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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Main Authors: Huang, Baojing, Fu, Xinxin, Wang, Kai, Wang, Liang, Zhang, Hualei, Liu, Zhongyi, Liu, Bin, Li, Jun
Other Authors: School of Chemistry, Chemical Engineering and Biotechnology
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/171905
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Institution: Nanyang Technological University
Language: English
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spelling 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
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Chemical engineering
Extraction Dynamics
Activated Hydrogen
spellingShingle 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
description 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.
author2 School of Chemistry, Chemical Engineering and Biotechnology
author_facet School of Chemistry, Chemical Engineering and Biotechnology
Huang, Baojing
Fu, Xinxin
Wang, Kai
Wang, Liang
Zhang, Hualei
Liu, Zhongyi
Liu, Bin
Li, Jun
format Article
author Huang, Baojing
Fu, Xinxin
Wang, Kai
Wang, Liang
Zhang, Hualei
Liu, Zhongyi
Liu, Bin
Li, Jun
author_sort 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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