Facile synthesis of Ag/ZnO heterostructures assisted by UV irradiation: Highly photocatalytic property and enhanced photostability |
| |
| Authors: | Zhongmei Yang Ping Zhang Yong Jiang Wenli Dai |
| |
| Affiliation: | a College of Chemistry, Xiangtan University, Xiangtan 411105, PR China
b Institute of Fundamental Mechanics and Materials Engineering, Xiangtan University, Xiangtan 411105, PR China |
| |
| Abstract: | We report a new method to synthesize Ag/ZnO heterostructures assisted by UV irradiation. The formation of Ag/ZnO heterostructures depends on photogenerated electrons produced by ZnO under UV light to reduce high valence silver. Functional property of the Ag/ZnO heterostructures is evaluated by photodegradation of methylene blue (MB) under UV illumination. Results of photodegradation tests reveal that the optimal photocatalytic activity of as-syntheszied samples is about 1.5 times higher than the pure ZnO synthesized in the same condition or commercial TiO2 (P-25), showing the advantage of the unique structure in the Ag/ZnO heterostructure. Besides, due to the reduced activation of surface oxygen atom, photocatalytic activity of the photocatalysts has no evident decrease even after three recycles. |
| |
| Keywords: | A. Nanostructures A. Semiconductors B. Chemical synthesis C. X-ray diffraction |
| 本文献已被 ScienceDirect 等数据库收录！ |
