A novel composite hydrogen sensor based on Pd nanoclusters/TiO2 nanotube arrays

[摘要] A novel composite hydrogen sensor, consisting of Pd nanoclusters/TiO2nanotube arrays, was fabricated and evaluated at room temperature. The Pd nanoclusters layer was deposited on top surface of the nanotube arrays by using a direct current (DC) magnetron sputtering method. Resistive response of the composite sensors to 0.5% hydrogen was measured. Experimental results indicated that the Pd nanoclusters can quickly and continually form or break multiple passages by absorbing or desorbing hydrogen, so that the composite hydrogen sensors have promising hydrogen sensitivity at room temperature.

[发布机构] School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu; 610054, China^1;Department of Electrical and Computer Engineering, Center for Nanoscale Science AndEngineering, University of Kentucky, Lexington; KY; 40506, United States^2

[效力级别] 化学工业 [学科分类] 材料科学（综合）

[关键词] Composite sensors;Direct current magnetron sputtering;Hydrogen sensitivity;Hydrogen sensor;Multiple passage;Nanotube arrays;Top surface