3/CSAC sample exhibited a hexagonal wurtzite structure. The XPS survey confirmed that Cu ions were incorporated into the ZnO lattice in a Cu2+ oxidation state. The band gap value (CZ3/CSAC) was reduced (2.38 eV) compared to pure ZnO and CZ3. Moreover, PL and EIS analysis proved more efficient at separating photoinduced charged carriers for CZ3/CSAC than all other samples. The CZ3/CSAC sample showed improved photocatalytic degradation efficiency (93.09%) compared to the pure ZnO and CZ3 samples using brilliant green (BG) dye under sunlight irradiation.
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Affiliation(s)
- A Priyadharsan
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 600 077, India
| | - R Ranjith
- Department of Physics, KSR College of Engineering, Thiruchengode, 637 215, Tamilnadu, India
| | - N Karmegam
- PG and Research Department of Botany, Government Arts College (Autonomous), Salem, 636 007, Tamil Nadu, India
| | - G Thennarasu
- Department of Chemistry, C. Kandaswami Naidu College for Men (A Unit of Pachaiyappa's Trust), Anna Nagar East, Chennai, 600 102, Tamil Nadu, India
| | - S Ragupathy
- Department of Physics, E.R.K. Arts and Science College, Erumiyampatti, Dharmapuri, 636905, Tamil Nadu, India; Department of Physics, Government Arts & Science College for women, Karimangalam, Dharmapuri-635111, Tamil Nadu, India.
| | - Tae Hwan Oh
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38436, Republic of Korea
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Velidandi A, Sarvepalli M, Gandam PK, Prashanth Pabbathi NP, Baadhe RR. Characterization, catalytic, and recyclability studies of nano-sized spherical palladium particles synthesized using aqueous poly-extract (turmeric, neem, and tulasi). Environ Res 2023; 228:115821. [PMID: 37019298 DOI: 10.1016/j.envres.2023.115821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 03/04/2023] [Accepted: 03/30/2023] [Indexed: 05/16/2023]
Abstract
Green synthesis of noble metal nanoparticles (NPs) has gained immense significance compared to other metal ions owing to their unique properties. Among them, palladium 'Pd' has been in the spotlight for its stable and superior catalytic activity. This work focuses on the synthesis of Pd NPs using the combined aqueous extract (poly-extract) of turmeric (rhizome), neem (leaves), and tulasi (leaves). The bio-synthesized Pd NPs were characterized to study its physicochemical and morphological features using several analytical techniques. Role of Pd NPs as nano-catalysts in the degradation of dyes (1 mg/2 mL stock solution) was evaluated in the presence of a strong reducing agent (sodium borohydride; SBH). In the presence of Pd NPs and SBH, maximum reduction of methylene blue (MB), methyl orange (MO), and rhodamine-B (Rh-B) dyes was observed under 20nullmin (96.55 ± 2.11%), 36nullmin (96.96 ± 2.24%), and 27nullmin (98.12 ± 1.33%), with degradation rate of 0.1789 ± 0.0273 min-1, 0.0926 ± 0.0102 min-1, and 0.1557 ± 0.0200 min-1, respectively. In combination of dyes (MB + MO + Rh-B), maximum degradation was observed under 50nullmin (95.49 ± 2.56%) with degradation rate of 0.0694 ± 0.0087 min-1. It was observed that degradation was following pseudo-first order reaction kinetics. Furthermore, Pd NPs showed good recyclability up to cycle 5 (72.88 ± 2.32%), cycle 9 (69.11 ± 2.19%) and cycle 6 (66.21 ± 2.72%) for MB, MO and Rh-B dyes, respectively. Whereas, up to cycle 4 (74.67 ± 0.66%) during combination of dyes. As Pd NPs showed good recyclability, they can be used for several cycles thus influencing the overall economics of the process.
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Affiliation(s)
- Aditya Velidandi
- Department of Biotechnology, National Institute of Technology, Warangal, Telangana, 506004, India.
| | - Mounika Sarvepalli
- Department of Biotechnology, National Institute of Technology, Warangal, Telangana, 506004, India.
| | - Pradeep Kumar Gandam
- Department of Biotechnology, National Institute of Technology, Warangal, Telangana, 506004, India.
| | | | - Rama Raju Baadhe
- Department of Biotechnology, National Institute of Technology, Warangal, Telangana, 506004, India.
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Arzaee NA, Betti N, Al-Amiery A, Roslam Wan Isahak WN. The role of tin species in doped iron (III) oxide for photocatalytic degradation of methyl orange dye under UV light. Heliyon 2023; 9:e18076. [PMID: 37483778 PMCID: PMC10362135 DOI: 10.1016/j.heliyon.2023.e18076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/29/2023] [Accepted: 07/05/2023] [Indexed: 07/25/2023] Open
Abstract
Iron (III) oxide, a stable semiconductor with versatile applications, was synthesized alongside Sn-doped Fe2O3 (Sn-Fe2O3) using the sol-gel technique. Characterization via X-ray diffraction, field-emission scanning electron microscopy, and UV-visible spectroscopy confirmed the presence of α- and γ-Fe2O3 phases in the synthesized powders. Incorporation of the dopant reduced the initial band gap energy of Fe2O3 (2.2 eV) by approximately 0.1 eV. To evaluate photocatalytic performance, Fe2O3 and Sn-Fe2O3 were tested for decolorization efficiency of a methyl orange solution. Results revealed the 5 wt% Sn-doped catalyst as optimal, achieving complete degradation of methyl orange within 120 min under simulated solar light. The addition of small amounts of Sn effectively reduced the Fe2O3 band gap and significantly enhanced photocatalytic performance. Investigation of pH and dye concentration impact on photocatalytic degradation revealed superior activity under acidic conditions compared to alkaline. Furthermore, maintaining a moderate concentration of methyl orange (10 ppm) ensured optimum photocatalytic activity.
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Affiliation(s)
- Nurul Affiqah Arzaee
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
| | - Nadia Betti
- Materials Engineering Department, University of Technology-Iraq, P.O. Box: 10001, Baghdad, Iraq
| | - Ahmed Al-Amiery
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
| | - Wan Nor Roslam Wan Isahak
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
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50
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Manikandan V, Palanisamy G, Lee J, F Albeshr M, Fahad Alrefaei A, Pragasan LA, Zhang F, Liu X. Development of silver oxide-loaded reduced graphene oxide nanohybrids for enhanced photocatalytic activity under visible light in aqueous solutions. Chemosphere 2023:139227. [PMID: 37327825 DOI: 10.1016/j.chemosphere.2023.139227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/30/2023] [Accepted: 06/13/2023] [Indexed: 06/18/2023]
Abstract
We report on the synthesis of silver oxide/reduced graphene oxide nanocomposites (Ag/rGO NCs) using a hydrothermal technique. This paper presents a simple method for synthesizing Ag/rGO hybrid nanocomposites, which can be used for environmentally treating hazardous organic pollutants. The photocatalytic degradation of model artificial Rhodamine B dye and bisphenol A was assessed under visible light illumination. The crystallinity, binding energy, and surface morphologies of the synthesized samples were determined. The silver oxide loading sample resulted in a decrease in the rGO crystallite size. SEM and TEM images demonstrate strong adhesion of the Ag NPs to the rGO sheets. XPS analysis validated the binding energy and elemental composition of the Ag/rGO hybrid nanocomposites. The objective of the experiment was to enhance the photocatalytic efficiency of rGO in the visible region using Ag nanoparticles. The synthesized nanocomposites in the visible region exhibited good photodegradation percentages of approximately 97.5% and 98.6% after 120 min of irradiation for pure rGO, Ag NPs, and Ag/rGO nanohybrid, respectively. Furthermore, the Ag/rGO nanohybrid maintained their degradation ability for up to three cycles. The synthesized Ag/rGO nanohybrid demonstrated enhanced photocatalytic activity, expanding their potential for environmental remediation. Based on the investigations, Ag/rGO nanohybrid proved to be an effective photocatalyst and holds promise as an ideal material for future applications in preventing water pollution.
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Affiliation(s)
- Velu Manikandan
- School of Physics and Electronic Information, Yan'an University, Yan'an, 716000, China; Department of Food Science and Technology, Seoul Women's University, 621 Hwarangno, Nowon-gu, Seoul, South Korea; Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamilnadu, 600 077, India
| | - Govindasamy Palanisamy
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Republic of Korea.
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Republic of Korea
| | - Mohammed F Albeshr
- Department of Zoology, College of Sciences, King Saud University, P.O.Box.2455, Riyadh, 11451, Saudi Arabia
| | - Abdulwahed Fahad Alrefaei
- Department of Zoology, College of Sciences, King Saud University, P.O.Box.2455, Riyadh, 11451, Saudi Arabia
| | - L Arul Pragasan
- Department of Environmental Sciences, Bharathiar University, Coimbatore, 641 046, India
| | - Fuchun Zhang
- School of Physics and Electronic Information, Yan'an University, Yan'an, 716000, China.
| | - Xinghui Liu
- School of Physics and Electronic Information, Yan'an University, Yan'an, 716000, China.
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