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Construction of a MAPbBr3/BiFeO3 Z-scheme heterojunction with enhanced piezo-photocatalytic performance
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2023-10-30 , DOI: 10.1039/d3cy01249b Dan-Yang Zhou 1 , Yi-Ou Zhou 1 , Su-Yan Fang 1 , Guang-Yu Pan 1 , Xiong He 1 , Mei-Ling Xu 1 , Fu-Tian Liu 1 , Kui Li 1
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2023-10-30 , DOI: 10.1039/d3cy01249b Dan-Yang Zhou 1 , Yi-Ou Zhou 1 , Su-Yan Fang 1 , Guang-Yu Pan 1 , Xiong He 1 , Mei-Ling Xu 1 , Fu-Tian Liu 1 , Kui Li 1
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Based on the large visible light absorption coefficient and tunable band gap of MAPbBr3, weakening the strong photogenerated carrier recombination tendency to exploit the CO2 reduction potential is a worthy research topic. The built-in polarized electric field induced by the piezoelectric effect can guide the directional movement of charged particles, which is considered to be an effective driving force for the separation of electron–hole pairs. In this work, a MAPbBr3/BiFeO3 Z-scheme heterojunction was prepared by a simple mechanical synthesis method, which showed an enhanced CO2 reduction performance where the optimal sample (MB1) achieved yields of 8.4 μmol g−1 (CH4) and 3.7 μmol g−1 (CO) under light alone as well as 4.1 μmol g−1 (CH4) and 1.7 μmol g−1 (CO) under ultrasound alone, thanks to the improved separation rate of photogenerated carriers due to the construction of the MAPbBr3/BiFeO3 Z-scheme heterojunction. Moreover, MB1 had a CH4 yield of 34.9 μmol g−1 and a CO yield of 15.1 μmol g−1 under the dual energy drive system of illumination and piezoelectricity, which are 6.7 and 5.6 times higher than the original MAPbBr3, respectively.
中文翻译：
具有增强压电光催化性能的 MAPbBr3/BiFeO3 Z 型异质结的构建
基于MAPbBr 3较大的可见光吸收系数和可调谐带隙，削弱强光生载流子复合趋势以开发CO 2还原潜力是一个值得研究的课题。压电效应诱发的内置极化电场可以引导带电粒子的定向运动，被认为是电子-空穴对分离的有效驱动力。在这项工作中，通过简单的机械合成方法制备了MAPbBr 3 /BiFeO 3 Z型异质结，该异质结表现出增强的CO 2还原性能，其中最佳样品（MB1）的产率达到8.4 μmol g -1 (CH 4 )仅在光下为 4.1 μmol g -1 (CH 4 ) 和1.7 μmol g -1 ( CO)，仅在超声下为 4.1 μmol g -1 (CH 4 ) 和 1.7 μmol g -1 (CO)，这得益于该结构提高了光生载流子的分离率MAPbBr 3 /BiFeO 3 Z型异质结。此外，在光照和压电双能驱动系统下，MB1的CH 4产量为34.9 μmol g -1，CO产量为15.1 μmol g -1 ，分别是原始MAPbBr 3的6.7和5.6倍。
更新日期：2023-10-30
中文翻译：
具有增强压电光催化性能的 MAPbBr3/BiFeO3 Z 型异质结的构建
基于MAPbBr 3较大的可见光吸收系数和可调谐带隙，削弱强光生载流子复合趋势以开发CO 2还原潜力是一个值得研究的课题。压电效应诱发的内置极化电场可以引导带电粒子的定向运动，被认为是电子-空穴对分离的有效驱动力。在这项工作中，通过简单的机械合成方法制备了MAPbBr 3 /BiFeO 3 Z型异质结，该异质结表现出增强的CO 2还原性能，其中最佳样品（MB1）的产率达到8.4 μmol g -1 (CH 4 )仅在光下为 4.1 μmol g -1 (CH 4 ) 和1.7 μmol g -1 ( CO)，仅在超声下为 4.1 μmol g -1 (CH 4 ) 和 1.7 μmol g -1 (CO)，这得益于该结构提高了光生载流子的分离率MAPbBr 3 /BiFeO 3 Z型异质结。此外，在光照和压电双能驱动系统下，MB1的CH 4产量为34.9 μmol g -1，CO产量为15.1 μmol g -1 ，分别是原始MAPbBr 3的6.7和5.6倍。
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