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Linh NXD, Hanh NT, Cuong LM, Huong NT, Ha NTT, Trinh TD, Van Noi N, Cam NTD, Pham TD. Facile Fabrication of α-Fe2O3/g-C3N4 Z Scheme Heterojunction for Novel Degradation of Residual Tetracycline. Top Catal 2022. [DOI: 10.1007/s11244-022-01751-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zhang X, Xie X, Li J, Han D, Ma Y, Fan Y, Han D, Niu L. Type II Heterojunction Formed between {010} or {012} Facets Dominated Bismuth Vanadium Oxide and Carbon Nitride to Enhance the Photocatalytic Degradation of Tetracycline. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:14770. [PMID: 36429488 PMCID: PMC9690978 DOI: 10.3390/ijerph192214770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 10/27/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
Both type II and Z schemes can explain the charge transfer behavior of the heterojunction structure well, but the type of heterojunction structure formed between bismuth vanadium oxide and carbon nitride still has not been clarified. Herein, we rationally prepared bismuth vanadium oxide with {010} and {012} facets predominantly and carbon nitride as a decoration to construct a core-shell structure with bismuth vanadium oxide wrapped in carbon nitride to ensure the same photocatalytic reaction interface. Through energy band establishment and radical species investigation, both {010} and {012} facets dominated bismuth vanadium oxide/carbon nitride composites exhibit the type II heterojunction structures rather than the Z-scheme heterojunctions. Furthermore, to investigate the effect of type II heterojunction, the photocatalytic tetracycline degradations were performed, finding that {010} facets dominated bismuth vanadium oxide/carbon nitride composite demonstrated the higher degradation efficiency than that of {012} facets, due to the higher conduction band energy. Additionally, through the free radical trapping experiments and intermediate detection of degradation products, the superoxide radical was proven to be the main active radical to decompose the tetracycline molecules. Therein, the tetracycline molecules were degraded to water and carbon dioxide by dihydroxylation-demethylation-ring opening reactions. This work investigates the effect of crystal planes on heterojunction types through two different exposed crystal planes of bismuth vanadate oxide, which can provide some basic research and theoretical support for the progressive and controlled synthesis of photocatalysts with heterojunction structures.
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Affiliation(s)
- Xiaojing Zhang
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
| | - Xianglun Xie
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
| | - Jianan Li
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
| | - Dongfang Han
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
| | - Yingming Ma
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
| | - Yingying Fan
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
| | - Dongxue Han
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of Psychoactive Substances Monitoring and Safety, Anti-Drug Technology Center of Guangdong Province, Guangzhou 510230, China
| | - Li Niu
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of Psychoactive Substances Monitoring and Safety, Anti-Drug Technology Center of Guangdong Province, Guangzhou 510230, China
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Sun J, Rong Y, Hou Y, Tu L, Wang Q, Mo Y, Zheng S, Li Z, Li Z, Yu Z. Synchronous removal of tetracycline and copper (II) over Z‑scheme BiVO 4/rGO/g-C 3N 4 photocatalyst under visible-light irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:19148-19164. [PMID: 34709549 DOI: 10.1007/s11356-021-16996-4] [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: 08/10/2021] [Accepted: 10/07/2021] [Indexed: 06/13/2023]
Abstract
The combined pollution of heavy metals and organic pollutants in water body has become one of vital environmental issues. Herein, a series of BiVO4/rGO/g-C3N4 nanocomposites were synthesized for concurrent removals of organic pollutant and heavy metal. Results showed that using the optimized photocatalyst BiVO4/rGO/g-C3N4-28, tetracycline (TC) removal of 87.3% and copper (Cu (II)) removal of 90.6% were achieved under visible-light irradiation within 3 h, respectively; much higher than those using BiVO4 and g-C3N4. More importantly, synergistic effect of TC and Cu (II) removals occurred on the surface of BiVO4/rGO/g-C3N4 in the TC-Cu (II) coexistence condition. Additionally, the ·OH and ·O2- were the most important active species for TC oxidation, while photogenerated electrons were the most responsible for Cu (II) reduction. Results of various characterizations and electron spin resonance test demonstrated that BiVO4/rGO/g-C3N4 was a Z-scheme photocatalyst. Based on the identified intermediates, possible degradation pathways and mechanisms for photocatalytic degradation of TC were proposed. This study advances the development and mechanism of photocatalysts for collaborative removal of pollutants.
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Affiliation(s)
- Jiangli Sun
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Yiyuan Rong
- Guangxi Open University, Nanning, 530022, China
| | - Yanping Hou
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China.
- Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials; MOE Key Laboratory of New Processing Technology for Non-Ferrous Metals and Materials, Nanning, 530004, China.
- The National Enterprise Technology Center of Guangxi, Bossco Environmental Protection Technology Co, Ltd, Nanning, 530007, China.
| | - Lingli Tu
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Qingyu Wang
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Yuying Mo
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Shuxuan Zheng
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Zan Li
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Zuji Li
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Zebin Yu
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
- Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials; MOE Key Laboratory of New Processing Technology for Non-Ferrous Metals and Materials, Nanning, 530004, China
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Hu C, Tian M, Wu L, Chen L. Enhanced photocatalytic degradation of paraben preservative over designed g-C 3N 4/BiVO 4 S-scheme system and toxicity assessment. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 231:113175. [PMID: 35007828 DOI: 10.1016/j.ecoenv.2022.113175] [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: 10/05/2021] [Revised: 12/24/2021] [Accepted: 01/05/2022] [Indexed: 06/14/2023]
Abstract
Paraben preservatives have been listed as emerging pollutants due to their ubiquity in various environmental matrices, especially the water bodies. How to efficiently and practically eliminate these paraben pollutants is therefore of great importance. Herein, a designed S-scheme heterojunction photocatalyst, consisting of graphitic carbon nitride (g-C3N4) and monoclinic bismuth vanadate (BiVO4), was fabricated by a facile hydrothermal synthesis and employed to treat benzyl-paraben (BzP). TEM and XPS analysis testified the intimate interaction between g-C3N4 and BiVO4, and the consequently smoothed interfacial charge transfer rendered the feasible recombination of the photoexcited electrons (from BiVO4) and holes (from g-C3N4). The as-established S-scheme system enabled the left g-C3N4 electrons and BiVO4 holes to maintain the high redox abilities and accelerated the charge separation concurrently. In particular, the g-C3N4/BiVO4 composite generated much higher photocurrent response as compared with pure g-C3N4 and BiVO4, highlighting the improved separation of photoinduced charges. Therefore, under visible light and natural solar light irradiation, the g-C3N4/BiVO4 composite showed the significantly enhanced photocatalytic degradation of BzP, which was further optimized with 5 wt% g-C3N4 in the composite. According to the Mott-Schottky plots and identified active species, the mechanism of the g-C3N4/BiVO4 S-scheme heterojunction system was illustrated. In addition, during the photocatalytic degradation process, the acute toxicity of the reaction solutions on zebrafish embryos was notably reduced. In conclusion, the demonstrated strategy to enhance the photocatalytic performance by designing S-scheme heterostructure may provide more insights into the development of high-efficiency photocatalyst towards the solar energy utilization and environmental treatment. Furthermore, photocatalytic degradation had been proved to be an efficient method for eliminating the ecological risk of paraben pollutants, warranting more attention in future work.
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Affiliation(s)
- Chenyan Hu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430072, China
| | - Maosheng Tian
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430072, China
| | - Liqing Wu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430072, China
| | - Lianguo Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
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Thanh Tung MH, Cuong LM, Thu Phuong TT, Van Hoang C, Thu Hien TT, Bich Huong NT, Ha Thanh PT, Van Quan P, Thu Phuong NT, Pham TD, Dieu Cam NT. Construction of Ag decorated on InVO4/g-C3N4 for novel photocatalytic degradation of residual antibiotics. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2021.122643] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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