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Lu S, Zhang J, Wu Z, Su Z, Huang J, Liang Y, Xiao FS. Catalytic Oxidation of Ethyl Lactate to Ethyl Pyruvate over Au-Based Catalyst Using Authentic Air as Oxidant. CATALYSIS SURVEYS FROM ASIA 2022. [DOI: 10.1007/s10563-022-09359-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Preeyanghaa M, Vinesh V, Neppolian B. Construction of S-scheme 1D/2D rod-like g-C 3N 4/V 2O 5 heterostructure with enhanced sonophotocatalytic degradation for Tetracycline antibiotics. CHEMOSPHERE 2022; 287:132380. [PMID: 34600002 DOI: 10.1016/j.chemosphere.2021.132380] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 09/16/2021] [Accepted: 09/25/2021] [Indexed: 06/13/2023]
Abstract
Pharmaceutically active compounds are an emerging water contaminant that resists conventional wastewater treatments. Herein, the sonophotocatalytic degradation of Tetracycline (TC) antibiotics as a model contaminant was carried out over a rod-like g-C3N4/V2O5 (RCN-VO) nanocomposite. RCN-VO nanocomposite was synthesized via ultrasound-assisted thermal polycondensation method. The results showed that the RCN-VO nanocomposite could completely remove the TC in water within 60 min under simultaneous irradiation of visible light and ultrasound. Moreover, the sonophotocatalytic TC degradation (a synergy index of ∼1.5) was superior to the sum of individual sonocatalytic and photocatalytic degradation using RCN-VO nanocomposite. Besides, the enhanced sonophotocatalytic activity of RCN-VO can be attributed to the 1D/2D nanostructure and the S-scheme heterojunction formation between RCN and VO where the electrons migrated from RCN to VO across the RCN-VO interface. Under irradiation, the built-in electric field, band edge bending and Coulomb interaction can synergistically facilitate the unavailing electron-hole pair recombination. Thereby, the cumulative electron in RCN and holes in VO can actively take part in the redox reaction which generates free radicals and attack the TC molecules. This study provides insight into a novel S-Scheme heterojunction photocatalyst for the removal of various refractory contaminants via sonophotocatalytic degradation.
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Affiliation(s)
- Mani Preeyanghaa
- Department of Physics and Nanotechnology, SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India
| | - Vasudevan Vinesh
- Department of Physics and Nanotechnology, SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India
| | - Bernaurdshaw Neppolian
- Department of Physics and Nanotechnology, SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India.
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Chu Y, Yan B, Yang X, Wang S, Cao P, Li T, Yu H, Yin H. Selective Oxidation of Methyl Lactate over Carbon-Supported Noble Metal Catalysts under Base-Free Conditions. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02410] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yuting Chu
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo, Zhejiang 315201, PR China
- Nano Science and Technology Institute, University of Science and Technology of China, 66 Ren’ai Road, Suzhou, Jiangsu 215123, PR China
| | - Bo Yan
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo, Zhejiang 315201, PR China
| | - Xia Yang
- National Institute of Clean-and-Low-Carbon Energy, Future Science City, Changping District, Beijing 102211, PR China
| | - Shiwei Wang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo, Zhejiang 315201, PR China
| | - Peng Cao
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo, Zhejiang 315201, PR China
| | - Tong Li
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo, Zhejiang 315201, PR China
| | - Hongbo Yu
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo, Zhejiang 315201, PR China
| | - Hongfeng Yin
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo, Zhejiang 315201, PR China
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Gu J, Jia H, Ma S, Ye Z, Pan J, Dong R, Zong Y, Xue J. Fe 3O 4-Loaded g-C 3N 4/C-Layered Composite as a Ternary Photocatalyst for Tetracycline Degradation. ACS OMEGA 2020; 5:30980-30988. [PMID: 33324806 PMCID: PMC7726751 DOI: 10.1021/acsomega.0c03905] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 10/21/2020] [Indexed: 06/12/2023]
Abstract
A ternary photocatalyst, Fe3O4-loaded g-C3N4/C-layered composite (g-C3N4/C/Fe3O4) was fabricated by a facile sonication and in situ precipitation technique. Carbon nanosheets were prepared using the remaining non-metallic components of waste printed circuit boards as carbon sources. In this hybrid structure, g-C3N4 was immobilized on the surfaces of carbon nanosheets to form a layered composite, and 10-15 nm Fe3O4 nanoparticles are uniformly deposited on the surface of the composite material. The photocatalytic performance of the catalyst was studied by degrading tetracycline (TC) under simulated sunlight. The results showed that the photoactivity of the g-C3N4/C/Fe3O4 composite to TC was significantly enhanced, and the degradation rate was 10.07 times higher than that of pure g-C3N4, which was attributed to Fe3O4 nanoparticles and carbon nanosheets. Carbon sheets with good conductivity are an excellent electron transporter, which promotes the separation of photogenerated carriers and the Fe3O4 nanoparticles can utilize electrons effectively as a center of oxidation-reduction. Moreover, a possible photocatalytic mechanism for the excellent photocatalytic performance was proposed.
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Affiliation(s)
- Jiandong Gu
- College
of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, PR China
| | - Hailang Jia
- College
of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, PR China
| | - Shuaishuai Ma
- College
of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, PR China
| | - Zhaolian Ye
- College
of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, PR China
- Collaborative
Innovation Center of Atmospheric Environment and Equipment Technology,
Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution
Control (AEMPC), Nanjing University of Information
Science & Technology, Nanjing 210044, China
| | - Junli Pan
- College
of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, PR China
| | - Ruoyu Dong
- College
of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, PR China
| | - Yuqing Zong
- School
of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, PR China
| | - Jinjuan Xue
- School
of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, PR China
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