1
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Aulakh MK, Singh H, Vashisht A, Kang TS, Sharma R. Improved Photoresponse of Sunlight-driven Mnn+-ZnO (n = 2, 4, 7) Nanostructures: A Study of Oxidative Degradation of Methylene Blue. Top Catal 2022. [DOI: 10.1007/s11244-022-01703-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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2
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Balarabe BY, Maity P. Visible light-driven complete photocatalytic oxidation of organic dye by plasmonic Au-TiO2 nanocatalyst under batch and continuous flow condition. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Photoreactor-Initiated Acetaldehyde Conversion Rate of a TiO2-Surface-Treated Alumina Photocatalyst Prepared Using the Sol–Gel Method. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12125796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
In this study, a TiO2–alumina photocatalyst was manufactured by coating a surface-treated alumina substrate with TiO2 sol using the sol–gel method, and the photolysis and conversion of acetaldehyde in the gas phase were evaluated. The effects of acetaldehyde flow rate (i.e., retention time), ultraviolet wavelength, moisture, and catalyst heat-treatment temperature on the conversion of acetaldehyde were investigated. The experiments confirmed that a decrease in flow rate (i.e., increase in retention time), increase in moisture level, and decrease in the ultraviolet wavelength of the light source increased the conversion rate of the gaseous acetaldehyde. Among the three heat-treatment temperatures (450, 650, and 850 °C) used in the catalyst manufacturing process, the catalyst treated at 650 °C had the highest acetaldehyde conversion rate. As a result of its increased acetaldehyde decomposition and photoefficiency, the newly manufactured TiO2–alumina photocatalyst is expected to be used alongside a photoreactor as an air-purifying filter. Furthermore, the photocatalyst surface treatment demonstrated herein can be adopted to fabricate various environmentally friendly materials in the future.
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4
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Moradeeya PG, Sharma A, Kumar MA, Basha S. Titanium dioxide based nanocomposites - Current trends and emerging strategies for the photocatalytic degradation of ruinous environmental pollutants. ENVIRONMENTAL RESEARCH 2022; 204:112384. [PMID: 34785207 DOI: 10.1016/j.envres.2021.112384] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 11/07/2021] [Accepted: 11/10/2021] [Indexed: 06/13/2023]
Abstract
Many ruinous pollutants are omnipresent in the environment and among them; pesticides are xenobiotic and pose to be a bio-recalcitrance. Their detrimental ecological and environmental impacts attract attention of environmental excerpts and the surge of stringent regulations have endows the need of a technically feasible treatment. This critical review emphasizes about the occurrence, abundance and fate of structurally distinct pesticides in different environment. The practiced remedial strategies and in particular, the advanced oxidation processes (AOPs) those utilize the photo-catalytic properties of nano-composites for the degradation of pollutants are critically discussed. Photo-catalytic degradation utilizes many composite materials at nano-scale level, wherein synthesis of nano-composites with appropriate precursors and other adjoining functional moieties are of prime importance. Therefore, suitable starter materials along with the reaction conditions are prerequisite for effectively tailoring the nano-composites. The aforementioned aspects and their customized applications are critically discussed. The associated challenges, opportunities and process economics of degradation using photo-catalytic AOP techniques are highlighted and in addition, the review tries to explain how best the photo-degradation can be a stand-alone tool with a societal importance. Conclusively, the future prospects for undertaking new researches in photo-catalytic breakdown of pollutants that can be judiciously sustainable.
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Affiliation(s)
- Pareshkumar G Moradeeya
- Hyderabad Zonal Laboratory, CSIR-National Environmental Engineering Research Institute, IICT Campus, Tarnaka, Hyderabad, 500 007, Telangana, India; Department of Environmental Science & Engineering, Marwadi Education Foundation, Rajkot, 360 003, Gujarat, India
| | - Archana Sharma
- Department of Environmental Science & Engineering, Marwadi Education Foundation, Rajkot, 360 003, Gujarat, India
| | - Madhava Anil Kumar
- Analytical and Environmental Science Division & Centralized Instrument Facility, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar, 364 002, Gujarat, India
| | - Shaik Basha
- Hyderabad Zonal Laboratory, CSIR-National Environmental Engineering Research Institute, IICT Campus, Tarnaka, Hyderabad, 500 007, Telangana, India.
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5
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Singh SK, Mishra PK, Upadhyay SN. Recent developments in photocatalytic degradation of insecticides and pesticides. REV CHEM ENG 2021. [DOI: 10.1515/revce-2020-0074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Widespread use of pesticides in agricultural and domestic sectors and their long half-life have led to their accumulation in the environment beyond permissible limits. Advanced chemical oxidation methods including photocatalytic degradation are being widely investigated for their mineralization. Photocatalytic degradation is the most promising method for degrading pesticides as well as other organic pollutants. Titanium dioxide with or without modification has been widely used as the photocatalyst. Some research groups have also tried other photocatalysts. This review presents a critical summary of the research results reported during the past two decades as well as the scope for future research in this area.
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Affiliation(s)
- Santosh Kumar Singh
- Centre for Fire Explosives and Environment Safety (CFEES), DRDO , Delhi , 110054 , India
| | - Pradeep Kumar Mishra
- Department of Chemical Engineering & Technology , Indian Institute of Technology (Banaras Hindu University) Varanasi , Varanasi , 221005 , UP , India
| | - Siddh Nath Upadhyay
- Department of Chemical Engineering & Technology , Indian Institute of Technology (Banaras Hindu University) Varanasi , Varanasi , 221005 , UP , India
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6
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Singh S, Kumar V, Kanwar R, Wani AB, Gill JPK, Garg VK, Singh J, Ramamurthy PC. Toxicity and detoxification of monocrotophos from ecosystem using different approaches: A review. CHEMOSPHERE 2021; 275:130051. [PMID: 33676273 DOI: 10.1016/j.chemosphere.2021.130051] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 02/08/2021] [Accepted: 02/18/2021] [Indexed: 06/12/2023]
Abstract
Monocrotophos (MCP) is an organophosphate insecticide with broad application in agricultural crops like rice, maize, sugarcane, cotton, soybeans, groundnut and vegetables. MCP solubilize in water readily and thus reduced sorption occurs in soil. This leads to MCP leaching into the groundwater and pose a significant threat of contamination. The MCP's half-life depends on the temperature and pH value and estimated as 17-96 d. But the half-life of technical grade MCP can exceed up to 2500 days if properly stored at 38 °C in a glass or polyethylene container in a stable condition. It causes abnormality, ranging from mild to severe confusion, agitation, hypersalivation, convulsion, pulmonary failure, senescence in mammals and insects. MCP affects humans by inhibiting the activity of the acetylcholine esterase enzyme. MCP is accountable for the catalytic degradation of acetylcholine and affects the neurotransmission between neurons. This review discusses MCP's various aspects and fate on aquatic and terrestrial life forms, quantification methods for monitoring, various degradation processes, and their mechanisms. Different case studies related to its impact on the human population in different parts of the world have been discussed. Efforts have also been made to summarize and present different microbial population's role in its degradation and mineralization.
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Affiliation(s)
- Simranjeet Singh
- Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Sciences, Bangalore, 560012, India
| | - Vijay Kumar
- Department of Chemistry, Regional Ayurveda Research Institute for Drug Development, Gwalior, 474009, India
| | - Ramesh Kanwar
- Department of Agricultural and Biosystems Engineering, Iowa State University, USA
| | - Abdul Basit Wani
- Department of Chemistry, School of Bioengineering and Biosciences, Lovely Professional University, Delhi-Jalandhar Highway, Phagwara, 144411, Punjab, India
| | | | - Vinod Kumar Garg
- Department of Environmental Sciences and Technology, Central University of Punjab, Mansa Road, Bathinda, 151001, Punjab, India.
| | - Joginder Singh
- Department of Microbiology, School of Bioengineering and Biosciences, Lovely Professional University, Delhi-Jalandhar Highway, Phagwara, 144411, Punjab, India.
| | - Praveen C Ramamurthy
- Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Sciences, Bangalore, 560012, India.
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7
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Natsathaporn P, Jenjob R, Pattanasattayavong P, Yiamsawas D, Crespy D. Photocatalytic degradation of pesticides by nanofibrous membranes fabricated by colloid-electrospinning. NANOTECHNOLOGY 2020; 31:215603. [PMID: 31995794 DOI: 10.1088/1361-6528/ab713d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Photocatalytic degradation of organic pollutants is a promising way to clean wastewater. Herein, we develop and compare two processes for fabricating nanofibrous membranes with photocatalytic properties. Hybrid nanofibers are produced by colloid-electrospinning and composed of metal oxide nanoparticles on sintered SiO2 nanoparticles. The latter serves as support for the photocatalyst and preserves the structural integrity of nanofibers. Adsorption of metal salts on crosslinked polymer/SiO2 fibers followed by calcination allows for the obtention of fibers with large amounts of metal oxide. Nanofibrous membranes with supported ZnO, In2O3, or mixture of both, display photocatalytic activity upon UV irradiation. The membranes can degrade a dye and an organophosphate pesticide more effectively than membranes directly fabricated from the calcination of metal oxides.
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Affiliation(s)
- Papada Natsathaporn
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
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8
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Meena S, Anantharaju KS, Vidya YS, Renuka L, Malini S, Sharma SC, Nagabhushana H. MnFe2O4/ZrO2 nanocomposite as an efficient magnetically separable photocatalyst with good response to sunlight: preparation, characterization and catalytic mechanism. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2086-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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9
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Balasubramanian J, Ponnaiah SK, Periakaruppan P, Kamaraj D. Accelerated photodeterioration of class I toxic monocrotophos in the presence of one-pot constructed Ag 3PO 4/polyaniline@g-C 3N 4 nanocomposite: efficacy in light harvesting. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:2328-2339. [PMID: 31782097 DOI: 10.1007/s11356-019-06811-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 10/17/2019] [Indexed: 06/10/2023]
Abstract
Water and soil contamination has become unavoidable due to the enormous usage of pesticides in agriculture. Among the pesticides, monocrotophos (MCP), a popular and largely used pesticide, is extremely toxic to birds and humans, which is easily leached into the environment. Therefore, establishment of a green tactic to clean the environment from such hazard is very essential. Herein, we have developed a novel ternary nanocomposite, Ag3PO4/polyaniline@g-C3N4 with enhanced electron-hole separation efficiency, a condition which is very much required for any photocatalyst. The nanocomposite was one-pot synthesized by a simple and economical hydrothermal method. The strategically modulated band gaps of the nanocomposite help harvest the sunlight efficaciously for the robust degradation of MCP (99.6%). It has been found that the active species involved in the photo-cleaning process are OH· and O2·-. A suitable reaction mechanism has been proposed and discussed. Analytical techniques, which include energy-dispersive X-ray spectroscopy (EDX), field emission scanning electron microscopy (FE-SEM), elemental mapping analysis, high-resolution transmission electron microscopy (HR-TEM), Fourier transform infrared (FT-IR) spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy (UV-DRS), and X-ray diffraction (XRD), were used to characterize the synthesized nanocomposite. This nano-photocatalyst, which is simple, stable, and reusable, certainly has potential applications in soil contamination remediation, sewage treatments, and other environment decontaminations. Also, a study of this kind offers more strategic plans for the production of clean energy (hydrogen) by solar-driven water splitting.
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Affiliation(s)
| | | | | | - Dhivya Kamaraj
- Department of Civil Engineering, Sethu Institute of Technology, Virudhunagar, Tamil Nadu, 626115, India
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10
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Khairnar SD, Shrivastava VS. Photocatalytic degradation of chlorpyrifos and methylene blue using α-Bi2O3 nanoparticles fabricated by sol–gel method. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0761-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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11
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Tanwar R, Mandal UK. Photocatalytic activity of Ni0.5Zn0.5Fe2O4@polyaniline decorated BiOCl for azo dye degradation under visible light – integrated role and degradation kinetics interpretation. RSC Adv 2019; 9:8977-8993. [PMID: 35517658 PMCID: PMC9062050 DOI: 10.1039/c9ra00548j] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 03/04/2019] [Indexed: 12/07/2022] Open
Abstract
The photocatalytic activity of BiOCl is tuned through heterogeneous decoration with an integrated Ni0.5Zn0.5Fe2O4@polyaniline. The outstanding degradation capacity, effects of parameters on degradation kinetics and a kinetic model using regression analysis is reported.
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Affiliation(s)
- Ruchika Tanwar
- University School of Chemical Technology
- G. G. S. Indraprastha University
- Dwarka
- India
| | - Uttam Kumar Mandal
- University School of Chemical Technology
- G. G. S. Indraprastha University
- Dwarka
- India
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12
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Cunff JL, Tomašić V, Gomzi Z. Photocatalytic degradation of terbuthylazine: Modelling of a batch recirculating device. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2017.11.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Srinivasulu M, Nilanjan PC, Chakravarthi BVSK, Jayabaskaran C, Jaffer MG, Naga RM, Manjunatha B, Darwin RO, Juan OT, Rangaswamy V. Biodegradation of monocrotophos by bacteria isolated from soil. ACTA ACUST UNITED AC 2017. [DOI: 10.5897/ajb2015.14885] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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14
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Sivagami K, Vikraman B, Krishna RR, Swaminathan T. Chlorpyrifos and Endosulfan degradation studies in an annular slurry photo reactor. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2016; 134:327-331. [PMID: 26560434 DOI: 10.1016/j.ecoenv.2015.08.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 07/30/2015] [Accepted: 08/15/2015] [Indexed: 05/11/2023]
Abstract
TiO2 is one of those compounds which are highly used in photocatalytic degradation of substrates using UV radiation. The substrates are degraded oxidatively and hence finds an important position in advanced oxidation for water/wastewater treatment processes. The thrust of this research was to evaluate the effectiveness of Heterogeneous Photocatalysis (HP) technique, for the removal of pesticides from water/wastewater. The photo-catalytic degradation of two pesticides, widely used in India, viz., Endosulfan (ES) and Chlorpyriphos (CPS) was studied in an annular slurry photo reactor under UVillumination at 254nm. Results revealed that the degradation rate is significantly affected by the initial pesticide concentration, pH of the solution and catalyst concentration. Batch degradation studies on Endosulphan and Chlorpyrifos were conducted in the concentration range from 5 to 25mg/L at a pH ranging from 3.5 to 10.5 and at a catalyst loading of 0.5-2g/L. Endosulphan removal efficiency was about 80-99% and chlorpyrifos removal efficiency was about 84-94%. L-H rate constants were determined using L-H kinetics. High removal efficiencies obtained (80-99%) indicate the effectiveness of this process and its potential for practical application.
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Affiliation(s)
- K Sivagami
- Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
| | - B Vikraman
- Department of Chemical Engineering, Sri Venkateswara College of Engineering,, Sriperumpudur Sriperumpudur, India
| | - R Ravi Krishna
- Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - T Swaminathan
- Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
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15
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da Silva WL, Lansarin MA, Dos Santos JHZ, Silveira F. Photocatalytic degradation of rhodamine B, paracetamol and diclofenac sodium by supported titania-based catalysts from petrochemical residue: effect of doping with magnesium. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 74:2370-2383. [PMID: 27858793 DOI: 10.2166/wst.2016.362] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Three different lots of a residual Ziegler-Natta catalyst slurry (bearing Ti and Mg) obtained from an industrial petrochemical plant were employed as sources for the photocatalyst supported on silica. The effect of additional magnesium (1.0-25.0 wt% Mg/SiO2) on the photocatalytic properties of the doped materials was investigated. Doping the titania-based photocatalyst with Mg results in a shift in the absorption threshold toward the visible spectrum. The optical band gap energy of the bare supported photocatalyst was in the range of 2.5 eV and shifted to 1.72 eV after 25 wt% Mg doping. The systems were evaluated for the photodegradation of one dye (rhodamine B (RhB)) and two drugs (paracetamol and diclofenac sodium) either under ultraviolet (UV) (365 nm - UVA) or visible radiation, separately. Among the evaluated systems, doping with 25 wt% Mg afforded the highest degradation values for the target molecules under UV and visible radiation (i.e. 87%, 60% and 55% of the RhB, paracetamol and diclofenac under UV, respectively, and 82%, 48.3% and 48% under visible irradiation, respectively).
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Affiliation(s)
- William Leonardo da Silva
- Departamento de Engenharia Química, Universidade Federal do Rio Grande do Sul, Rua Eng. Luis Englert s/n, 90040-040 Porto Alegre, RS, Brazil
| | - Marla Azário Lansarin
- Departamento de Engenharia Química, Universidade Federal do Rio Grande do Sul, Rua Eng. Luis Englert s/n, 90040-040 Porto Alegre, RS, Brazil
| | - João Henrique Z Dos Santos
- Instituto de Química - Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves no 9500, 91501-970 Porto Alegre, Brazil E-mail:
| | - Fernando Silveira
- Braskem S.A., Centro de Inovação e Tecnologia - Plantas Piloto, PP1, III Pólo Petroquímico, Via Oeste, Lote 05, 95853-000 Triunfo, RS, Brazil
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16
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Zheng L, Pi F, Wang Y, Xu H, Zhang Y, Sun X. Photocatalytic degradation of Acephate, Omethoate, and Methyl parathion by Fe3O4@SiO2@mTiO2 nanomicrospheres. JOURNAL OF HAZARDOUS MATERIALS 2016; 315:11-22. [PMID: 27152972 DOI: 10.1016/j.jhazmat.2016.04.064] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 04/20/2016] [Accepted: 04/25/2016] [Indexed: 05/21/2023]
Abstract
A novel magnetic mesoporous nanomicrospheres Fe3O4@SiO2@mTiO2 were synthetized and characterized by a series of techniques including FE-TEM, EDS, FE-SEM, PXRD, XPS, BET, TGA as well as VSM, and subsequently tested as a photocatalyst for the degradation of Acephate, Omethoate, and Methyl parathion under UV irradiation. The well-designed nanomicrospheres exhibit a pure and highly crystalline anatase TiO2 layer, large specific surface area, and high-magnetic-response. Photocatalytic degradation of the three organophosphorus pesticides (OPPs) and the formation intermediates were identified using HPLC, TOC-Vcpn, IC, pH meter and GC-MS. Acephate, Omethoate, and Methyl parathion disappeared after 45min, 45min, and 80min UV illumination, respectively. At the end of the treatment, the total organic carbon (TOC) of the OPPs was reduced 80-85%. The main mineralization products were SO4(2-), NO3(-) and PO4(3-) and Omethoate additionally formed NO2(-). Based on the results, we proposed the photocatalytic degradation pathways for Acephate, Omethoate, and Methyl parathion.
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Affiliation(s)
- Lingling Zheng
- State Key Laboratory of Food Science and Technology, School of Food Science of Jiangnan University, School of Food Science Synergetic Innovation Center of Food Safety and Quality Control, Wuxi, Jiangsu 214122, China.
| | - Fuwei Pi
- State Key Laboratory of Food Science and Technology, School of Food Science of Jiangnan University, School of Food Science Synergetic Innovation Center of Food Safety and Quality Control, Wuxi, Jiangsu 214122, China
| | - Yifan Wang
- State Key Laboratory of Food Science and Technology, School of Food Science of Jiangnan University, School of Food Science Synergetic Innovation Center of Food Safety and Quality Control, Wuxi, Jiangsu 214122, China
| | - Hui Xu
- Key Laboratory of Healthy & Intelligent Kitchen System Integration, Ningbo, Zhejiang 315336, China
| | - Yinzhi Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science of Jiangnan University, School of Food Science Synergetic Innovation Center of Food Safety and Quality Control, Wuxi, Jiangsu 214122, China
| | - Xiulan Sun
- State Key Laboratory of Food Science and Technology, School of Food Science of Jiangnan University, School of Food Science Synergetic Innovation Center of Food Safety and Quality Control, Wuxi, Jiangsu 214122, China.
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17
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Le Cunff J, Tomašić V, Wittine O. Photocatalytic degradation of the herbicide terbuthylazine: Preparation, characterization and photoactivity of the immobilized thin layer of TiO2/chitosan. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2015.04.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Hong GB, Chang CT. Study on particulates and volatile organic compounds removal with TiO2 nonwoven filter prepared by electrospinning. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2014; 64:738-742. [PMID: 25039206 DOI: 10.1080/10962247.2014.889614] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
UNLABELLED In this study, polyvinyl alcohol (PVA) and titania (TiO2) Degussa P-25 were mixed to generate TiO2 nonwoven filters using electrospinning. The wires of titanium dioxide and the nonwoven binding titania nanofibers were formed using 14 kV voltage and a distance of 15 cm. A single-factor experimental method was used to investigate the effects of parameters such as initial concentration, retention time, and light source on acetone removal by nonwoven binding titania nanofibers. Furthermore, the effects of parameters such as gas pressure, particle size, initial concentration, and retention time on the removal of particulates were also assessed. The results showed that the degradation efficiency increased with decreasing initial concentrations and increasing retention time. The best operational conditions during this study for the removal of acetone using the TiO2 nonwoven filters were a retention time of 100 sec, initial acetone concentration of 250 ppm, and ultraviolet (UV) light source of 254 nm. Under those conditions, 99% acetone removal efficiency was obtained. In addition, 90% particulate matter removal efficiency was reached when the particulate size was greater than 200 nm and the reaction time was longer than 5 minutes. The prepared TiO2/nanofiber has good performance for volatile organic compounds (VOCs) and particulate removal at the same time. IMPLICATIONS In this study, polyvinyl alcohol (PVA) and titania (TiO2) Degussa P-25 were mixed to generate TiO2 nonwoven filters using electrospinning. The results showed that the optimum operating conditions for the removal of acetone using the TiO2 nonwoven filters were a retention time of 100 sec, initial acetone concentration of 250 ppm, and UV light source of 254 nm. Under those conditions, 99% acetone removal efficiency was obtained.
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19
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Eskandarloo H, Badiei A, Behnajady MA, Ziarani GM. Minimization of electrical energy consumption in the photocatalytic reduction of Cr(vi) by using immobilized Mg, Ag co-impregnated TiO2 nanoparticles. RSC Adv 2014. [DOI: 10.1039/c4ra03418j] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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20
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Khataee A, Khataee A, Fathinia M, Hanifehpour Y, Joo SW. Kinetics and Mechanism of Enhanced Photocatalytic Activity under Visible Light Using Synthesized PrxCd1–xSe Nanoparticles. Ind Eng Chem Res 2013. [DOI: 10.1021/ie402352g] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Alireza Khataee
- Research Laboratory
of Advanced
Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-14766 Tabriz, Iran
| | - Amirreza Khataee
- Research Laboratory
of Advanced
Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-14766 Tabriz, Iran
- Chemical
Engineering Department, Sahand University of Technology, 51335-1996 Tabriz, Iran
| | - Mehrangiz Fathinia
- Research Laboratory
of Advanced
Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-14766 Tabriz, Iran
| | - Younes Hanifehpour
- School of
Mechanical Engineering, Yeungnam University, Gyeongsan 712-749 Korea
| | - Sang Woo Joo
- School of
Mechanical Engineering, Yeungnam University, Gyeongsan 712-749 Korea
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21
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Zhang Q, Jing Y, Shiue A, Chang CT, Ouyang T, Lin CF, Chang YM. Photocatalytic degradation of malathion by TiO₂ and Pt-TiO₂ nanotube photocatalyst and kinetic study. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2013; 48:686-692. [PMID: 23638896 DOI: 10.1080/03601234.2013.778623] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Photocatalytic degradation of malathion, is investigated using Titanium Nanotubes (TNT) and Pt modified TNT (Pt-TNT) photocatalyst in an aqueous solution under 365 nm UV lamp irradiation. The TNT photocatalyst is prepared on pretreated strong alkaline solution via the hydrothermal method. The Pt-TNT was prepared by light deposition. The variations in morphology, formation mechanism, phase structure, and pore structure of TNT and Pt-TNT are characterized using UV-Vis, transmission electron microscopy (TEM), and N₂ adsorption/desorption isotherm analyzer, respectively. The effect of the initial malathion concentration, reaction temperature, catalyst loading, solution pH value, irradiation time and Pt loading are studied and the optimized values are obtained. Moreover, the photodegradation performance and kinetics of malathion onto TNT and Pt-TNT are also examined with the aid of model analysis by kinetic data. The results show that under acid conditions, the performance of photocatalysts for treating malathion is high. The time of complete degradation increases with an increase in the initial malathion concentration. The degradation rate decreases with increasing initial malathion concentration. The degradation efficiency can reach 100% under acid conditions for any initial malathion concentration when the reaction time is 70 min. In addition, experimental decoloration kinetics data follow the pseudo-first-order reaction model.
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Affiliation(s)
- Qian Zhang
- Graduate Institute of Environmental Engineering, National Taiwan University, Taiwan
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