Chemically bonded BiVO₄/Bi₁₉Cl₃S₂₇ heterojunction with fast hole extraction dynamics for continuous CO₂ photoreduction
Surface charge localization and inferior charge transfer efficiency seriously restrict the supply of reactive hydrogen and the reaction dynamics of CO2 photoreduction performance of photocatalysts. Herein, chemically bonded BiVO4/Bi19Cl3S27 (BVO/BCS) S-scheme heterojunction with a strong internal el...
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sg-ntu-dr.10356-1719052023-11-17T15:31:42Z Chemically bonded BiVO₄/Bi₁₉Cl₃S₂₇ heterojunction with fast hole extraction dynamics for continuous CO₂ photoreduction Huang, Baojing Fu, Xinxin Wang, Kai Wang, Liang Zhang, Hualei Liu, Zhongyi Liu, Bin Li, Jun School of Chemistry, Chemical Engineering and Biotechnology Engineering::Chemical engineering Extraction Dynamics Activated Hydrogen Surface charge localization and inferior charge transfer efficiency seriously restrict the supply of reactive hydrogen and the reaction dynamics of CO2 photoreduction performance of photocatalysts. Herein, chemically bonded BiVO4/Bi19Cl3S27 (BVO/BCS) S-scheme heterojunction with a strong internal electric field is designed. Experimental and density function theory calculation results confirm that the elaborated heterojunction accelerates the vectorial migration of photogenerated charges from BiVO4 to Bi19Cl3S27 via the interfacial chemical bonding interactions (i.e., Bi-O and Bi-S bonds) between Bi atoms of BVO and S atoms of BCS or Bi atoms of BCS and O atoms of BVO under light irradiation, breaking the interfacial barrier and surface charge localization of Bi19Cl3S27, and further decreasing the energy of reactive hydrogen generation, CO2 absorption and activation. The separation efficiency of photogenerated carriers is much more efficient than that counterpart individual in BVO/BCS S-scheme heterojunction system. As a result, BVO/BCS heterojunction exhibits a significantly improved continuous photocatalytic performance for CO2 reduction and the 24 h CO yield reaches 678.27 μmol·g−1. This work provides an atomic-level insight into charge transfer kinetics and CO2 reduction mechanism in S-scheme heterojunction. Published version This work was financially supported by Outstanding Talent Research Fund of Zhengzhou University, China Postdoc toral Science Foundation (2020TQ0277, 2020M682328), Central Plains Science and Technology Innovation Leader Project (214200510006), China Scholarship Council (No. 202108410356), and Postdoctoral Science Foundation of Henan province (202002010). 2023-11-15T07:22:44Z 2023-11-15T07:22:44Z 2023 Journal Article Huang, B., Fu, X., Wang, K., Wang, L., Zhang, H., Liu, Z., Liu, B. & Li, J. (2023). Chemically bonded BiVO₄/Bi₁₉Cl₃S₂₇ heterojunction with fast hole extraction dynamics for continuous CO₂ photoreduction. Advanced Powder Materials, 100140-. https://dx.doi.org/10.1016/j.apmate.2023.100140 2772-834X https://hdl.handle.net/10356/171905 10.1016/j.apmate.2023.100140 2-s2.0-85164533101 100140 en Advanced Powder Materials © 2023 Central South University. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). application/pdf |
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Engineering::Chemical engineering Extraction Dynamics Activated Hydrogen Huang, Baojing Fu, Xinxin Wang, Kai Wang, Liang Zhang, Hualei Liu, Zhongyi Liu, Bin Li, Jun Chemically bonded BiVO₄/Bi₁₉Cl₃S₂₇ heterojunction with fast hole extraction dynamics for continuous CO₂ photoreduction |
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Surface charge localization and inferior charge transfer efficiency seriously restrict the supply of reactive hydrogen and the reaction dynamics of CO2 photoreduction performance of photocatalysts. Herein, chemically bonded BiVO4/Bi19Cl3S27 (BVO/BCS) S-scheme heterojunction with a strong internal electric field is designed. Experimental and density function theory calculation results confirm that the elaborated heterojunction accelerates the vectorial migration of photogenerated charges from BiVO4 to Bi19Cl3S27 via the interfacial chemical bonding interactions (i.e., Bi-O and Bi-S bonds) between Bi atoms of BVO and S atoms of BCS or Bi atoms of BCS and O atoms of BVO under light irradiation, breaking the interfacial barrier and surface charge localization of Bi19Cl3S27, and further decreasing the energy of reactive hydrogen generation, CO2 absorption and activation. The separation efficiency of photogenerated carriers is much more efficient than that counterpart individual in BVO/BCS S-scheme heterojunction system. As a result, BVO/BCS heterojunction exhibits a significantly improved continuous photocatalytic performance for CO2 reduction and the 24 h CO yield reaches 678.27 μmol·g−1. This work provides an atomic-level insight into charge transfer kinetics and CO2 reduction mechanism in S-scheme heterojunction. |
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School of Chemistry, Chemical Engineering and Biotechnology |
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School of Chemistry, Chemical Engineering and Biotechnology Huang, Baojing Fu, Xinxin Wang, Kai Wang, Liang Zhang, Hualei Liu, Zhongyi Liu, Bin Li, Jun |
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Article |
author |
Huang, Baojing Fu, Xinxin Wang, Kai Wang, Liang Zhang, Hualei Liu, Zhongyi Liu, Bin Li, Jun |
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Huang, Baojing |
title |
Chemically bonded BiVO₄/Bi₁₉Cl₃S₂₇ heterojunction with fast hole extraction dynamics for continuous CO₂ photoreduction |
title_short |
Chemically bonded BiVO₄/Bi₁₉Cl₃S₂₇ heterojunction with fast hole extraction dynamics for continuous CO₂ photoreduction |
title_full |
Chemically bonded BiVO₄/Bi₁₉Cl₃S₂₇ heterojunction with fast hole extraction dynamics for continuous CO₂ photoreduction |
title_fullStr |
Chemically bonded BiVO₄/Bi₁₉Cl₃S₂₇ heterojunction with fast hole extraction dynamics for continuous CO₂ photoreduction |
title_full_unstemmed |
Chemically bonded BiVO₄/Bi₁₉Cl₃S₂₇ heterojunction with fast hole extraction dynamics for continuous CO₂ photoreduction |
title_sort |
chemically bonded bivo₄/bi₁₉cl₃s₂₇ heterojunction with fast hole extraction dynamics for continuous co₂ photoreduction |
publishDate |
2023 |
url |
https://hdl.handle.net/10356/171905 |
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1783955568286760960 |