Macroscopic Polarization Enhancement Promoting Photo- and Piezoelectric-Induced Charge Separation and Molecular Oxygen Activation
Macroscopic Polarization Enhancement Promoting Photo- and Piezoelectric-Induced Charge Separation and Molecular Oxygen Activation
复制标题
宏观偏振增强促进光和压电诱导的电荷分离和分子氧活化
DOI：
10.1002/anie.201706549
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发表时间：
2017-09-18
影响因子：
16.6
通讯作者：
Zhang, Yihe
中科院分区：
文献类型：
--
作者：
Huang, Hongwei;Tu, Shuchen;Zhang, Yihe
高效的光和压电诱导的分子氧激活都实现了宏观极化增强的非中心对称的压电半导体BiOIO 3。V5+离子取代IO 3多面体中的I5+离子导致BiOIO 3的宏观极化增强，这有助于光催化和压电催化过程中的电荷分离，并大大促进了光和压电诱导的活性氧物种（ROS）的释放，如超氧自由基（O-）。(2)-)和羟基（（OH）-O-）。这项工作推进压电作为一种新的途径，以有效的ROS的产生，也公开了宏观极化工程的多响应催化的改进。
Efficient photo- and piezoelectric-induced molecular oxygen activation are both achieved by macroscopic polarization enhancement on a noncentrosymmetric piezoelectric semiconductor BiOIO3. The replacement of V5+ ions for I5+ in IO3 polyhedra gives rise to strengthened macroscopic polarization of BiOIO3, which facilitates the charge separation in the photocatalytic and piezoelectric catalytic process, and renders largely promoted photo- and piezoelectric induced reactive oxygen species (ROS) evolution, such as superoxide radicals (O-.(2)-) and hydroxyl radicals ((OH)-O-.). This work advances piezoelectricity as a new route to efficient ROS generation, and also discloses macroscopic polarization engineering on improvement of multi-responsive catalysis.