ZrO2/Bi19S27Br3 Heterojunction with a Strong Coupled Interface for Efficient CO2 Photoreduction to Yield CH4
Wei Ouyang , Junze Zhao , Junjiang Chen , Yuqing Wang , Min Xue , Yunwu Zhang , Zijie Gong , Jun Di , Sheng Yin , Jiexiang Xia
Transactions of Tianjin University ›› 2025, Vol. 31 ›› Issue (5) : 437 -451.
ZrO2/Bi19S27Br3 Heterojunction with a Strong Coupled Interface for Efficient CO2 Photoreduction to Yield CH4
The conversion of solar energy to facilitate the photocatalytic transformation of CO2 into CH4 addresses the energy shortage caused by reducing humans’ excessive dependence on fossil fuels and contributes substantially to the goal of carbon neutrality. However, there are still many limitations on the conversion of CO2 to CH4. In this work, a series of ZrO2/Bi19S27Br3 composite photocatalysts was prepared by the solvothermal method and applied to the methanation reaction of CO2. Combining Bi19S27Br3 with ZrO2 forms a heterojunction with a strong coupling interface. This greatly enhanced the CO2 adsorption performance of the 50-ZrO2/Bi19S27Br3 composite and promoted the effective separation of photogenerated electron–hole pairs. Without the addition of photosensitizers, the CH4 selectivity of the 50-ZrO2/Bi19S27Br3 composite is approximately 63%, and the CH4 generation rate is 18.04 μmol/(gcat·h), which is noticeably higher than that of ZrO2 or Bi19S27Br3. This research demonstrated enhanced photocatalytic CO2 reduction efficiency using Bi19S27Br3-based materials, providing a novel approach for the use of CO2 resources.
Bi19S27Br3 / ZrO2 / CO2 photoreduction / Heterojunction
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The Author(s) under exclusive licence to Tianjin University
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