期刊
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
卷 111, 期 -, 页码 104-109出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2017.07.017
关键词
Porous ZnO thin film; Ag nanoparticles; Photocurrent; Photocatalytic properties
资金
- National Natural Science Foundation of China [51102072, 51472003, 51272001, 51572002]
- Natural Science Foundation of Anhui Higher Education Institution of China [KJ2015ZD32, KJ2017A924]
- Anhui University [J01001927, 301005111]
- Foundation of Co-operative Innovation Research Center for Weak Signal-Detecting Materials and Devices Integration Anhui University [Y01008411, WRXH201703]
ZnO thin films were deposited using an electrodeposition method and porous morphologies could be achieved by annealing treatment. A variety of Ag nanoparticles were loaded on the surface of the ZnO thin films. Surface morphology, chemical composition, crystal phase and optical properties were characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), UV vis spectrophotometer and micro-Raman spectroscopy. Evidence of Ag nanoparticles on the Ag-4/ZnO thin film was be verified by the SEM and XPS measurements. The XRD results indicated that the Ag nanoparticles had little effect on crystallinity of the thin films. The photoresponse and photocatalytic results indicated that the photocurrent and photocatalytic performance could be enhanced by moderate Ag nanoparticles modification on the surface of the ZnO thin film. The best photoresponse and photocatalytic activity in Ag-4/ZnO thin film results from the moderate Ag nano particles on the surface of ZnO thin film, which could enhanced separation and suppressed recombination of photogenerated electron-hole pairs.
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