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Ultrafast piezo-photocatalytic degradation of organic pollutions by Ag2O/tetrapod-ZnO nanostructures under ultrasonic/UV exposure
Sun, Cong1; Fu, Yongming1; Wang, Qiang1; Xing, Lili1; Liu, Baodan2; Xue, Xinyu1
Corresponding AuthorXing, Lili(xuexinyu@mail.neu.edu.cn) ; Liu, Baodan(baodanliu@hotmail.com) ; Xue, Xinyu(xinglili@mail.neu.edu.cn)
2016
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume6Issue:90Pages:87446-87453
AbstractUltrafast 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.
Funding OrganizationNational Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Liaoning Natural Science Foundation ; Program for New Century Excellent Talents in University
DOI10.1039/c6ra13464e
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000384232600084
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:36[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/123122
Collection中国科学院金属研究所
Corresponding AuthorXing, Lili; Liu, Baodan; Xue, Xinyu
Affiliation1.Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110000, Peoples R China
Recommended Citation
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.
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