Ultrafast piezo-photocatalytic degradation of organic pollutions by Ag2O/tetrapod-ZnO nanostructures under ultrasonic/UV exposure

doi:10.1039/c6ra13464e

IMR OpenIR

	Ultrafast piezo-photocatalytic degradation of organic pollutions by Ag2O/tetrapod-ZnO nanostructures under ultrasonic/UV exposure
	Sun, Cong 1; Fu, Yongming 1; Wang, Qiang 1; Xing, Lili 1; Liu, Baodan 2; Xue, Xinyu 1
通讯作者	Xing, Lili(xuexinyu@mail.neu.edu.cn) ; Liu, Baodan(baodanliu@hotmail.com) ; Xue, Xinyu(xinglili@mail.neu.edu.cn)
	2016
发表期刊	RSC ADVANCES
ISSN	2046-2069
卷号	6 期号:90 页码:87446-87453
摘要	Ultrafast degradation of organic pollutions has been realized by the piezo-photocatalytic activity of Ag2O/tetrapod-ZnO nanostructures under ultrasonic/UV exposure. Tetrapod-ZnO (T-ZnO) nanostructures are synthesized in mass production by a thermal evaporation method, and Ag2O nanoparticles are uniformly loaded on the whole surface of T-ZnO nanostructures. Under both ultrasonic and UV exposure, Ag2O/TZnO nanostructures can efficiently co-use the mechanical and UV energy to degrade organic pollutions, and the degradation speed is extraordinarily fast. Taking methylene blue (MB) as an example, Ag2O/TZnO nanostructures (2 g L-1) can completely degrade an MB aqueous solution (5 mg L-1) within similar to 2 min under ultrasonic (200 W) and UV (50 W) exposure. Such a degradation rate is much higher than previous results, and has potential applications in sewage treating techniques at the industrial level. In this process, the piezoelectric field of T-ZnO nanostructures and the build-in electric field of Ag2O/T-ZnO heterojunctions can separate the photogenerated electron-hole pairs, lowering the recombination rate and enhancing the photocatalytic activity. The present results can promote the development of sewage treating techniques for environmental improvement.
资助者	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Liaoning Natural Science Foundation ; Program for New Century Excellent Talents in University
DOI	10.1039/c6ra13464e
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[11674048] ; Fundamental Research Funds for the Central Universities[N150505001] ; Fundamental Research Funds for the Central Universities[N140505004] ; Liaoning Natural Science Foundation[2015021009] ; Program for New Century Excellent Talents in University[NCET-13-0112]
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000384232600084
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：64[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/123120
专题	中国科学院金属研究所
通讯作者	Xing, Lili; Liu, Baodan; Xue, Xinyu
作者单位	1.Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110000, Peoples R China
推荐引用方式 GB/T 7714	Sun, Cong,Fu, Yongming,Wang, Qiang,et al. Ultrafast piezo-photocatalytic degradation of organic pollutions by Ag2O/tetrapod-ZnO nanostructures under ultrasonic/UV exposure[J]. RSC ADVANCES,2016,6(90):87446-87453.
APA	Sun, Cong,Fu, Yongming,Wang, Qiang,Xing, Lili,Liu, Baodan,&Xue, Xinyu.(2016).Ultrafast piezo-photocatalytic degradation of organic pollutions by Ag2O/tetrapod-ZnO nanostructures under ultrasonic/UV exposure.RSC ADVANCES,6(90),87446-87453.
MLA	Sun, Cong,et al."Ultrafast piezo-photocatalytic degradation of organic pollutions by Ag2O/tetrapod-ZnO nanostructures under ultrasonic/UV exposure".RSC ADVANCES 6.90(2016):87446-87453.