Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 126, Issue 4, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-020-3460-5
Keywords
Ag-ZnO; Thin film; Photocurrent; Photocatalytic
Funding
- National Natural Science Foundation of China [51701001, 61804039, 51472003, 51572002]
- Academic funding projects for Top Talents in Subjects (Majors) of Universities [gxbjZD31]
- Natural Science Foundation of Anhui Higher Education Institution of China [KJ2019A0734, KJ2019A0736, KJ2017A924, KJ2017A002]
- Natural Science Foundation of Anhui Province [1808085QE126]
- Foundation of Co-operative Innovation Research Center for Weak Signal-Detecting Materials and Devices Integration Anhui University [Y01008411, WRXH201703]
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Ag-ZnO thin films were prepared by a two-step method and then annealed in a vacuum atmosphere at different temperature. It could be seen from the scanning electron microscopy images that the ZnO nanorods collapsed rapidly for the sample annealed at 400 degrees C (Ag-ZnO-400) and the average diameter of Ag nanoparticles increases with the increasing of annealing temperature. Compared to Ag-ZnO, the Ag-ZnO-400 presents the higher surface plasmon resonance absorbance peak, which was attributed to the increasing of the average diameter of silver nanoparticles. The transient photocurrent curves exhibited that the photocurrent density of Ag-ZnO-400 (similar to 0.165 mA/cm(-2)) was twenty time larger than that of the Ag-ZnO (similar to 0.008 mA/cm(-2)). The photocatalytic degradation efficiency of Ag-ZnO-400 catalysts for the methyl orange in aqueous solutions is over 63%.
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