Photocatalysis of composite film PDMS-PMN-PT@TiO2 greatly improved via spatial electric field

被引：28

作者：

Dai, Baoying ^{[1
,2
,3
]}

Zhang, Ling ^{[1
,2
,3
]}

Huang, Hengming ^{[1
,2
,3
]}

Lu, Chunhua ^{[1
,2
,3
]}

Kou, Jiahui ^{[1
,2
,3
]}

Xu, Zhongzi ^{[1
,2
,3
]}

机构：

[1] Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Coll Mat Sci & Engn, Nanjing 210009, Peoples R China

[2] Nanjing Tech Univ, Jiangsu Collaborat Innovat Ctr Adv Inorgan Funct, Nanjing 210009, Peoples R China

[3] Nanjing Tech Univ, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, Nanjing 210009, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2017年 / 403卷

基金：

中国国家自然科学基金;

关键词：

Piezoelectric effect; Photocatalysis; Film; PMN-PT; TiO2; WATER; DEGRADATION;

D O I：

10.1016/j.apsusc.2017.01.151

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Efficient charge separation is quite significant to obtain high photocatalytic performance. In this work, piezoelectric-based composite photocatalyst film PDMS-PMN-PT@TiO2 possessing high recoverability was prepared. The spatial electric field of PMN-PT was introduced into photocatalyst system by ultrasonic wave vibration to accelerate charge separation. Compared with magnetic stirring, ultrasonic wave vibration greatly improved the photocatalytic degradation efficiency of rhodamine B (RhB) over PDMSPMN-PT@Ti02 film by about 55%. A possible improvement mechanism that spatial electric field promotes charge separation was presented herein. The piezoelectric potential output demonstrated the piezoelectricity of composite film. The durability experiments of PDMS-PMN-PT@TiO2 film indicated its great stability over several runs. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：9 / 14

页数：6

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