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Directed Inward Migration of S‐Vacancy in Bi2S3 QDs for Selective Photocatalytic CO2 to CH3OH
https://orcid.org/0000-0002-0842-5316
https://orcid.org/0000-0003-0506-273X
https://orcid.org/0000-0001-6907-3230
AbstractThe directional migration of S‐vacancy is beneficial to the separation of photogenerated carriers and the transition of electrons in semiconductors. In this study, Bix/Bi2−xSy@carboxylic‐cellulose (CC) photocatalyst with bionic chloroplast structure is obtained by electron beam irradiation to induce S‐vacancy in Bi2S3@CC. The results of CO2 photoreduction experiments demonstrate that the reduction rate of CO2 to CH3OH by Bix/Bi2‒xS2.89@CC‐450 samples is 10.74 µmol·g−1·h−1, and the selectivity is 92.82%. The results show that the inward migration behavior of the borderline S‐vacancy (b‐Sv) induces the redistribution of electrons in Bix/Bi2−xSy@CC. The Bi° clusters in Bix/Bi2−xSy@CC is conducive to adsorb CO2, and the internal S‐vacancy (i‐Sv) is conducive to adsorb CH3OH, which accelerate the transfer of gas‐phase products to realize the controllable conversion of CO2 and photoreduction products at the gas–liquid–solid three‐phase interface. This study provides a new idea for the development and utilization of green photocatalysts in clean energy.
Directed Inward Migration of S‐Vacancy in Bi2S3 QDs for Selective Photocatalytic CO2 to CH3OH
https://orcid.org/0000-0002-0842-5316
https://orcid.org/0000-0003-0506-273X
https://orcid.org/0000-0001-6907-3230
AbstractThe directional migration of S‐vacancy is beneficial to the separation of photogenerated carriers and the transition of electrons in semiconductors. In this study, Bix/Bi2−xSy@carboxylic‐cellulose (CC) photocatalyst with bionic chloroplast structure is obtained by electron beam irradiation to induce S‐vacancy in Bi2S3@CC. The results of CO2 photoreduction experiments demonstrate that the reduction rate of CO2 to CH3OH by Bix/Bi2‒xS2.89@CC‐450 samples is 10.74 µmol·g−1·h−1, and the selectivity is 92.82%. The results show that the inward migration behavior of the borderline S‐vacancy (b‐Sv) induces the redistribution of electrons in Bix/Bi2−xSy@CC. The Bi° clusters in Bix/Bi2−xSy@CC is conducive to adsorb CO2, and the internal S‐vacancy (i‐Sv) is conducive to adsorb CH3OH, which accelerate the transfer of gas‐phase products to realize the controllable conversion of CO2 and photoreduction products at the gas–liquid–solid three‐phase interface. This study provides a new idea for the development and utilization of green photocatalysts in clean energy.
Directed Inward Migration of S‐Vacancy in Bi2S3 QDs for Selective Photocatalytic CO2 to CH3OH
https://orcid.org/0000-0002-0842-5316
https://orcid.org/0000-0003-0506-273X
https://orcid.org/0000-0001-6907-3230
AbstractThe directional migration of S‐vacancy is beneficial to the separation of photogenerated carriers and the transition of electrons in semiconductors. In this study, Bix/Bi2−xSy@carboxylic‐cellulose (CC) photocatalyst with bionic chloroplast structure is obtained by electron beam irradiation to induce S‐vacancy in Bi2S3@CC. The results of CO2 photoreduction experiments demonstrate that the reduction rate of CO2 to CH3OH by Bix/Bi2‒xS2.89@CC‐450 samples is 10.74 µmol·g−1·h−1, and the selectivity is 92.82%. The results show that the inward migration behavior of the borderline S‐vacancy (b‐Sv) induces the redistribution of electrons in Bix/Bi2−xSy@CC. The Bi° clusters in Bix/Bi2−xSy@CC is conducive to adsorb CO2, and the internal S‐vacancy (i‐Sv) is conducive to adsorb CH3OH, which accelerate the transfer of gas‐phase products to realize the controllable conversion of CO2 and photoreduction products at the gas–liquid–solid three‐phase interface. This study provides a new idea for the development and utilization of green photocatalysts in clean energy.
Directed Inward Migration of S‐Vacancy in Bi2S3 QDs for Selective Photocatalytic CO2 to CH3OH
Advanced Science
Wang, Jing (author) / Wang, Wenlei (author) / Deng, Yao (author) / Zhang, Zhen (author) / Wang, Hui (author) / Wu, Yiqiang (author)
2025-01-09
Article (Journal)
Electronic Resource
English
Directed Inward Migration of S‐Vacancy in Bi2S3 QDs for Selective Photocatalytic CO2 to CH3OH
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