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Wang Z, Ma Y, Shi Y, Wang S, Gao M, Qiu Y, Li C. Bi2WO6/red phosphorus heterojunction photocatalyst with excellent visible light photodegrading activity. Chem Phys Lett 2023. [DOI: 10.1016/j.cplett.2023.140422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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Deng Y, Xu M, Jiang X, Wang J, Tremblay PL, Zhang T. Versatile iodine-doped BiOCl with abundant oxygen vacancies and (110) crystal planes for enhanced pollutant photodegradation. ENVIRONMENTAL RESEARCH 2023; 216:114808. [PMID: 36379237 DOI: 10.1016/j.envres.2022.114808] [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: 07/20/2022] [Revised: 09/27/2022] [Accepted: 11/11/2022] [Indexed: 06/16/2023]
Abstract
Crystal plane regulation, defect engineering, and element doping can effectively solve the problems of large band gaps, poor light absorption, and fast recombination of BiOCl. In this work, iodine-doped BiOCl (I/BiOCl) nanowafers with abundant (110) crystal planes and oxygen vacancies (OV) were prepared by a simple hydrothermal method and assessed for pollutant photodegradation. I/BiOCl with a molar ratio of I to Cl of 0.6 (I0.6/BiOCl) degraded under visible light 95.8% of the toxic dye rhodamine B and 85.1% of the persistent antibiotic tetracycline in 5 and 10 min, respectively. In comparison, unmodified BiOCl photodegraded only between 42.0% and 48.2% of these critical water pollutants. Furthermore, I0.6/BiOCl was highly stable with most of its photocatalytic activity remaining after 4 cycles. Three reasons explain the excellent photodegradation properties of I0.6/BiOCl. First, the doped photocatalyst grew abundant (110) crystal planes, which inhibits the recombination of photogenerated electron-hole pairs. Second, the large quantity of OV present in I0.6/BiOCl increased active sites for reactive oxygen species generation, improved photogenerated charge separation, and pollutants adsorption. Lastly, I0.6/BiOCl had a modified electronic band structure enhancing light absorption. Overall, these results describe a promising photocatalyst capable of degrading efficiently major pollutants with different structures.
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Affiliation(s)
- Yichao Deng
- School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan, 430070, PR China
| | - Mengying Xu
- School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan, 430070, PR China; Shaoxing Institute for Advanced Research, Wuhan University of Technology, Shaoxing, 312300, PR China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, PR China; School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, PR China
| | - Xiangyang Jiang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, PR China; State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, PR China
| | - Junting Wang
- School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan, 430070, PR China
| | - Pier-Luc Tremblay
- School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan, 430070, PR China; Shaoxing Institute for Advanced Research, Wuhan University of Technology, Shaoxing, 312300, PR China.
| | - Tian Zhang
- School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan, 430070, PR China; Shaoxing Institute for Advanced Research, Wuhan University of Technology, Shaoxing, 312300, PR China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, PR China; School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, PR China; State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, PR China; Sanya Science and Education Innovation Park, Wuhan University of Technology, Sanya, 572024, PR China.
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Xu X, Yang X, Tao Y, Zhu W, Ding X, Zhu J, Chen H. Enhanced Exciton Effect and Singlet Oxygen Generation Triggered by Tunable Oxygen Vacancies on Bi 2MoO 6 for Efficient Photocatalytic Degradation of Sodium Pentachlorophenol. Int J Mol Sci 2022; 23:15221. [PMID: 36499548 PMCID: PMC9735721 DOI: 10.3390/ijms232315221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/25/2022] [Accepted: 11/29/2022] [Indexed: 12/07/2022] Open
Abstract
Construction of the tunable oxygen vacancies (OVs) is widely utilized to accelerate molecular oxygen activation for boosting photocatalytic performance. Herein, the in-situ introduction of OVs on Bi2MoO6 was accomplished using a calcination treatment in an H2/Ar atmosphere. The introduced OVs can not only facilitate carrier separation, but also strengthen the exciton effect, which accelerates singlet oxygen generation through the energy transfer process. Superior carrier separation and abundant singlet oxygen played a crucial role in favoring photocatalytic NaPCP degradation. The optimal BMO-001-300 sample exhibited the fastest NaPCP degradation rate of 0.033 min-1, about 3.8 times higher than that of the pristine Bi2MoO6. NaPCP was effectively degraded and mineralized mainly through dechlorination, dehydroxylation and benzene ring opening. The present work will shed light on the construction and roles of OVs in semiconductor-based photocatalysis and provide a novel insight into ROS-mediated photocatalytic degradation.
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Affiliation(s)
- Xiao Xu
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, College of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, China
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Xianglong Yang
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
- National Reference Laboratory for Agricultural Testing (Biotoxin), Laboratory of Quality and Safety Risk Assessment for Oilseed Products (Wuhan), Key Laboratory of Detection for Mycotoxins, Quality Inspection and Test Center for Oilseed Products, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Yunlong Tao
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Wen Zhu
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, College of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Xing Ding
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Junjiang Zhu
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, College of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Hao Chen
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
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Li H, Zhang T, Tang X, Zhong J, Li J, Du Z, Dan Y. Effectively destruction of rhodamine B and perfluorooctanoic acid over BiOCl with boosted separation ability of carriers benefited from tunable oxygen vacancies. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Li Q, Yue ZH, Li YL, Hao YJ, Wang XJ, Su R, Li FT. Construction of Dual-Defective Al2O3/Bi12O17Cl2 Heterojunctions for Enhanced Photocatalytic Molecular Oxygen Activation via Defect Coupling and Charge Separation. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c04440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qi Li
- Hebei Key Laboratory of Photoelectric Control on Surface and Interface, College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Zi-han Yue
- Hebei Key Laboratory of Photoelectric Control on Surface and Interface, College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Yi-lei Li
- Hebei Key Laboratory of Photoelectric Control on Surface and Interface, College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Ying-juan Hao
- Hebei Key Laboratory of Photoelectric Control on Surface and Interface, College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Xiao-jing Wang
- Hebei Key Laboratory of Photoelectric Control on Surface and Interface, College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Ran Su
- Hebei Key Laboratory of Photoelectric Control on Surface and Interface, College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Fa-tang Li
- Hebei Key Laboratory of Photoelectric Control on Surface and Interface, College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China
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