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Ferdous Anik MJ, Mim SR, Swapno SS, Munira S, Roy O, Billah MM. Vacancy induced enhanced photocatalytic activity of nitrogen doped CuO NPs synthesized by Co-precipitation method. Heliyon 2024; 10:e27613. [PMID: 38533010 PMCID: PMC10963243 DOI: 10.1016/j.heliyon.2024.e27613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 02/27/2024] [Accepted: 03/04/2024] [Indexed: 03/28/2024] Open
Abstract
The chemical co-precipitation method, an effective approach in the synthesis of nanomaterials, was used to synthesize CuO nanoparticles (NPs). Structural and morphological modification of undoped and nitrogen (N) doped CuO nanoparticles were studied thoroughly using X-ray diffraction (XRD), FT-IR and field emission scanning electron microscope (FE SEM). Doping effect on defects was investigated using X-ray photoelectron spectroscopy (XPS), Raman spectroscopy and photoluminescence (PL) spectroscopy. Thus, the effect of doping on crystallinity, crystallite size, strain induced in lattice, defects and electron-hole recombination rate were investigated. Optical band gap was calculated using Kubelka-Munk function from the diffuse reflectance spectra (DRS) obtained using ultraviolet visible (UV-Vis) spectroscopy. Finally, photocatalytic performance was studied from rhodamine B (Rh B) degradation and reaction kinetics were analyzed. Maximum degradation efficiency was obtained for 1.0 mol% N doped CuO NPs which also exhibited minimum band gap and lowest electron-hole recombination rate. For the optimum doping concentration, nitrogen was found to create oxygen vacancies while substituting oxygen in the lattice, and thus reduce electron-hole recombination rate and increase photocatalytic degradation rate effectively.
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Affiliation(s)
| | | | - Syed Sammo Swapno
- Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka-1000, Bangladesh
| | - Sirajum Munira
- Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka-1000, Bangladesh
| | - Oishy Roy
- Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka-1000, Bangladesh
| | - Md Muktadir Billah
- Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka-1000, Bangladesh
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2
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Elmehdi HM, Ramachandran K, Chidambaram S, Mani GT, Pandiaraj S, Alqarni SA, Daoudi K, Gaidi M. Diode characteristics, piezo-photocatalytic antibiotic degradation and hydrogen production of Ce 3+ doped ZnO nanostructures. CHEMOSPHERE 2024; 350:141015. [PMID: 38154676 DOI: 10.1016/j.chemosphere.2023.141015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/27/2023] [Accepted: 12/19/2023] [Indexed: 12/30/2023]
Abstract
Piezo-photocatalysis of ZnO nanostructures had recently well attracted due to their exceptional potential in degrading the antibiotics and scalable hydrogen production. Here, we have synthesized the Ce3+ doped ZnO nanospheres in a facile wet chemical strategy. Dopant ions induced morphological evolution and optical bandgap tuning had observed in our experiment. Optical absorbance spectrum had confirmed the bandgap shortening occurs with Ce3+ doped ZnO specimens. The bandgap gap value had reduced to 2.82 eV from 3.05eV confirming the visible light responsivity of ZnO nano specimens. Obtained Zn(1-x)CexO nanospheres were utilized to fabricate the p-Si/n- Zn(1-x)CexO heterojunction diodes as well studied the improved electrical conductivity for the Ce3+ specimen-based diodes. Besides, ideality factor and barrier height values of the heterojunction diodes ZnO/p-Si, Zn0.99Ce0.01O/p-Si, Zn0.97Ce0.03O/p-Si, and Zn0.95Ce0.05O/p-Si are 15.97 & 0.43 eV, 15.47 & 0.44 eV, 8.02 & 0.46 eV and 5.21 & 0.47 eV, respectively. Direct sunlight assisted piezo-photocatalytic tetracycline (TC) degradation efficiency of ZnO, Zn0.99Ce0.01O, Zn0.97Ce0.03O, and Zn0.95Ce0.05O nanostructures respectively are 64%, 69%, 74% and 82%. We have produced the hydrogen quantity of 1234 μ mol h-1, 1490 μ mol h-1, 1750 μ mol h-1 and 1980 μ mol h-1 with 0%, 1%, 3% and 5% Ce3+ doped ZnO specimens under the direct sunlight assisted piezo-photocatalytic H2 production from H2S splitting.
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Affiliation(s)
- Hussein M Elmehdi
- Department of Applied Physics and Astronomy, College of Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates.
| | - Krithikadevi Ramachandran
- Centre for Advanced Materials Research, Research Institute of Sciences and Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates; University College of Engineering, BIT Campus, Tiruchirappalli, Tamilnadu, India
| | - Siva Chidambaram
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, 603203, India.
| | | | - Saravanan Pandiaraj
- Department of Self-Development Skills, CFY Deanship, King Saud University, Riyadh 11451, Saudi Arabia
| | | | - Kais Daoudi
- Department of Applied Physics and Astronomy, College of Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates; Centre for Advanced Materials Research, Research Institute of Sciences and Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Mounir Gaidi
- Department of Applied Physics and Astronomy, College of Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates; Centre for Advanced Materials Research, Research Institute of Sciences and Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates
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Annam Renita A, Sathish S, Kumar PS, Prabu D, Manikandan N, Mohamed Iqbal A, Rajesh G, Rangasamy G. Emerging aspects of metal ions-doped zinc oxide photocatalysts in degradation of organic dyes and pharmaceutical pollutants - A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118614. [PMID: 37454449 DOI: 10.1016/j.jenvman.2023.118614] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/18/2023]
Abstract
In recent periods, a broad assortment of continual organic contaminants has been released into our natural water resources. Indeed, it is exceedingly poisonous and perilous to living things; thus, the elimination of these organic pollutants before release into the water bodies is vital. A variety of techniques have been utilized to remove these organic pollutants with advanced oxidation photocatalytic methods with zinc oxide (ZnO) nanoparticles being commonly used as a capable catalyst for contaminated water treatment. Nevertheless, its broad energy gap, which can be only stimulated under an ultraviolet (UV) light source, and high recombination pairs of electrons and holes limit their photocatalytic behaviors. However, numerous methods have been suggested to decrease its energy gap for visible regions. Including, the doping ZnO with metal ions (dopant) can be considered as an effectual route not only the reason for a movement of the absorption edges toward the higher (visible light) region but also to lower the electron-hole pair (e--h+) recombination. This review concentrated on the impact of dissimilar types of metal ions (dopants) on the advancement in the degradation performance of ZnO. So, this work demonstrates a vital review of contemporary attainments in the alteration of ZnO nanoparticles for organic pollutants eliminations. Besides, the effect of doping ions including transition metals, rare earth metals, and metal ions (substitutional and interstitial) concerning numerous types of altered ZnO are summarized. The photodegradation mechanisms for pristine and metal-modified ZnO nanoparticles are also conferred.
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Affiliation(s)
- A Annam Renita
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 119, India
| | - S Sathish
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 119, India
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603 110, Tamil Nadu, India; Department of Biotechnology Engineering and Food Technology, Chandigarh University, Mohali 140413, India.
| | - D Prabu
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 119, India
| | - N Manikandan
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 119, India
| | - A Mohamed Iqbal
- Department of Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, 119, India
| | - G Rajesh
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603 110, Tamil Nadu, India
| | - Gayathri Rangasamy
- School of Engineering, Lebanese American University, Byblos, Lebanon; Department of Sustainable Engineering, Institute of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
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Mondal S, Ayon SA, Islam MS, Rana MS, Billah MM. Morphological evaluation and boosted photocatalytic activity of N-doped ZnO nanoparticles prepared via Co-precipitation method. Heliyon 2023; 9:e20948. [PMID: 37876471 PMCID: PMC10590957 DOI: 10.1016/j.heliyon.2023.e20948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/10/2023] [Accepted: 10/11/2023] [Indexed: 10/26/2023] Open
Abstract
Pristine and nitrogen (N) doped zinc oxide (ZnNxO1-x, x = 0, 0.005, 0.01, and 0.02) nanoparticles (NPs) were successfully synthesized using chemical co-precipitation approach. The formation of pure crystalline wurtzite ZnO phase without any second phase during N-doping was confirmed by X-ray diffraction (XRD) analysis of N-doped ZnO samples. X-ray photoelectron spectroscopic (XPS) analysis ensured the effective inclusion of nitrogen into ZnO matrix. The morphological analysis revealed the formation of nanorods as a result of N-doping. The optical band gap calculated from UV-vis spectroscopy was observed to decrease up to 1 mol.% N doping followed by a subtle increase. Photoluminescence (PL) spectra revealed that electron-hole recombination was the least for 1 mol.% N doped ZnO NPs. ZnN0.01O0.99 NPs showed superior photocatalytic activity among all samples due to rod-shaped NPs and reduced electron-hole recombination, which was accessed by the photodegradation of Rhodamine B (RhB).
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Affiliation(s)
- Sudipta Mondal
- Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
- School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Sikder Ashikuzzaman Ayon
- Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Md Saiful Islam
- Department of Nanomaterials and Ceramic Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
| | - Md Shahjalal Rana
- Department of Nanomaterials and Ceramic Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
| | - Md Muktadir Billah
- Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
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Dien ND, Thu Ha PT, Vu XH, Trang TT, Thanh Giang TD, Dung NT. Developing efficient CuO nanoplate/ZnO nanoparticle hybrid photocatalysts for methylene blue degradation under visible light. RSC Adv 2023; 13:24505-24518. [PMID: 37593668 PMCID: PMC10427893 DOI: 10.1039/d3ra03791f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 08/02/2023] [Indexed: 08/19/2023] Open
Abstract
CuO/ZnO nanocomposites with different components can overcome the drawbacks of previously used photocatalysts owing to their promotion in charge separation and transportation, light absorption, and the photo-oxidation of dyes. In this study, CuO nanoplates were synthesized by the hydrothermal method, while ZnO nanoparticles were fabricated by the precipitation method. A series of CuO/ZnO nanocomposites with different ZnO-to-CuO weight ratios, namely, 2 : 8, 4 : 6, 5 : 5, 6 : 4, and 8 : 2 were obtained via a mixing process. X-ray diffraction patterns confirmed the presence of hexagonal wurtzite ZnO and monoclinic CuO in the synthesized CuO/ZnO nanocomposites. Scanning electron microscopy showed the dispersion of ZnO nanoparticles on the surface of CuO nanoplates. Ultraviolet-visible absorption spectra exhibited a slight red-shift in the absorption edge of binary oxides relative to pure ZnO or CuO. All samples were employed for the photocatalytic degradation of methylene blue (MB) under visible light irradiation. The composite samples exhibited enhanced photocatalytic performance compared with pristine CuO or ZnO. This study aimed to examine the effect of the ZnO-to-CuO weight ratio on their photocatalytic performance. The results indicated that among all the synthesized nanocomposites and pristine oxides, the nanocomposite with ZnO and CuO in a proportion of 4 : 6 shows the highest photodegradation activity for the removal of MB with 93% MB photodegraded within 60 min at an initial MB concentration of 5 ppm. The photocatalytic kinetic data were described well by the pseudo-first-order model with a high correlation coefficient of 0.95. The photocatalytic mechanism of the mixed metal oxide was proposed and discussed in detail. The photodegradation characteristic of CuO/ZnO nanostructures is valuable for methylene blue degradation from aqueous solutions as well as environmental purification in various fields.
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Affiliation(s)
- Nguyen Dac Dien
- Faculty of Occupational Safety and Health, Vietnam Trade Union University 169 Tay Son Street, Dong Da district Ha Noi city 100000 Vietnam
| | - Pham Thi Thu Ha
- Faculty of Chemistry, TNU-University of Sciences Tan Thinh ward Thai Nguyen city 24000 Vietnam
| | - Xuan Hoa Vu
- Institute of Science and Technology, TNU-University of Sciences Tan Thinh ward Thai Nguyen city 24000 Vietnam
| | - Tran Thu Trang
- Institute of Science and Technology, TNU-University of Sciences Tan Thinh ward Thai Nguyen city 24000 Vietnam
| | - Trinh Duc Thanh Giang
- Dao Duy Tu High School Chu Van An road, Hoang Van Thu ward Thai Nguyen city 24000 Vietnam
| | - Nguyen Thi Dung
- Institute of Science and Technology, TNU-University of Sciences Tan Thinh ward Thai Nguyen city 24000 Vietnam
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Yadav S, Rani N, Saini K. Coupling ZnO with CuO for efficient organic pollutant removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:71984-72008. [PMID: 36414902 DOI: 10.1007/s11356-022-24139-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 11/06/2022] [Indexed: 06/14/2023]
Abstract
Fabrication of heterojunction semiconductors for the photodegradation of toxic organic dyes under sunlight exposure has earned significant recognition from researchers nowadays. On that account, we have synthesized and explored a comparative photodegradation study of ZnO/CuO nanocomposite with ZnO and CuO nanoparticles. ZnO and CuO nanoparticles have been synthesized by biosynthesis methods using Ficus benghalensis leaf extract. As-synthesized ZnO and CuO nanoparticles have been further utilized for the synthesis of ZnO/CuO nanocomposite by the mortar pestle crushing/milling method. Both biosynthesis methods and mortar pestle crushing/milling methods are simple, low-cost, and environmentally friendly. Structural, optical, and morphological analysis of all the synthesized nanomaterials have been done by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET), field emission scanning electron microscopy (FESEM), energy-dispersive spectroscopy (EDS), fourier transform infrared spectroscopy (FTIR), and UV-visible spectroscopy. PXRD data reveal that synthesized ZnO nanoparticles are in the hexagonal wurtzite phase, CuO nanoparticles in the monoclinic phase, and ZnO/CuO nanocomposite in the hexagonal wurtzite as well as in monoclinic phase. FE-SEM and TEM images of ZnO/CuO nanocomposite reveal the nanorod-shaped morphology along with micro-sized and nano-sized flakes. The BET analysis shows the surface areas 18.128 m2/g for ZnO nanoparticles, 16.653 m2/g for CuO nanoparticles, and 19.580 m2/g for ZnO/CuO nanocomposite, respectively. The energy band gap values of ZnO/CuO nanocomposite are obtained 3.13 eV for ZnO and 2.76 eV for CuO, respectively. The photocatalytic behaviors of all the synthesized nanomaterials are examined against aqueous dye solutions of methylene blue (MB), rhodamine B (RhB), and methyl orange (MO) under sunlight irradiation. The results reveal that the photocatalytic degradation efficiency of ZnO/CuO nanocomposite has been found higher than with ZnO and CuO nanoparticles for all the dyes. Also, all the synthesized nanomaterials indicate higher photocatalytic degradation efficiency for methylene blue dye among all three dyes. The kinetics of photodegradation of all the dye solutions has also been investigated in the presence of ZnO, CuO, and ZnO/CuO photocatalysts separately. The results exhibit that rate constant values for all the dyes are higher with ZnO/CuO nanocomposite than with ZnO and CuO nanoparticles. ZnO/CuO nanocomposite demonstrates degradation efficiency for MB dye 99.13%, for RhB 80.21%, and for MO 67.22% after 180 min of sunlight exposure. ZnO/CuO nanocomposite and ZnO and CuO nanoparticles also show the best reusability and stability up to three cycles for photocatalytic degradation of MB dyes among all the dyes. Therefore, green synthesized ZnO/CuO nanocomposite could be used as an efficient photocatalyst for the degradation of various toxic dyes. The mineralization of different dyes using ZnO/CuO nanocomposite has been examined by FTIR analysis. Furthermore, the mineralization of MB dye has been done by total organic carbon (TOC) measurements.
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Affiliation(s)
- Sapna Yadav
- Department of Chemistry, Miranda House, University of Delhi, Patel Chest Marg, New Delhi, 110007, India
| | - Nutan Rani
- Department of Chemistry, Miranda House, University of Delhi, Patel Chest Marg, New Delhi, 110007, India
| | - Kalawati Saini
- Department of Chemistry, Miranda House, University of Delhi, Patel Chest Marg, New Delhi, 110007, India.
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Selvakumar D, Sonu KP, Ramadoss G, Sivaramakrishnan R, Jayavel R, Eswaramoorthy M, Venkateswara Rao K, Pugazhendhi A. Heterostructures of polyaniline and Ce-ZnO nanomaterial coated flexible PET thin films for LPG gas sensing at standard environment. CHEMOSPHERE 2023; 314:137492. [PMID: 36481170 DOI: 10.1016/j.chemosphere.2022.137492] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 11/20/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
The n-type Ce doped ZnO (Ce-ZnO) and p-type polyaniline (PANI) heterojunction were successfully synthesized via simple chemical solution method for sensing liquefied petroleum gas (LPG) at standard environment. The morphology and structures of as-prepared Ce-ZnO & PANI nanoparticles were analyzed by numerous kinds of techniques. Ce-ZnO & PANI nanoparticles were mixed with n-methylpyrrolidone (NMP) which is coated over the gold coated PET electrode by doctor blade method and dried overnight at 60 °C to form p-n junction. The as-formed p-n junction is to be driven with the help of 1.5 V potential at ambient temperature. X-ray photoelectron spectroscopy results of Ce-ZnO nanoparticles confirmed the existence of Ce4+ and the improved amount of both chemisorbed oxygen and oxygen vacancy after the formation of Ce-ZnO heterojunction. The maximum response of 80% was realized for hollow Ce-ZnO/PANI sensor at 100 ppm. The proposed material is a novel candidate to detect the LPG even at low (30) ppm and this study reveals the possibility of developing a potentially inexpensive hollow Ce-ZnO/PANI sensor for sensing LPG efficiently.
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Affiliation(s)
- D Selvakumar
- Department of ECE, KPR Institute of Engineering and Technology, Coimbatore, 641407, India; Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, 560064, India.
| | - K P Sonu
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, 560064, India
| | - G Ramadoss
- School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, 613401, India
| | - R Sivaramakrishnan
- Laboratory of Cyanobacterial Biotechnology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - R Jayavel
- Centre for Nanoscience and Technology, Anna University, Chennai, 600 025, India
| | - M Eswaramoorthy
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, 560064, India
| | - K Venkateswara Rao
- Centre for Nano Science and Technology, JNT University Hyderabad, Kukatpally, 500085, Telangana, India
| | - A Pugazhendhi
- School of Engineering, Lebanese American University, Byblos, Lebanon; University Centre for Research & Development, Department of Civil Engineering, Chandigarh University, Mohali, India.
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8
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Enhancing the Photocatalytic Performance of BaSn-based Composites by Doping Rare Metals. E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY 2022. [DOI: 10.1380/ejssnt.2023-017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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9
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ROS-mediated antibacterial response of ZnO and ZnO containing cerium under light. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02390-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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10
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Jasrotia R, Prakash J, Kumar G, Verma R, Kumari S, Kumar S, Singh VP, Nadda AK, Kalia S. Robust and sustainable Mg 1-xCe xNi yFe 2-yO 4 magnetic nanophotocatalysts with improved photocatalytic performance towards photodegradation of crystal violet and rhodamine B pollutants. CHEMOSPHERE 2022; 294:133706. [PMID: 35066082 DOI: 10.1016/j.chemosphere.2022.133706] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 01/09/2022] [Accepted: 01/18/2022] [Indexed: 06/14/2023]
Abstract
This study aims at manufacturing Ce3+/Ni2+ ions doped Mg nanoferrites by the sol-gel method for the photocatalytic degradation of rhodamine B and crystal violet pollutants under visible natural sunlight. The particle size of synthesized nanoferrites was calculated through XRD, Hall-William plots, and TEM analysis, which perfectly agree with each other. FTIR study investigated the existence of stretching vibrations in M - O (metal-oxygen) complexes at the tetrahedral (A-site) and octahedral sites (B-site). The Raman spectra of synthesized nanophotocatalysts show the presence of four vibrational modes (Eg + 2T2g + A1g), providing suitable information of occupancy of Mg2+, Ce3+, Ni2+, and Fe3+ ions at the interstitial sites of undoped and Ce3+/Ni2+ doped MgFe2O4 crystal structure. The synthesized MGF3 nanophotocatalyst performs well with degradation of 97.674% crystal violet (CV) and 90.05% rhodamine B (RhB) under natural sunlight in 60 min. The experimental results showed that doped MgFe2O4 nanoferrites have a high tendency to photodegrade the RhB and CV dyes in an aqueous form. The pseudo-first-order equation reflects the best photocatalytic process kinetics and studied the feasibility of RhB and CV dyes adsorption on the doped and undoped MgFe2O4 nanoferrites. The results show good support for adsorption by the spontaneous photodegradation process. The excellent photocatalytic activity of synthesized nanoferrites under natural sunlight verifies them as a potential candidate for the photodegradation of organic dyes. Finally, the antibacterial activity of magnetic nanoferrites was examined against S. aureus and E. Coli. The studies demonstrated that synthesized magnetic nanoferrites were more effective against S. aureus.
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Affiliation(s)
- Rohit Jasrotia
- School of Physics and Materials Science, Shoolini University, Bajhol, Solan, H.P, India; Himalayan Centre of Excellence in Nanotechnology, Shoolini University, Bajhol, Solan, H.P, India.
| | - Jyoti Prakash
- School of Physics and Materials Science, Shoolini University, Bajhol, Solan, H.P, India
| | - Gagan Kumar
- Department of Physics, Chandigarh University, Gharuan, Punjab, 140413, India
| | - Ritesh Verma
- School of Physics and Materials Science, Shoolini University, Bajhol, Solan, H.P, India; Himalayan Centre of Excellence in Nanotechnology, Shoolini University, Bajhol, Solan, H.P, India
| | - Swati Kumari
- School of Biotechnology, Shoolini University, Bajhol, Solan, H.P., India
| | - Sachin Kumar
- Department of Chemistry, Guru Nanak Dev University, Amritsar, 143005 India
| | - Virender Pratap Singh
- Department of Physics, Govt. Degree College, Nadaun, Hamirpur, Himachal Pradesh, India
| | - Ashok K Nadda
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, Solan, India
| | - Susheel Kalia
- Department of Chemistry, ACC Wing, Indian Military Academy, Dehradun, Uttarakhand, 248007, India.
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Pandiyarajan T, Mangalaraja RV, Karthikeyan B, Udayabhaskar R, Contreras D, Sepulveda-Guzman S, Gracia-Pinilla MA. Influence of RE (Pr 3+, Er 3+, Nd 3+) doping on structural, vibrational and enhanced persistent photocatalytic properties of ZnO nanostructures. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 268:120679. [PMID: 34894563 DOI: 10.1016/j.saa.2021.120679] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/27/2021] [Accepted: 11/26/2021] [Indexed: 06/14/2023]
Abstract
Rare earth (RE- Pr, Er and Nd) doped ZnO nanostructures were prepared through simple wet chemical precipitation route. The RE doping induced interesting morphological transition from spherical to flower like structures were analyzed. The X-ray diffraction (XRD) measurements revealed that the prepared materials were of highly crystalline in nature and RE dopant ions did not altered the crystal structure of ZnO. The microstrain of ZnO was altered with respect to the nature of dopants. In the case of the Pr doped ZnO, X-ray photoelectron spectroscopy (XPS) analysis confirmed that the dopant (Pr) ions successfully substituted in the ZnO lattice. Raman spectra revealed RE doping induced lower energy side shift and variation in intensity of the peaks related to the characteristic phonon modes of ZnO. In the case of Nd doped ZnO nanostructures, dopant induced suppression in classical Raman modes and evolution of multiphonon related modes were identified. Optical diffuse reflectance spectral (DRS) measurements, along with the characteristic excitonic band of ZnO, other bands associated to the transitions of 4f energy levels related to the RE ions were observed. The partially filled 4f orbitals led to the enhanced photocatalytic activity in RE doped ZnO nanostructures. The observed enhanced photocatalytic activity in RE doped ZnO when compared to bare ZnO was discussed. The decolorization efficiency of MB ensued the following order 96 > 94 > 86 > 78% for ZnErO, ZnNdO, ZnPrO and ZnO, respectively.
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Affiliation(s)
- T Pandiyarajan
- Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, University of Concepcion, Chile; Department of Sciences, Indian Institute of Information Technology Design and Manufacturing Kurnool, Andhra Pradesh 518007, India.
| | - R V Mangalaraja
- Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, University of Concepcion, Chile.
| | - B Karthikeyan
- Department of Physics, National Institute of Technology, Tiruchirappalli 620 015, India
| | - R Udayabhaskar
- Hybrid Nanomaterials Laboratory (HNL), Institute of Scientific and Technological Research (IDICTEC), University of Atacama, Copayapu 485, Copiapo, Chile
| | - David Contreras
- Departament of Analytical and Inorganic Chemistry, Faculty of Chemical Sciences, Centre for Biotechnology, University of Concepcion, Chile
| | - Selene Sepulveda-Guzman
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ingeniería Mecánica y Eléctrica, FIME, Ave. Pedro de Alba s/n, Ciudad Universitaria, C.P.66455 San Nicolás de los Garza, N.L., Mexico
| | - M A Gracia-Pinilla
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Físico-Matemáticas, Av. Universidad, Cd. Universitaria, San Nicolás de los Garza, NL, Mexico; Centro de Investigación en Innovación y Desarrollo en Ingeniería y Tecnología, Universidad Autónoma de Nuevo León, PIIT, Apodaca, Nuevo León 66600, Mexico
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12
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Ayon SA, Hasan S, Billah MM, Nishat SS, Kabir A. Improved luminescence and photocatalytic properties of Sm3+-doped ZnO nanoparticles via modified sol-gel route: A unified experimental and DFT+U approach. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2022.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Ahmadi S, Kalaee M, Moradi O, Nosratinia F, Abdouss M. Synthesis of novel zeolitic imidazolate framework (ZIF-67) – zinc oxide (ZnO) nanocomposite (ZnO@ZIF-67) and potential adsorption of pharmaceutical (tetracycline (TCC)) from water. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132013] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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14
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Mondal K, Islam M, Singh S, Sharma A. Fabrication of High Surface Area Microporous ZnO from ZnO/Carbon Sacrificial Composite Monolith Template. MICROMACHINES 2022; 13:mi13020335. [PMID: 35208458 PMCID: PMC8879774 DOI: 10.3390/mi13020335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 02/05/2023]
Abstract
Fabrication of porous materials from the standard sacrificial template method allows metal oxide nanostructures to be produced and have several applications in energy, filtration and constructing sensing devices. However, the low surface area of these nanostructures is a significant drawback for most applications. Here, we report the synthesis of ZnO/carbon composite monoliths in which carbon is used as a sacrificial template to produce zinc oxide (ZnO) porous nanostructures with a high specific surface area. The synthesized porous oxides of ZnO with a specific surface area of 78 m2/g are at least one order of magnitude higher than that of the ZnO nanotubes reported in the literature. The crucial point to achieving this remarkable result was the usage of a novel ZnO/carbon template where the carbon template was removed by simple heating in the air. As a high surface area porous nanostructured ZnO, these synthesized materials can be useful in various applications including catalysis, photocatalysis, separation, sensing, solar energy harvest and Zn-ion battery and as supercapacitors for energy storage.
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Affiliation(s)
- Kunal Mondal
- Department of Chemical Engineering, Indian Institute of Technology, Kanpur 208016, Uttar Pradesh, India;
- Materials Science and Engineering Department, Energy and Environment Science and Technology Directorate, Idaho National Laboratory, Idaho Falls, ID 83415, USA
- Correspondence: (K.M.); (A.S.)
| | - Monsur Islam
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany;
| | - Srujan Singh
- Department of Chemical Engineering, Indian Institute of Technology, Kanpur 208016, Uttar Pradesh, India;
| | - Ashutosh Sharma
- Department of Chemical Engineering, Indian Institute of Technology, Kanpur 208016, Uttar Pradesh, India;
- Correspondence: (K.M.); (A.S.)
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15
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Degradation of rhodamine B photocatalyzed by Eu-doped CdS nanowires illuminated by visible radiation. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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16
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Cerium-, Europium- and Erbium-Modified ZnO and ZrO2 for Photocatalytic Water Treatment Applications: A Review. Catalysts 2021. [DOI: 10.3390/catal11121520] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
In the last decades photocatalysis has become one of the most employed technologies for the implementation of the so-called Advanced Oxidation Processes (AOPs) for the removal of harmful pollutants from wastewaters. The materials identified as the best photocatalysts are transition metal oxides, in which the band structure allows charge carrier separation upon solar irradiation. The photoinduced charge carrier can thus cause oxidative and reductive redox reactions at the surface, inducing the formation of the radical species able to initiate the AOPs. Despite the great advantages of this process (non-toxic, cheap and environmentally clean), the main drawback lies in the fact that the most efficient semiconductors are only able to absorb UV irradiation, which accounts for only 5% of the total solar irradiation at the Earth’s surface and not enough to generate the required amount of electron-hole pairs. On the other hand, many efforts have been devoted to the sensitization of wide band gap transition metal oxides to visible light, which represents a higher percentage (almost 45%) in the solar electromagnetic spectrum. Among all the strategies to sensitize transition metal oxides to visible irradiation, doping with lanthanides has been less explored. In this regard, lanthanides offer a unique electronic configuration, consisting in 4f orbitals shielded by a 5s5p external shell. This occurrence, coupled with the different occupation of the localized 4f orbitals would provide an astounding opportunity to tune these materials’ properties. In this review we will focus in depth on the modification of two promising photocatalytic transition metal oxides, namely ZnO and ZrO2, with cerium, europium and erbium atoms. The aim of the work is to provide a comprehensive overview of the influence of lanthanides on the structural, optical and electronic properties of the modified materials, emphasizing the effect of the different 4f orbital occupation in the three considered doping atoms. Moreover, a large portion of the discussion will be devoted to the structural-properties relationships evidencing the improved light absorption working mechanism of each system and the resulting enhanced photocatalytic performance in the abatement of contaminants in aqueous environments.
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17
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Jayswal S, Moirangthem RS. Fabrication of hierarchical hybrid ZnO/Au micro-/nanostructures for efficient dye degradation: role of gold nanostructures in photophysical process. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127555] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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19
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Minh LH, Thuy Thu PT, Thanh BQ, Hanh NT, Thu Hanh DT, Van Toan N, Hung CM, Van Duy N, Van Tong P, Hoa ND. Hollow ZnO nanorices prepared by a simple hydrothermal method for NO 2 and SO 2 gas sensors. RSC Adv 2021; 11:33613-33625. [PMID: 35497546 PMCID: PMC9042311 DOI: 10.1039/d1ra05912b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 10/08/2021] [Indexed: 12/02/2022] Open
Abstract
Chemoresistive gas sensors play an important role in detecting toxic gases for air pollution monitoring. However, the demand for suitable nanostructures that could process high sensing performance remains high. In this study, hollow ZnO nanorices were synthesized by a simple hydrothermal method to detect NO2 and SO2 toxic gases efficiently. Material characterization by some advanced techniques, such as scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and Raman spectroscopy, demonstrated that the hollow ZnO nanorices had a length and diameter size of less than 500 and 160 nm, respectively. In addition, they had a thin shell thickness of less than 30 nm, formed by an assembly of tiny nanoparticles. The sensor based on the hollow ZnO nanorices could detect low concentration of NO2 and SO2 gasses at sub-ppm level. At an optimum operating temperature of 200 °C, the sensor had response values of approximately 15.3 and 4.8 for 1 ppm NO2 and 1 ppm SO2, respectively. The sensor also exhibited good stability and selectivity, suggesting that the sensor can be applied to NO2 and SO2 toxic gas detection in ambient air. Hollow ZnO nanorices with an ultrathin shell show excellent response to NO2 and SO2 gases.![]()
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Affiliation(s)
- Luu Hoang Minh
- Department of Physics, Faculty of Mechanical Engineering, National University of Civil Engineering (NUCE) No. 55, Giai Phong Str. Hanoi Vietnam .,International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST) No. 1, Dai Co Viet Hanoi Vietnam
| | - Pham Thi Thuy Thu
- Department of Physics, Faculty of Mechanical Engineering, National University of Civil Engineering (NUCE) No. 55, Giai Phong Str. Hanoi Vietnam
| | - Bui Quang Thanh
- Department of Physics, Faculty of Mechanical Engineering, National University of Civil Engineering (NUCE) No. 55, Giai Phong Str. Hanoi Vietnam
| | - Nguyen Thi Hanh
- Department of Physics, Faculty of Mechanical Engineering, National University of Civil Engineering (NUCE) No. 55, Giai Phong Str. Hanoi Vietnam
| | - Do Thi Thu Hanh
- Department of Physics, Faculty of Mechanical Engineering, National University of Civil Engineering (NUCE) No. 55, Giai Phong Str. Hanoi Vietnam
| | - Nguyen Van Toan
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST) No. 1, Dai Co Viet Hanoi Vietnam
| | - Chu Manh Hung
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST) No. 1, Dai Co Viet Hanoi Vietnam
| | - Nguyen Van Duy
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST) No. 1, Dai Co Viet Hanoi Vietnam
| | - Pham Van Tong
- Department of Physics, Faculty of Mechanical Engineering, National University of Civil Engineering (NUCE) No. 55, Giai Phong Str. Hanoi Vietnam
| | - Nguyen Duc Hoa
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST) No. 1, Dai Co Viet Hanoi Vietnam
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20
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Islam MR, Saiduzzaman M, Nishat SS, Kabir A, Farhad S. Synthesis, characterization and visible light-responsive photocatalysis properties of Ce doped CuO nanoparticles: A combined experimental and DFT+U study. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126386] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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21
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Photo induced mechanistic activity of GO/Zn(Cu)O nanocomposite against infectious pathogens: Potential application in wound healing. Photodiagnosis Photodyn Ther 2021; 34:102291. [PMID: 33862280 DOI: 10.1016/j.pdpdt.2021.102291] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/26/2021] [Accepted: 04/09/2021] [Indexed: 11/23/2022]
Abstract
Treating infection causing microorganisms is one of the major challenges in wound healing. These may gain resistance due to the overuse of conventional antibiotics. A promising technique is antimicrobial photodynamic therapy (aPDT) used to selectively cause damage to infectious pathogenic cells via generation of reactive oxygen species (ROS). We report on biocompatable nanomaterials that can serve as potential photosensitizers for aPDT. GO/Zn(Cu)O nanocomposite was synthesized by co-precipitation method. Graphene Oxide (GO) is known for its high surface to volume ratio, excellent surface functionality and enhanced antimicrobial property. ZnO nanoparticle induces the generation of reactive oxygen species (ROS) under light irradiation and it leads to recombination of electron-hole pair. Nanocomposites of GO and Cu doped ZnO increases visible light absorption and enhances the photocatalytic property. It generates more ROS and increases the bacterial inhibition. GO/Zn(Cu)O nanocomposite was tested against Staphylococcus aureus (S. aureus), Enterococcus faecium (E. faecium), Escherichia coli (E. coli), Salmonella typhi (S. typhi), Shigella flexneri (S. flexneri) and Pseudomonas aeruginosa (P. aeruginosa) by well diffusion method, growth curve, colony count, biofilm formation under both dark and visible light condition. Reactive Oxygen Species assay (ROS), Lactate dehydrogenase leakage (LDH) assay, Protein estimation assay and membrane integrity study proves the mechanism of inhibition of bacteria. Inhibition kinetics shows the sensitivity between bacteria and GO/Zn(Cu)O nanocomposite.
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22
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Aluminium and cerium co-doped ZnO nanoparticles: Facile and inexpensive synthesis and visible light photocatalytic performances. J RARE EARTH 2021. [DOI: 10.1016/j.jre.2019.11.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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D'Souza JN, Prabhu A, Nagaraja GK, Navada K M, Kouser S, Manasa DJ. Unravelling the human triple negative breast cancer suppressive activity of biocompatible zinc oxide nanostructures influenced by Vateria indica (L.) fruit phytochemicals. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 122:111887. [PMID: 33641895 DOI: 10.1016/j.msec.2021.111887] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 12/25/2020] [Accepted: 01/09/2021] [Indexed: 01/17/2023]
Abstract
The present study delineates the biosynthesis of ZnOVI nanostructures by using aqueous fruit extract of V. indica. The study has disclosed the role of V. indica fruit extract as both reducing and capping agents, ushering the formation of ZnOVI nanostructures with distinct morphologies. The formation of ZnOVI nanostructures was corroborated by FT-IR and UV-visible spectroscopy which was further substantiated by the elemental composition study through EDS spectroscopy. The nanostructures were also investigated by Rietveld refinement of PXRD data, FE-SEM, and BET analysis. The morphology, size, and surface area were found to be precursor stoichiometry dependent. The in-vitro cytotoxicity study of ZnOVI nanostructures carried out on MDA-MB468 human triple-negative breast cancer (TNBC) cells has revealed their potential cytotoxicity (91.18 ± 1.98). MTT assay performed on the NIH3T3 mouse fibroblast cells has unfolded the non-toxic nature of ZnOVI nanostructures. Additionally, the results of the AO-EB dual staining assay indicated early apoptosis in TNBC cells by displaying greenish yellow-fluorescence in the nuclei. Reactive oxygen species (ROS) measurement study has confirmed the elevated intracellular levels of ROS, supporting the oxidative-stress induced cytotoxicity in ZnOVI nanostructures treated TNBC cells. Furthermore, the haemocompatibility of ZnOVI nanostructures was evaluated using human erythrocytes. Thus, the obtained results have shown greater potential in the anticancer activity of bio-fabricated ZnOVI nanostructures.
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Affiliation(s)
- Josline Neetha D'Souza
- Department of Chemistry, Mangalore University, Mangaloagangothri 574199, Karnataka, India
| | - Ashwini Prabhu
- Yenepoya Research Centre, Yenepoya (Deemed to be University), Deralakatte 575018, Karnataka, India
| | - G K Nagaraja
- Department of Chemistry, Mangalore University, Mangaloagangothri 574199, Karnataka, India.
| | - Meghana Navada K
- Department of Chemistry, Mangalore University, Mangaloagangothri 574199, Karnataka, India
| | - Sabia Kouser
- Department of Chemistry, Mangalore University, Mangaloagangothri 574199, Karnataka, India
| | - D J Manasa
- Department of Botany, Davanagere University, Davanagere 577007, Karnataka, India
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24
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Kardeş M, Başaran Dindaş G, Yatmaz HC, Dizge N, Öztürk K. CBD grown pure and Ce-doped ZnO nanorods: Comparison of their photocatalytic degrading efficiencies on AR88 azo dye under visible light irradiation. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125451] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Nithya R, Ragupathy S, Sakthi D, Arun V, Kannadasan N. A study on Mn doped ZnO loaded on CSAC for the photocatalytic degradation of brilliant green dye. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137769] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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In-Depth Structural and Optical Analysis of Ce-modified ZnO Nanopowders with Enhanced Photocatalytic Activity Prepared by Microwave-Assisted Hydrothermal Method. Catalysts 2020. [DOI: 10.3390/catal10050551] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Pure and Ce-modified ZnO nanosheet-like polycrystalline samples were successfully synthesized by a simple and fast microwave-based process and tested as photocatalytic materials in environmental remediation processes. In an attempt to clarify the actual relationships between functionality and atomic scale structure, an in-depth characterization study of these materials using a battery of complementary techniques was performed. X-ray diffraction (XRD), field emission-scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HRTEM), high-angle annular dark field-scanning transmission electron microscopy (HAADF-STEM), energy-dispersive X-Ray spectroscopy-scanning transmission electron microscopy (STEM-XEDS), photoluminescence spectroscopy (PL) and UV–Visible absorption spectroscopy were used to evaluate the effect of Ce ions on the structural, morphological, optical and photocatalytic properties of the prepared ZnO nanostructures. The XRD results showed that the obtained photocatalysts were composed of hexagonal, wurtzite type crystallites in the 34–44 nm size range. The SEM and TEM showed nanosheet-shaped crystallites, a significant fraction of them in contact with bundles of randomly oriented and much smaller nanoparticles of a mixed cerium–zinc phase with a composition close to Ce0.68Zn0.32Ox. Importantly, in clear contrast to the prevailing proposals regarding this type of materials, the STEM-XEDS characterization of the photocatalyst samples revealed that Ce did not incorporate into the ZnO crystal lattice as a dopant but that a heterojunction formed between the ZnO nanosheets and the Ce–Zn mixed oxide phase nanoparticles instead. These two relevant compositional features could in fact be established thanks to the particular morphology obtained by the use of the microwave-assisted hydrothermal synthesis. The optical study revealed that in the ZnO:Ce samples optical band gap was found to decrease to 3.17 eV in the samples with the highest Ce content. It was also found that the ZnO:Ce (2 at.%) sample exhibited the highest photocatalytic activity for the degradation of methylene blue (MB), when compared to both the pure ZnO and commercial TiO2-P25 under simulated sunlight irradiation. The kinetics of MB photodegradation in the presence of the different photocatalysts could be properly described using a Langmuir–Hinshelwood (LH) model, for which the ZnO:Ce (2 at.%) sample exhibited the highest value of effective kinetic constant.
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27
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Ahmad I, Shoaib Akhtar M, Ahmed E, Ahmad M, Keller V, Qamar Khan W, Khalid N. Rare earth co-doped ZnO photocatalysts: Solution combustion synthesis and environmental applications. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116328] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Saad AM, Abukhadra MR, Abdel-Kader Ahmed S, Elzanaty AM, Mady AH, Betiha MA, Shim JJ, Rabie AM. Photocatalytic degradation of malachite green dye using chitosan supported ZnO and Ce-ZnO nano-flowers under visible light. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 258:110043. [PMID: 31929075 DOI: 10.1016/j.jenvman.2019.110043] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 12/19/2019] [Accepted: 12/25/2019] [Indexed: 05/18/2023]
Abstract
Two types of chitosan-based composites (chitosan/ZnO and chitosan/Ce-ZnO composites) were synthesized under microwave irradiation and characterized as advanced catalysts of enhanced photocatalytic activity under the visible light. The morphological investigation reflected the formation of ZnO and Ce doped ZnO at stunning micro flowers of nano limps. Additionally, the optical studies reflected a reduction in the bandgap of ZnO from 3.3 eV to 2.85 eV and 2.5 eV after supporting it onto chitosan chains and after doping it with cerium, respectively. The synthetic composites were applied in photocatalytic removal of malachite green dye under a visible light source. The synthetic CH/ZnO and CH/Ce-ZnO showed enhancement in the photocatalytic removal of M.G by 54% and 87%, respectively, as compared to the pure ZnO. The synthetic composites are of high stability and can be reused for five photocatalytic degradation cycles at stunning removal percentages. The main oxidizing radicals during the removal of M.G by CH/ZnO are the generated electron-hole pairs as well as the hydroxyl radicals. The effective species in CH/Ce-ZnO photocatalytic system are the photogenerated hydroxyl radicals followed by the electron-hole pairs.
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Affiliation(s)
- Alaa Magdy Saad
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Mostafa R Abukhadra
- Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.
| | | | - Ali M Elzanaty
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Amr H Mady
- Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt; School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea
| | - Mohamed A Betiha
- Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt; Egypt Nanotechnology Center (EGNC), Cairo University, El-Shiekh Zayed, 12588, Egypt
| | - Jae-Jin Shim
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea.
| | - Abdelrahman M Rabie
- Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt; School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea.
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29
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Surisa Sa-nguanprang, Phuruangrat A, Thongtem T, Thongtem S. Visible-Light-Driven Photocatalysis of Gd-Doped ZnO Nanoparticles Prepared by Tartaric Acid Precipitation Method. RUSS J INORG CHEM+ 2020. [DOI: 10.1134/s0036023619120143] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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Narsimha K, Babu MS, Anuradha N, Guda S, Kumar BK, Mallesh D, Upender G, Reddy PM, Kumar BV. Preparation and characterization of CdWO 4:Cu nanorods with enhanced photocatalytic performance under sunlight irradiation. NEW J CHEM 2020. [DOI: 10.1039/c9nj05763c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The objective of this work is to convert an ultraviolet active photocatalyst to a visible active photocatalyst and investigate the effect of copper (Cu2+) doping on the morphology and photocatalytic activity of CdWO4.
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Affiliation(s)
- Kura Narsimha
- Nanomaterials and Catalysis Research Laboratory
- Department of Chemistry
- Nizam College
- Osmania University
- Hyderabad-01
| | - M. Shekar Babu
- Nanomaterials and Catalysis Research Laboratory
- Department of Chemistry
- Nizam College
- Osmania University
- Hyderabad-01
| | - N. Anuradha
- Nanomaterials and Catalysis Research Laboratory
- Department of Chemistry
- Nizam College
- Osmania University
- Hyderabad-01
| | - Swarupa Guda
- Nanomaterials and Catalysis Research Laboratory
- Department of Chemistry
- Nizam College
- Osmania University
- Hyderabad-01
| | - B. Kranthi Kumar
- Nanomaterials and Catalysis Research Laboratory
- Department of Chemistry
- Nizam College
- Osmania University
- Hyderabad-01
| | - D. Mallesh
- Indian Institute of Chemical Technology
- Hyderabad
- India
| | - G. Upender
- Department of Physics
- Nizam College
- Osmania University
- Hyderabad-01
- India
| | - P. Muralidhar Reddy
- Nanomaterials and Catalysis Research Laboratory
- Department of Chemistry
- Nizam College
- Osmania University
- Hyderabad-01
| | - B. Vijaya Kumar
- Nanomaterials and Catalysis Research Laboratory
- Department of Chemistry
- Nizam College
- Osmania University
- Hyderabad-01
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31
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Wen J, Guo H, Ma X, Wei Z, He X, Zhang L, Li B, Wang T, Cheng Y. Mesoporous Ce-doped ZnO hollow microspheres for oxidation of 1,2-dichlorobenzene. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00272k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ZnCe5 microspheres exhibited excellent activity in o-DCB oxidation due to the enhanced reducibility and high concentration of surface active oxygen.
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Affiliation(s)
- Jiaxin Wen
- School of Energy and Environmental Engineering
- Hebei University of Technology
- Tianjin
- China
| | - Haiwei Guo
- School of Energy and Environmental Engineering
- Hebei University of Technology
- Tianjin
- China
| | - Xiaodong Ma
- School of Energy and Environmental Engineering
- Hebei University of Technology
- Tianjin
- China
| | - Zizhang Wei
- Tianjin Academy of Eco-Environmental Sciences
- Tianjin Ecology and Environment Bureau
- Tianjin
- China
| | - Xu He
- School of Energy and Environmental Engineering
- Hebei University of Technology
- Tianjin
- China
| | - Longlong Zhang
- Handan Purification Equipment Research Institute
- China State Shipbuilding Corporation
- China
| | - Bodong Li
- Handan Purification Equipment Research Institute
- China State Shipbuilding Corporation
- China
| | - Tao Wang
- Handan Purification Equipment Research Institute
- China State Shipbuilding Corporation
- China
| | - Yanhu Cheng
- Handan Purification Equipment Research Institute
- China State Shipbuilding Corporation
- China
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32
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Shen Z, Zhang Q, Yin C, Kang S, Jia H, Li X, Li X, Wang Y, Cui L. Facile synthesis of 3D flower-like mesoporous Ce-ZnO at room temperature for the sunlight-driven photocatalytic degradations of RhB and phenol. J Colloid Interface Sci 2019; 556:726-733. [PMID: 31499443 DOI: 10.1016/j.jcis.2019.08.111] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 08/27/2019] [Accepted: 08/29/2019] [Indexed: 10/26/2022]
Abstract
A 3D flower-like mesoporous Ce doped ZnO composite composed of nanosheets was prepared by a facile, one-step wet chemical method at room temperature. It was found that the moderate Ce doping can improve the light absorption of ZnO. The photocatalytic activities of the samples were studied by the degradation of Rhodamine B (RhB) and phenol under stimulated sunlight. The 1% mole ratio of Ce doped ZnO composites (denoted as CZ1) showed higher photocatalytic performance than other samples, where 85.1% of RhB and 69.6% of phenol can be removed within 125 min and 120 min, respectively. The Ce4+ doped in the lattice of ZnO can act as the electron trapping sites, which effectively improve the electron-hole separation. In addition, it was also found the annealing temperature had effect on the morphology and structure of Ce doped ZnO. The photocatalytic performance can be further enhanced at proper annealing temperature (500 °C) due to the increase of ZnO crystallinity with maintained flower-like structure and the formation of CeO2-ZnO heterojunction at their tight interface promoting the separation of photogenerated electron-hole pairs.
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Affiliation(s)
- Zhangfeng Shen
- School of Biological and Chemical Engineering, Jiaxing University, Jiaxing, Zhejiang 314001, PR China
| | - Qiulin Zhang
- School of Biological and Chemical Engineering, Jiaxing University, Jiaxing, Zhejiang 314001, PR China; Department of Environmental Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Chaochuang Yin
- School of Biological and Chemical Engineering, Jiaxing University, Jiaxing, Zhejiang 314001, PR China; Department of Environmental Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Shifei Kang
- Department of Environmental Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Hongyan Jia
- School of Biological and Chemical Engineering, Jiaxing University, Jiaxing, Zhejiang 314001, PR China
| | - Xing Li
- Department of Environmental Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Xi Li
- School of Biological and Chemical Engineering, Jiaxing University, Jiaxing, Zhejiang 314001, PR China
| | - Yangang Wang
- School of Biological and Chemical Engineering, Jiaxing University, Jiaxing, Zhejiang 314001, PR China.
| | - Lifeng Cui
- Department of Environmental Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
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33
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Nanostructured cerium-doped ZnO for photocatalytic degradation of pharmaceuticals in aqueous solution. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.112065] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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34
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Deka Boruah B. Zinc oxide ultraviolet photodetectors: rapid progress from conventional to self-powered photodetectors. NANOSCALE ADVANCES 2019; 1:2059-2085. [PMID: 36131964 PMCID: PMC9416854 DOI: 10.1039/c9na00130a] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 03/28/2019] [Indexed: 05/14/2023]
Abstract
Currently, the development of ultraviolet (UV) photodetectors (PDs) has attracted the attention of the research community because of the vast range of applications of photodetectors in modern society. A variety of wide-band gap nanomaterials have been utilized for UV detection to achieve higher photosensitivity. Specifically, zinc oxide (ZnO) nanomaterials have attracted significant attention primarily due to their additional properties such as piezo-phototronic and pyro-phototronic effects, which allow the fabrication of high-performance and low power consumption-based UV PDs. This article primarily focuses on the recent development of ZnO nanostructure-based UV PDs ranging from nanomaterials to architectural device design. A brief overview of the photoresponse characteristics of UV PDs and potential ZnO nanostructures is presented. Moreover, the recent development in self-powered PDs and implementation of the piezo-phototronic effect, plasmonic effect and pyro-phototronic effect for performance enhancement is highlighted. Finally, the research perspectives and future research direction related to ZnO nanostructures for next-generation UV PDs are summarized.
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Affiliation(s)
- Buddha Deka Boruah
- Institute for Manufacturing, Department of Engineering, University of Cambridge UK CB3 0FS
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35
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Hu B, Sun Q, Zuo C, Pei Y, Yang S, Zheng H, Liu F. A highly efficient porous rod-like Ce-doped ZnO photocatalyst for the degradation of dye contaminants in water. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2019; 10:1157-1165. [PMID: 31293853 PMCID: PMC6604740 DOI: 10.3762/bjnano.10.115] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 05/14/2019] [Indexed: 05/16/2023]
Abstract
A mild and simple method was developed to synthesize a highly efficient photocatalyst comprised of Ce-doped ZnO rods and optimal synthesis conditions were determined by testing samples with different Ce/ZnO molar ratios calcined at 500 °C for 3 hours via a one-step pyrolysis method. The photocatalytic activity was assessed by the degradation of a common dye pollutant found in wastewater, rhodamine B (RhB), using a sunlight simulator. The results showed that ZnO doped with 3% Ce exhibits the highest RhB degradation rate. To understand the crystal structure, elemental state, surface morphology and chemical composition, the photocatalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM) and inductively coupled plasma emission spectroscopy (ICP), respectively. The newly developed, robust, field-only surface integral method was employed to explore the relationship between the remarkable catalytic effect and the catalyst shape and porous microstructure. The computational results showed that the dipole-like field covers the entire surface of the rod-like Ce-doped ZnO photocatalyst and is present over the entire range of wavelengths considered. The optimum degradation conditions were determined by orthogonal tests and range analysis, including the concentration of RhB and catalyst, pH value and temperature. The results indicate that the pH value is the main influential factor in the photocatalytic degradation process and the optimal experimental conditions to achieve the maximum degradation rate of 97.66% in 2 hours are as follows: concentration (RhB) = 10 mg/L, concentration (catalyst) = 0.7 g/L, pH 9.0 and T = 50 °C. These optimum conditions supply a helpful reference for large-scale wastewater degradation containing the common water contaminant RhB.
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Affiliation(s)
- Binjing Hu
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, P.R. China
| | - Qiang Sun
- Particulate Fluids Processing Centre, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), School of Science, RMIT University, Melbourne, VIC 3001, Australia
| | - Chengyi Zuo
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, P.R. China
| | - Yunxin Pei
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, P.R. China
| | - Siwei Yang
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, P.R. China
| | - Hui Zheng
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, P.R. China
| | - Fangming Liu
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, P.R. China
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36
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Sahoo JK, Paikra SK, Mishra M, Sahoo H. Amine functionalized magnetic iron oxide nanoparticles: Synthesis, antibacterial activity and rapid removal of Congo red dye. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.03.033] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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37
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Alam U, Shah TA, Khan A, Muneer M. One-pot ultrasonic assisted sol-gel synthesis of spindle-like Nd and V codoped ZnO for efficient photocatalytic degradation of organic pollutants. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.11.048] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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38
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Marinho JZ, de Paula LF, Longo E, Patrocinio AOT, Lima RC. Effect of Gd3+ doping on structural and photocatalytic properties of ZnO obtained by facile microwave-hydrothermal method. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0359-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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39
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Kim EB, Seo HK. Highly Sensitive Formaldehyde Detection Using Well-Aligned Zinc Oxide Nanosheets Synthesized by Chemical Bath Deposition Technique. MATERIALS 2019; 12:ma12020250. [PMID: 30642105 PMCID: PMC6356531 DOI: 10.3390/ma12020250] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/03/2019] [Accepted: 01/07/2019] [Indexed: 12/20/2022]
Abstract
Detection of formaldehyde is very important in terms of life protection, as it can cause serious injury to eyes, skin, mouth and gastrointestinal function if indirectly inhaled. Researchers are therefore putting effort into developing novel and sensitive devices. In this work, we have fabricated an electro-chemical sensor in the form of a field effect transistor (FET) to detect formaldehyde over a wide range (10 nM to 1 mM). For this, ZnO nanosheets (NS) were first synthesized by hydrothermal method with in-situ deposition on cleaned SiO2/Si (100) substrate. The synthesized materials were characterized for morphology and purity and surface area (31.718 m2/g). The developed device was tested for formaldehyde detection at room temperature that resulted in a linear (96%) and reproducible response with concentration, sensitivity value of 0.27 mA/M/cm2 with an error of ±2% and limit of detection (LOD) as 210 nM.
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Affiliation(s)
- Eun-Bi Kim
- School of Chemical Engineering, Chonbuk National University, Jeonju 54896, Korea.
| | - Hyung-Kee Seo
- School of Chemical Engineering, Chonbuk National University, Jeonju 54896, Korea.
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40
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Sekar AD, Muthukumar H, Chandrasekaran NI, Matheswaran M. Photocatalytic degradation of naphthalene using calcined FeZnO/ PVA nanofibers. CHEMOSPHERE 2018; 205:610-617. [PMID: 29715675 DOI: 10.1016/j.chemosphere.2018.04.131] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 04/18/2018] [Accepted: 04/20/2018] [Indexed: 06/08/2023]
Abstract
Recently, the incorporation of metal oxide nanoparticles into polymers has gained great attention owing to their ample of applications. The green mediated synthesis Fe-doped ZnO nanoparticles have been incorporated into PVA nanofibers through electro spinning for the application of photocatalytic degradation. The PVA polymer concentration was optimized to obtain uniform fibers without beads. The Fe-doped ZnO nanofibers were characterized by various analyzing techniques. The results show that good physicochemical with high surface area, uniformity in fiber with an average diameter ranges from 150 to 300 and 50-200 nm for un-calcined and calcined Fe-doped ZnO nanofiber respectively. The photocatalytic activity of nanofibers was examined by the degradation of naphthalene. The efficiency was observed 96 and 81% for calcined and un-calcined nanofibers, respectively. The reusable efficacy of Fe-doped ZnO calcined nanofiber as a catalyst was studied. These studies corroborated that the calcined Fe-doped ZnO nanofiber as promising material for catalytic applications.
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Affiliation(s)
- Aiswarya Devi Sekar
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, 620 015, India
| | - Harshiny Muthukumar
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, 620 015, India
| | | | - Manickam Matheswaran
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, 620 015, India.
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41
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Saeed M, Muneer M, Mumtaz N, Siddique M, Akram N, Hamayun M. Ag-Co 3 O 4 : Synthesis, characterization and evaluation of its photo-catalytic activity towards degradation of rhodamine B dye in aqueous medium. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2018.02.024] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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42
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Song H, Wu R, Yang J, Dong J, Ji G. Fabrication of CeO2 nanoparticles decorated three-dimensional flower-like BiOI composites to build p-n heterojunction with highly enhanced visible-light photocatalytic performance. J Colloid Interface Sci 2018; 512:325-334. [DOI: 10.1016/j.jcis.2017.10.080] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 10/09/2017] [Accepted: 10/20/2017] [Indexed: 11/24/2022]
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43
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Sahoo JK, Kumar A, Rout L, Rath J, Dash P, Sahoo H. An investigation of heavy metal adsorption by hexa-dentate ligand-modified magnetic nanocomposites. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2017.1406950] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Jitendra Kumar Sahoo
- Department of chemistry, National Institute of Technology (NIT) Rourkela, Odisha, India
| | - Aniket Kumar
- Department of chemistry, National Institute of Technology (NIT) Rourkela, Odisha, India
| | - Lipeeka Rout
- Department of chemistry, National Institute of Technology (NIT) Rourkela, Odisha, India
| | - Juhi Rath
- Institute of Minerals and Materials Technology (IMMT), Odisha, India
| | - Priyabrat Dash
- Department of chemistry, National Institute of Technology (NIT) Rourkela, Odisha, India
| | - Harekrushna Sahoo
- Department of chemistry, National Institute of Technology (NIT) Rourkela, Odisha, India
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44
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Song H, Wu R, Liang Y, Xiong H, Ji G. Facile synthesis of 3D nanoplate-built CdWO4/BiOI heterostructures with highly enhanced photocatalytic performance under visible-light irradiation. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.03.027] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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45
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Saeed M, Siddique M, Usman M, ul Haq A, Khan SG, Raoof HA. Synthesis and Characterization of Zinc Oxide and Evaluation of its Catalytic Activities for Oxidative Degradation of Rhodamine B Dye in Aqueous Medium. ACTA ACUST UNITED AC 2017. [DOI: 10.1515/zpch-2016-0921] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
We herein report the synthesis of zinc oxide and evaluation of its catalytic performance for degradation of Rhodamine B dye in aqueous medium. Sodium hydroxide and zinc acetate dihydrate were used as precursor materials for synthesis of zinc oxide catalyst. X-ray difractometry, Fourier transform infer red spectroscopy, scanning electron microscopy, thermogravimetric and surface area analyses were used as characterization techniques. Catalytic performance of prepared zinc oxide was evaluated for degradation of Rhodamine B dye in aqueous medium. Catalytic degradation of dye was taking place according to Eley-Rideal mechanism which states that oxygen adsorbed at the surface of ZnO reacts with dye in fluid phase. During the reaction, reactive radicals are formed as a result of electron-hole pair formation between conduction and valence band of zinc oxide catalyst which degrade the dye into water and carbon dioxide.
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Affiliation(s)
- Muhammad Saeed
- Department of Chemistry , Government College University Faisalabad , Allama Iqbal Road Faisalabad , Pakistan
| | - Mohsin Siddique
- Department of Chemistry , Bacha Khan University Charsadda , Pakistan
| | - Muhammad Usman
- Department of Chemistry , Government College University Faisalabad , Allama Iqbal Road Faisalabad , Pakistan
| | - Atta ul Haq
- Department of Chemistry , Government College University Faisalabad , Allama Iqbal Road Faisalabad , Pakistan
| | - Samreen Gul Khan
- Department of Chemistry , Government College University Faisalabad , Allama Iqbal Road Faisalabad , Pakistan
| | - Hafiz Abdur Raoof
- Department of Chemistry , Government College University Faisalabad , Allama Iqbal Road Faisalabad , Pakistan
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46
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47
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Chouchene B, Ben Chaabane T, Balan L, Girot E, Mozet K, Medjahdi G, Schneider R. High performance Ce-doped ZnO nanorods for sunlight-driven photocatalysis. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2016; 7:1338-1349. [PMID: 27826508 PMCID: PMC5082445 DOI: 10.3762/bjnano.7.125] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 09/03/2016] [Indexed: 05/24/2023]
Abstract
Ce-doped ZnO (ZnO:Ce) nanorods have been prepared through a solvothermal method and the effects of Ce-doping on the structural, optical and electronic properties of ZnO rods were studied. ZnO:Ce rods were characterized by XRD, SEM, TEM, XPS, BET, DRS and Raman spectroscopy. 5% Ce-doped ZnO rods with an average length of 130 nm and a diameter of 23 nm exhibit the highest photocatalytic activity for the degradation of the Orange II dye under solar light irradiation. The high photocatalytic activity is ascribed to the substantially enhanced light absorption in the visible region, to the high surface area of ZnO:Ce rods and to the effective electron-hole pair separation originating from Ce doping. The influence of various experimental parameters like the pH, the presence of salts and of organic compounds was investigated and no marked detrimental effect on the photocatalytic activity was observed. Finally, recyclability experiments demonstrate that ZnO:Ce rods are a stable solar-light photocatalyst.
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Affiliation(s)
- Bilel Chouchene
- Unité de Recherche Synthèse et Structure de Nanomatériaux UR 11 ES 30. Université de Carthage, Faculté des Sciences de Bizerte, 7021 Jarzouna, Bizerte, Tunisia
| | - Tahar Ben Chaabane
- Unité de Recherche Synthèse et Structure de Nanomatériaux UR 11 ES 30. Université de Carthage, Faculté des Sciences de Bizerte, 7021 Jarzouna, Bizerte, Tunisia
| | - Lavinia Balan
- Institut de Science des Matériaux de Mulhouse (IS2M), CNRS, UMR 7361, 15 rue Jean Starcky, 68093 Mulhouse, France
| | - Emilien Girot
- Université de Lorraine, Laboratoire Réactions et Génie des Procédés (LRGP), UMR 7274, CNRS, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France
| | - Kevin Mozet
- Université de Lorraine, Laboratoire Réactions et Génie des Procédés (LRGP), UMR 7274, CNRS, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France
| | - Ghouti Medjahdi
- Institut Jean Lamour (IJL), Université de Lorraine, CNRS, UMR 7198, CNRS, BP 70239, 54506 Vandoeuvre-lès-Nancy Cedex, France
| | - Raphaël Schneider
- Université de Lorraine, Laboratoire Réactions et Génie des Procédés (LRGP), UMR 7274, CNRS, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France
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48
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Liang Y, Guo N, Li L, Li R, Ji G, Gan S. Facile synthesis of Ag/ZnO micro-flowers and their improved ultraviolet and visible light photocatalytic activity. NEW J CHEM 2016. [DOI: 10.1039/c5nj02388b] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of flower-like Ag/ZnO composites was prepared with varying Ag content. The prepared photocatalyst displays excellent photocatalytic activity for RhB under UV and visible light. Ag/ZnO is a promising candidate material for the treatment of contaminated water.
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Affiliation(s)
- Yimai Liang
- College of Chemistry
- Jilin University
- Changchun 130026
- P. R. China
| | - Na Guo
- College of Chemistry
- Jilin University
- Changchun 130026
- P. R. China
| | - Linlin Li
- College of Chemistry
- Jilin University
- Changchun 130026
- P. R. China
| | - Ruiqing Li
- College of Chemistry
- Jilin University
- Changchun 130026
- P. R. China
| | - Guijuan Ji
- College of Chemistry
- Jilin University
- Changchun 130026
- P. R. China
| | - Shucai Gan
- College of Chemistry
- Jilin University
- Changchun 130026
- P. R. China
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49
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Yue D, Chen D, Lu W, Wang M, Zhang X, Wang Z, Qian G. Enhanced photocatalytic performance and morphology evolvement of PbWO4 dendritic nanostructures through Eu3+ doping. RSC Adv 2016. [DOI: 10.1039/c6ra15045d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Eu3+ ion doping can enhance the photocatalytic activity of PbWO4 dendritic nanostructures and affect the morphology as well.
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Affiliation(s)
- Dan Yue
- State Key Laboratory of Silicon Materials
- Cyrus Tang Center for Sensor Materials and Applications
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
| | - Dong Chen
- The Key Laboratory of Rare Earth Functional Materials and Applications
- Zhoukou Normal University
- Zhoukou 466001
- P. R. China
| | - Wei Lu
- University Research Facility in Materials Characterization and Device Fabrication
- The Hong Kong Polytechnic University
- P. R. China
| | - Mengnan Wang
- The Key Laboratory of Rare Earth Functional Materials and Applications
- Zhoukou Normal University
- Zhoukou 466001
- P. R. China
| | - Xiaoli Zhang
- The Key Laboratory of Rare Earth Functional Materials and Applications
- Zhoukou Normal University
- Zhoukou 466001
- P. R. China
| | - Zhenling Wang
- The Key Laboratory of Rare Earth Functional Materials and Applications
- Zhoukou Normal University
- Zhoukou 466001
- P. R. China
| | - Guodong Qian
- State Key Laboratory of Silicon Materials
- Cyrus Tang Center for Sensor Materials and Applications
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
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50
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Wang Y, Fang HB, Ye RQ, Zheng YZ, Li N, Tao X. Functionalization of ZnO aggregate films via iodine-doping and TiO2 decorating for enhanced visible-light-driven photocatalytic activity and stability. RSC Adv 2016. [DOI: 10.1039/c6ra00903d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A multifunctional visible-light-driven photocatalyst composed of ZnO aggregates film via iodine-doping and TiO2 decorating is developed.
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Affiliation(s)
- Yuan Wang
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Hua-Bin Fang
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Rong-Qin Ye
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Yan-Zhen Zheng
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
- Research Center of the Ministry of Education for High Gravity Engineering & Technology
| | - Nan Li
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Xia Tao
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
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