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Regulating the Built-In Electric Field of BiOBr by a Piezoelectric Mineral Tourmaline and the Enhanced Photocatalytic Property
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-01-18 , DOI: 10.1021/acs.iecr.1c03616 Xueyuan Yang 1 , Xiaolong Yang 1 , Yanhua Peng 1 , Zhuo Li 1 , Jianqiang Yu 1 , Yan Zhang 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-01-18 , DOI: 10.1021/acs.iecr.1c03616 Xueyuan Yang 1 , Xiaolong Yang 1 , Yanhua Peng 1 , Zhuo Li 1 , Jianqiang Yu 1 , Yan Zhang 1
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The prospective strategy to control the electrochemical properties of photocatalysts involves the spontaneous polarization characteristics of ferroelectric materials to adjust the electronic structure of the interface. Herein, we report that the polarization of the BiOBr (BOB) photocatalyst is able to be regulated by the induction of a piezoelectric mineral tourmaline and the enhanced photocatalytic property. The BiOBr photocatalyst with a preferable exposure of high active facet can be synthesized. The built-in electric field can be regulated with various amounts of a piezoelectric mineral tourmaline during the synthesis process. It can be found that the photocatalytic properties toward degradations for both Rhodamine B dye and a colorless phenol pollutant with xenon lamp illumination at room temperature over the composite tourmaline/BiOBr improved effectively as compared to those of pure BiOBr. 2%T/BOB photocatalyst showed the best performance and the overall decomposition of the pollution is twice that of the pure BOB. The results demonstrated that the spontaneous polarization effect of tourmaline led to the variation in the built-in electric field of BiOBr, which facilitated the separation and transport of photogenerated charges and enhanced the photocatalytic properties.
中文翻译：
通过压电矿物电气石调节 BiOBr 的内置电场和增强的光催化性能
控制光催化剂电化学性能的前瞻性策略涉及铁电材料的自发极化特性以调整界面的电子结构。在这里，我们报告了 BiOBr (BOB) 光催化剂的极化可以通过压电矿物电气石的诱导和增强的光催化性能来调节。可以合成具有高活性面的优选暴露的BiOBr光催化剂。在合成过程中，内置电场可以通过不同量的压电矿物电气石进行调节。可以发现，与纯BiOBr相比，在室温下氙灯照射下，复合电气石/BiOBr对罗丹明B染料和无色苯酚污染物的降解光催化性能有效提高。2%T/BOB光催化剂表现出最好的性能，污染物的整体分解是纯BOB的两倍。结果表明，电气石的自发极化效应导致BiOBr内建电场发生变化，有利于光生电荷的分离和传输，增强了光催化性能。
更新日期：2022-02-02
中文翻译：
通过压电矿物电气石调节 BiOBr 的内置电场和增强的光催化性能
控制光催化剂电化学性能的前瞻性策略涉及铁电材料的自发极化特性以调整界面的电子结构。在这里，我们报告了 BiOBr (BOB) 光催化剂的极化可以通过压电矿物电气石的诱导和增强的光催化性能来调节。可以合成具有高活性面的优选暴露的BiOBr光催化剂。在合成过程中，内置电场可以通过不同量的压电矿物电气石进行调节。可以发现，与纯BiOBr相比，在室温下氙灯照射下，复合电气石/BiOBr对罗丹明B染料和无色苯酚污染物的降解光催化性能有效提高。2%T/BOB光催化剂表现出最好的性能，污染物的整体分解是纯BOB的两倍。结果表明，电气石的自发极化效应导致BiOBr内建电场发生变化，有利于光生电荷的分离和传输，增强了光催化性能。
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