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Xu Y, Hou W, Huang K, Guo H, Wang Z, Lian C, Zhang J, Wu D, Lei Z, Liu Z, Wang L. Engineering Built-In Electric Field Microenvironment of CQDs/g-C 3N 4 Heterojunction for Efficient Photocatalytic CO 2 Reduction. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2403607. [PMID: 38728594 PMCID: PMC11267297 DOI: 10.1002/advs.202403607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Indexed: 05/12/2024]
Abstract
Graphitic carbon nitride (CN), as a nonmetallic photocatalyst, has gained considerable attention for its cost-effectiveness and environmentally friendly nature in catalyzing solar-driven CO2 conversion into valuable products. However, the photocatalytic efficiency of CO2 reduction with CN remains low, accompanied by challenges in achieving desirable product selectivity. To address these limitations, a two-step hydrothermal-calcination tandem synthesis strategy is presented, introducing carbon quantum dots (CQDs) into CN and forming ultra-thin CQD/CN nanosheets. The integration of CQDs induces a distinct work function with CN, creating a robust interface electric field after the combination. This electric field facilitates the accumulation of photoelectrons in the CQDs region, providing an abundant source of reduced electrons for the photocatalytic process. Remarkably, the CQD/CN nanosheets exhibit an average CO yield of 120 µmol g-1, showcasing an outstanding CO selectivity of 92.8%. The discovery in the work not only presents an innovative pathway for the development of high-performance photocatalysts grounded in non-metallic CN materials employing CQDs but also opens new avenues for versatile application prospects in environmental protection and sustainable cleaning energy.
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Affiliation(s)
- Yun Xu
- Institute of Nanochemistry and NanobiologySchool of Environmental and Chemical EngineeringShanghai UniversityShanghai200444P. R. China
| | - Weidong Hou
- Institute of Nanochemistry and NanobiologySchool of Environmental and Chemical EngineeringShanghai UniversityShanghai200444P. R. China
| | - Kai Huang
- State Key Laboratory of Chemical EngineeringShanghai Engineering Research Center of Hierarchical Nanomaterialsand School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237P. R. China
| | - Huazhang Guo
- Institute of Nanochemistry and NanobiologySchool of Environmental and Chemical EngineeringShanghai UniversityShanghai200444P. R. China
| | - Zeming Wang
- Institute of Nanochemistry and NanobiologySchool of Environmental and Chemical EngineeringShanghai UniversityShanghai200444P. R. China
| | - Cheng Lian
- State Key Laboratory of Chemical EngineeringShanghai Engineering Research Center of Hierarchical Nanomaterialsand School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237P. R. China
| | - Jiye Zhang
- School of Materials Science and EngineeringShanghai University99 Shangda RoadShanghai200444P. R. China
| | - Deli Wu
- College of Environmental & EngineeringTongji UniversityShanghai200092P. R. China
| | - Zhendong Lei
- College of Environmental & EngineeringTongji UniversityShanghai200092P. R. China
- School of Materials Science and EngineeringNanyang Technological University50 Nanyang AvenueSingapore639798Singapore
| | - Zheng Liu
- School of Materials Science and EngineeringNanyang Technological University50 Nanyang AvenueSingapore639798Singapore
| | - Liang Wang
- Institute of Nanochemistry and NanobiologySchool of Environmental and Chemical EngineeringShanghai UniversityShanghai200444P. R. China
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Liu M, Qin H, Xu H, Zou Z, Deng C, Xia D, Yu Q, Zheng Y, Chen D. Confine activation peroxymonosulfate by surface oxygen vacancies of BiO1-Cl to boost its utilization rate. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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3
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In-situ sunlight-driven tuning of photo-induced electron-hole generation and separation rates in bismuth oxychlorobromide for highly efficient water decontamination under visible light irradiation. J Colloid Interface Sci 2022; 614:58-65. [DOI: 10.1016/j.jcis.2022.01.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 12/31/2021] [Accepted: 01/04/2022] [Indexed: 12/19/2022]
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Cao P, Zhang Z, Bai X, He Y, Song P, Wang R. Complecting the BiOCl nano-roundels based hollow microbasket induced by chitosan for dramatically enhancing photocatalytic activity. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Yang X, Sun S, Cui J, Yang M, Yang Q, Xiao P, Liang S. One-pot construction of robust BiOCl/ZnO p-n heterojunctions with semi-coherent interfaces toward improving charge separation for photodegradation enhancement. NANOSCALE ADVANCES 2021; 3:4851-4857. [PMID: 36134308 PMCID: PMC9419600 DOI: 10.1039/d1na00396h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/06/2021] [Indexed: 05/16/2023]
Abstract
Heterojunction engineering is an effective strategy to enhance the photodegradation activity via improving the spatial charge separation. However, the poor interface interactions and stability limit the photocatalytic activity and stability of traditional heterojunctions. Herein, robust BiOCl/ZnO p-n heterojunctions with semi-coherent interfaces were prepared by a one-pot hydrothermal method to improve the activity and stability toward photocatalytic degradation than that of the counterpart, in which the semi-coherent interfaces exhibited lower phase boundary energy, resulting in highly-stable interfaces between BiOCl and ZnO as well as the formation of the built-in electric field in this robust p-n heterojunction for enhanced charge separation. The cycle test results verified that the BiOCl/ZnO heterojunctions with semi-coherent interfaces can maintain the photocatalytic degradation activity at the initial level even after 10 cycles, while deactivation of the sample without semi-coherent interfaces occurred after 3 cycles only. Optical and electrical properties revealed that BiOCl/ZnO heterojunctions with semi-coherent interfaces possessed the highest electron migration and charge separation efficiency, resulting in the highest photodegradation activity. Density functional theory (DFT) calculations and electron spin-resonance (ESR) results verified that the enhanced charge separation was assigned to the type-II photocatalytic mechanism, leading to the enhancement of ˙OH and ˙O2 - reactive oxygen species. This work would provoke the development of one-step construction of new highly active BiOX (X = Cl, Br, and I)-based heterogeneous photocatalysts with stable semi-coherent interfaces.
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Affiliation(s)
- Xiaoli Yang
- Engineering Research Center of Conducting Materials and Composite Technology, Ministry of Education, Shaanxi Engineering Research Centers of Metal-Based Heterogeneous Materials and Advanced Manufacturing Technology, Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology, School of Materials Science and Engineering, Xi'an University of Technology Xi'an 710048 Shaanxi People's Republic of China
| | - Shaodong Sun
- Engineering Research Center of Conducting Materials and Composite Technology, Ministry of Education, Shaanxi Engineering Research Centers of Metal-Based Heterogeneous Materials and Advanced Manufacturing Technology, Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology, School of Materials Science and Engineering, Xi'an University of Technology Xi'an 710048 Shaanxi People's Republic of China
| | - Jie Cui
- Engineering Research Center of Conducting Materials and Composite Technology, Ministry of Education, Shaanxi Engineering Research Centers of Metal-Based Heterogeneous Materials and Advanced Manufacturing Technology, Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology, School of Materials Science and Engineering, Xi'an University of Technology Xi'an 710048 Shaanxi People's Republic of China
| | - Man Yang
- Engineering Research Center of Conducting Materials and Composite Technology, Ministry of Education, Shaanxi Engineering Research Centers of Metal-Based Heterogeneous Materials and Advanced Manufacturing Technology, Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology, School of Materials Science and Engineering, Xi'an University of Technology Xi'an 710048 Shaanxi People's Republic of China
| | - Qing Yang
- Engineering Research Center of Conducting Materials and Composite Technology, Ministry of Education, Shaanxi Engineering Research Centers of Metal-Based Heterogeneous Materials and Advanced Manufacturing Technology, Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology, School of Materials Science and Engineering, Xi'an University of Technology Xi'an 710048 Shaanxi People's Republic of China
| | - Peng Xiao
- Engineering Research Center of Conducting Materials and Composite Technology, Ministry of Education, Shaanxi Engineering Research Centers of Metal-Based Heterogeneous Materials and Advanced Manufacturing Technology, Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology, School of Materials Science and Engineering, Xi'an University of Technology Xi'an 710048 Shaanxi People's Republic of China
| | - Shuhua Liang
- Engineering Research Center of Conducting Materials and Composite Technology, Ministry of Education, Shaanxi Engineering Research Centers of Metal-Based Heterogeneous Materials and Advanced Manufacturing Technology, Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology, School of Materials Science and Engineering, Xi'an University of Technology Xi'an 710048 Shaanxi People's Republic of China
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6
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Yu X, Lu K, Chen L. Synergistic effects of oxygen vacancies and the chelation of tetracycline with metallic ions for enhanced degradation of tetracycline over photocatalysts La 2−xK xNiMnO 6. CrystEngComm 2021. [DOI: 10.1039/d0ce01340d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
OVs induced by potassium doping and the chelation of TC with the metallic ions synergistically enhanced photodegradation of TC by La2−xKxNiMnO6 photocatalysts.
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Affiliation(s)
- Xiaoyan Yu
- School of Physics and Telecommunication Engineering
- Yulin Normal University
- Yulin 537000
- China
| | - Ke Lu
- School of Chemistry and Food
- Yulin Normal University
- Yulin 537000
- China
| | - Le Chen
- School of Physics and Telecommunication Engineering
- Yulin Normal University
- Yulin 537000
- China
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7
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Wang C, Wang K, Huang D, Li L, Feng K, Abdel Ghany NA, Zhao L, Jiang F. A GeSe micro air brick crystal-based film for the sunlight photodegradation of dye-polluted waters. CrystEngComm 2021. [DOI: 10.1039/d0ce01684e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Pinkish purple rhodamine B polluted water was efficiently photodegraded into colorless by the GeSe MAB crystal-based film under sunlight irradiation.
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Affiliation(s)
- Chenyang Wang
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou 510631
- People's Republic of China
| | - Kang Wang
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou 510631
- People's Republic of China
| | - Dingwang Huang
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou 510631
- People's Republic of China
| | - Lintao Li
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou 510631
- People's Republic of China
| | - Kuang Feng
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou 510631
- People's Republic of China
| | | | - Lingzhi Zhao
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou 510631
- People's Republic of China
- SCNU Qingyuan Institute of Science and Technology Innovation Co., Ltd
| | - Feng Jiang
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou 510631
- People's Republic of China
- SCNU Qingyuan Institute of Science and Technology Innovation Co., Ltd
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8
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Shen Q, Wang J, Xu B, Liu G, Huo H, Sun Y, Cao B, Li C. Photoinduced defect engineering: enhanced photocatalytic performance of 3D BiOCl nanoclusters with abundant oxygen vacancies. CrystEngComm 2021. [DOI: 10.1039/d0ce01652g] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Oxygen vacancies are highly important for photocatalytic performance in bismuth oxychloride, but their preparation is limited to vacuum roasting and hydrogen annealing techniques at high temperatures (200–400 °C).
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Affiliation(s)
- Qi Shen
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
| | - Junnuan Wang
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
| | - Bo Xu
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
| | - Guangning Liu
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
| | - Huanyu Huo
- Foshan (Southern China) Institute for New Materials
- Foshan 528200
- China
| | - Yiqiang Sun
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
- Foshan (Southern China) Institute for New Materials
| | - Bingqiang Cao
- School of Materials Science And Engineering
- University of Jinan
- Jinan 250022
- China
| | - Cuncheng Li
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- China
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9
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Zhang L, Shen Q, Yu L, Huang F, Zhang C, Sheng J, Zhang F, Cheng D, Yang H. Fabrication of a high-adsorption N–TiO 2/Bi 2MoO 6 composite photocatalyst with a hierarchical heterostructure for boosted weak-visible-light photocatalytic degradation of tetracycline. CrystEngComm 2020. [DOI: 10.1039/d0ce00761g] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
TiO2 hierarchical heterostructure photocatalyst was successfully fabricated through the in situ growth of Bi2MoO6 nanosheets on rough N–TiO2 nanorods with a bark-like surface. The structure–property relationship of this composite material were researched.
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Affiliation(s)
- Liruhua Zhang
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P.R. China
| | - Qianhong Shen
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P.R. China
| | - LiXing Yu
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P.R. China
| | - Feilong Huang
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P.R. China
| | - Changteng Zhang
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P.R. China
| | - Jiansong Sheng
- Zhejiang-California International NanoSystems Institute
- Zhejiang University
- Hangzhou
- P.R. China
- Research Institute of Zhejiang University-Taizhou
| | - Fang Zhang
- Zhejiang-California International NanoSystems Institute
- Zhejiang University
- Hangzhou
- P.R. China
- Research Institute of Zhejiang University-Taizhou
| | - Di Cheng
- Zhejiang-California International NanoSystems Institute
- Zhejiang University
- Hangzhou
- P.R. China
- Research Institute of Zhejiang University-Taizhou
| | - Hui Yang
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P.R. China
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