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Wei X, Naraginti S, Yang X, Xu X, Li J, Sun J, Liu Z, Pei J. A novel magnetic AgVO 3/rGO/CuFe 2O 4 hybrid catalyst for efficient hydrogen evolution and photocatalytic degradation. ENVIRONMENTAL RESEARCH 2023; 229:115948. [PMID: 37105284 DOI: 10.1016/j.envres.2023.115948] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/08/2023] [Accepted: 04/18/2023] [Indexed: 05/21/2023]
Abstract
A superior semiconductor material with efficient charge separation and easy reuse could be a promising route for efficient photocatalytic hydrogen evolution and pollutant degradation. AgVO3 is one of the best visible light active materials which has attracted much attention for several biological and environmental applications. In the aim of enhancing its stability and recyclability a novel AgVO3/rGO/CuFe2O4 heterojunction was prepared by hydrothermal method for hydrogen generation (H2) and 4-nitrophenol (4-NP) degradation as well. The composite was well characterized by XRD, SEM, HR-TEM, XPS and VSM. The morphological images suggested the rod shaped AgVO3 and irregular shaped CuFe2O4 are unevenly distributed on reduced graphene oxide (rGO) layers. The hydrogen evolution results indicated that the composite showed around 8.937 mmol g-1h-1 of H2 generation which was ∼2.3 times and ∼9.2 times higher than pure AgVO3 (3.895 mmol g-1h-1) and CuFe2O4 (0.96 mmol g-1h-1) respectively. The 4-NP degradation efficiency of the prepared composite was observed as 94.7% (k = 0.01841 min-1) which is much higher than the AgVO3 (66.3%) and CuFe2O4 (38.2%) after 4 h of irradiation. The higher efficiency could be attributed to the heterojunction formation and faster charge separation. The radical trapping results indicated that the •OH, O2•- and photogenerated h+ are the main species responsible for efficient activity. The AgVO3/rGO/CuFe2O4 heterojunction showed 49.6 emu/g of saturation magnetization and confirms that it could be easily separated with an external magnet, and showed 85.3% of degradation efficiency even after 6 recycles which indicated its higher stability and recyclability. Thus, our study provides new insight into hydrogen generation and phenol degradation using AgVO3 based recyclable composites.
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Affiliation(s)
- Xueyu Wei
- School of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, PR China
| | - Saraschandra Naraginti
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, PR China.
| | - Xiaofan Yang
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, PR China.
| | - Xiaoping Xu
- School of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, PR China
| | - Jiyuan Li
- School of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, PR China
| | - Junwei Sun
- School of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, PR China
| | - Zhigang Liu
- Ningbo Water Environment Group Co Ltd, Ningbo, 315041, PR China
| | - Jiang Pei
- College of Environment, Hohai University, Nanjing, 210098, PR China
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Xu P, Zhang L, Jia X, Wen H, Wang X, Yang S, Hui J. A novel heterogeneous catalyst NH 2-MIL-88/PMo 10V 2 for the photocatalytic activity enhancement of benzene hydroxylation. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01056e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In this work, heterogeneous catalyst NH2-MIL-88/PMo10V2-3 has shown the high hydroxylation activity of benzene under visible light (a 5 W LED), which mainly attributed to the production of hydroxyl radical(˙OH) and V5+/V4+ redox pair in the existence of electron (e−).
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Affiliation(s)
- PanPan Xu
- School of Materials and Chemical Engineering, Zhong yuan University of Technology, Zhengzhou, 450007, PR China
| | - Liuxue Zhang
- School of Materials and Chemical Engineering, Zhong yuan University of Technology, Zhengzhou, 450007, PR China
| | - Xu Jia
- School of Materials and Chemical Engineering, Zhong yuan University of Technology, Zhengzhou, 450007, PR China
| | - Hao Wen
- School of Materials and Chemical Engineering, Zhong yuan University of Technology, Zhengzhou, 450007, PR China
| | - Xiulian Wang
- School of Energy and Environment, Zhong yuan University of Technology, Zhengzhou, 450007, PR China
| | - Suqing Yang
- School of Materials and Chemical Engineering, Zhong yuan University of Technology, Zhengzhou, 450007, PR China
| | - Juxian Hui
- School of Materials and Chemical Engineering, Zhong yuan University of Technology, Zhengzhou, 450007, PR China
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