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Li D, Zhang W, Huang Y, Feng H, Wang Z, Yang Z, Chen J, Zhang X, Zhang G, Chen Y. Visible light-induced catalytic performance of composite photocatalyst synthesized with nanomaterials WO 3 and two-dimensional ultrathin g-C 3N 4. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 88:1910-1925. [PMID: 37831004 PMCID: wst_2023_313 DOI: 10.2166/wst.2023.313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
To improve the visible light-induced catalytic activities of Ultrathin g-C3N4 (UCN), a promising photocatalyst WO3/UCN (WU) was synthesized. Its visible light-driven photocatalysis performance was controllable by adjusting the theoretical mass ratio of WO3/UCN. We have calibrated the optimal preparation conditions to be: WO3/UCN ratio as 1:1, the stirring time of the UCN and sodium tungstate mixture as 9 h and the volume of concentrated hydrochloric acid as 6 mL which was poured into the mixture solution with an extra stirring time of 1.5 h. The optimal photocatalyst WUopt had porous and wrinkled configurations. Its light absorption edge was 524 nm while that of UCN was 465 nm. The band gap of WUopt was 2.13 eV, 0.3 eV less than that of UCN. Therefore, the recombination rate of photo-generated electron-hole pairs of WUopt reduced significantly. The removal rate of WUopt on RhB was 97.3%. By contrast, the removal rate of UCN was much lower (53.4%). WUopt retained a high RhB removal rate, it was 5.5% lower than the initial one after being reused for five cycles. The photodegradation mechanism was facilitated through the strong oxidation behaviors from the active free radicals ·O2-, ·OH and h+ generated by WUopt under the visible light irradiation.
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Affiliation(s)
- Dongmei Li
- Guangdong University of Technology, Guangzhou, Guangdong 510006, China E-mail:
| | - Wenxin Zhang
- Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Yi Huang
- Guangzhou Design Institute Group Co., Ltd, Guangzhou 510620, China
| | - Haoxuan Feng
- Affiliated High School of South China Normal University, Guangzhou, Guangdong 510630, China
| | - Zilin Wang
- Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Zhuohong Yang
- Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Jingkai Chen
- Guangdong Ocean University, Zhanjiang, Guangdong 524088, China
| | - Xueqiang Zhang
- Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Gangyi Zhang
- Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Yanbing Chen
- Guangdong University of Technology, Guangzhou, Guangdong 510006, China
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Shang S, Yang H, Shi D, Dong B, Zhang H, Cheng Q, Pan Z. Construction of LZU1@WO 3 heterojunction photocatalysts: enhanced photocatalytic performance and mechanism insight. NEW J CHEM 2021. [DOI: 10.1039/d1nj03073f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Our well-designed nano-WO3@LZU1 composite photocatalysts were fully characterized. Under simulated sunlight, the hybrid materials showed much higher photocatalytic activity for BBR degradation and MB degradation than WO3 or LZU1, and improved hydrogen production capacity.
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Affiliation(s)
- Simin Shang
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, P. R. China
| | - Huaizhi Yang
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, P. R. China
| | - Dajun Shi
- Three Gorges Public Inspection and Testing Center, Yichang, P. R. China
| | - Bowen Dong
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, P. R. China
| | - Heling Zhang
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, P. R. China
| | - Qingrong Cheng
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, P. R. China
| | - Zhiquan Pan
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, P. R. China
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