Journal
APPLIED SURFACE SCIENCE
Volume 403, Issue -, Pages 9-14Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.01.151
Keywords
Piezoelectric effect; Photocatalysis; Film; PMN-PT; TiO2
Categories
Funding
- National Natural Science Foundation of China [51303079, 51502143]
- Natural Science Foundation of Jiangsu Province [BK20141459, BK20150919]
- Qing Lan Project, Six Talent Peaks Project in Jiangsu Province [XCL-029]
- Project on the Integration of Industry, Education and Research of Jiangsu Province [BY2015005-16]
- Key University Science Research Project of Jiangsu Province [15KJB430022]
- Priority Academic Program Development of the Jiangsu Higher Education Institutions (PAPD)
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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.
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