Synthesis of ZnO鈥揂g Hybrids and Their Gas-Sensing Performance toward Ethanol

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• 作者：Jing Ding ; Junwu Zhu ; Pengcheng Yao ; Jin Li ; Huiping Bi ; Xin Wang
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2015
• 出版时间：September 16, 2015
• 年：2015
• 卷：54
• 期：36
• 页码：8947-8953
• 全文大小：421K
• ISSN：1520-5045

文摘

Herein, we describe a facile surfactant-free method to prepare the ZnO鈥揂g hybrids at room temperature for improving gas-sensing performance toward ethanol. Characterizations indicate that Ag nanoparticles are well deposited on the surface of ZnO nanorods. It is interesting to note that the introduction of only 1 wt % Ag in ZnO鈥揂g hybrids leads to the impressive enhancement in gas-sensing properties of ZnO. Notably, the ZnO鈥揂g hybrids can offer a gas response value of 884.7 toward 1000 ppm of ethanol (approximately 12.6 times higher than pure ZnO nanorods). Meanwhile, the hybrids exhibit excellent stability with only 卤5% fluctuation of the gas response value over a period of 480 cycles. Moreover, the above-mentioned hybrids also exhibit good selectivity (about 4.7鈥?2.9 times greater than that of other tested vapors). The high sensitivity, good selectivity and excellent stability presented by ZnO鈥揂g hybrids make it a potential material for developing an excellent gas-sensing sensor toward ethanol.