Ag-decorated ZnO nanorods prepared by photochemical deposition and their high selectivity to ethanol using conducting oxide electrodes

作者：Suo Can; Gao Chaojun; Wu Xuyang; Zuo Yan; Wang Xinchang; Jia Jianfeng^*

来源：RSC Advances, 2015, 5(112): 92107-92113.

DOI：10.1039/c5ra20055e

A novel gas sensor structure is presented in this work. It consists of LaNiO3 thin film electrodes and gas sensitive Ag nanoparticle-decorated ZnO nanorods. ZnO nanorods were successfully synthesized by a facile wet chemical method in aqueous solution at 95 degrees C, and then the ZnO nanorods were decorated with Ag NPs through photochemical deposition. Dielectrophoresis was used to position the Ag-decorated ZnO nanorods on the LaNiO3 electrodes. The as-prepared devices combined the advantages of one-dimensional nanostructure, highly ordered array, the chemical stability of the electrode and Ag decoration, which resulted in a dramatic sensing performance for gas detection. The as-prepared gas sensors have high selectivity to ethanol, as well as improved response and recovery speeds.

• 出版日期2015
• 单位郑州大学