当前位置：
X-MOL 学术
›
Environ. Sci. Technol.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Enhanced Photocatalytic Degradation Performance by Fluid-Induced Piezoelectric Field
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2018-07-05 , DOI: 10.1021/acs.est.8b00946 Yawei Feng 1 , Hao Li 1 , Lili Ling 1 , Sa Yan 1 , Donglai Pan 1 , Hao Ge 1 , Hexing Li 1 , Zhenfeng Bian 1
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2018-07-05 , DOI: 10.1021/acs.est.8b00946 Yawei Feng 1 , Hao Li 1 , Lili Ling 1 , Sa Yan 1 , Donglai Pan 1 , Hao Ge 1 , Hexing Li 1 , Zhenfeng Bian 1
Affiliation
|
The introduction of a piezoelectric field has been proven a promising method to enhance photocatalytic activity by preventing photoelectron–hole recombination. However, the formation of a piezoelectric field requires additional mechanical force or high-frequency ultrasonic baths, which limits its potential application on industrial scale. Therefore, it is of great practical significance to design the catalyst that can harvest the discrete energy such as the fluid mechanical energy to form the electric field. Herein, PZT/TiO2 catalyst with a core–shell configuration was prepared by a simple coating method. By collecting the mechanical energy of water, an internal piezoelectric field was induced. Under 800 rpm stirring, transient photocurrent measured on PZT/TiO2 electrode is about 1.7 times higher than that of 400 rpm. Correspondingly, the photocatalytic degradation rate and mineralization efficiency of RhB, BPA, phenol, p-chlorophenol much improved, showing the promoting effect of piezoelectric field generated directly from harvesting the discrete fluid mechanical energy.
中文翻译：
流体诱导的压电电场增强的光催化降解性能
压电场的引入已被证明是通过防止光电子-空穴复合来增强光催化活性的一种有前途的方法。然而，压电场的形成需要附加的机械力或高频超声浴，这限制了其在工业规模上的潜在应用。因此，设计一种可以收集离散能量如流体机械能形成电场的催化剂具有重要的现实意义。在此，通过简单的涂覆方法制备了具有核-壳结构的PZT / TiO 2催化剂。通过收集水的机械能，产生了内部压电场。在800 rpm搅拌下，在PZT / TiO 2上测量了瞬时光电流电极大约是400 rpm的1.7倍。相应地，RhB，BPA，苯酚，对氯苯酚的光催化降解速率和矿化效率大大提高，显示了直接通过收集离散流体机械能产生的压电场的促进作用。
更新日期：2018-07-08
中文翻译：
流体诱导的压电电场增强的光催化降解性能
压电场的引入已被证明是通过防止光电子-空穴复合来增强光催化活性的一种有前途的方法。然而，压电场的形成需要附加的机械力或高频超声浴，这限制了其在工业规模上的潜在应用。因此，设计一种可以收集离散能量如流体机械能形成电场的催化剂具有重要的现实意义。在此，通过简单的涂覆方法制备了具有核-壳结构的PZT / TiO 2催化剂。通过收集水的机械能，产生了内部压电场。在800 rpm搅拌下，在PZT / TiO 2上测量了瞬时光电流电极大约是400 rpm的1.7倍。相应地，RhB，BPA，苯酚，对氯苯酚的光催化降解速率和矿化效率大大提高，显示了直接通过收集离散流体机械能产生的压电场的促进作用。
京公网安备 11010802027423号