Preparation and Gas Sensitive Properties of Nanometer-Sized SnO_(2)

作     者：Pan Qingyi Dong Xiaowen Xu Jiaqiang Zhang Jianping Shi Liyi 

作者机构：School of Chemicstry and Chemical EngineeringShanghai University Zhengzhou Institute of Light Industry 

出 版 物：《Advances in Manufacturing》 (先进制造进展(英文版))

年 卷 期：1998年第1期

页      面：75-79页

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

主　　题：sol gel nanometer sized tin oxide gas sensitive property 

摘      要：Nanometer sized SnO 2 particles were prepared by a sol gel method using inorganic salt as a precursor material. Its crystallization was investigated by means of TG DTA,IR absorption spectra, X ray diffractometry and TEM as well as its resistivity change and the gas sensitivity varied with temperature were measured in various reducing gas. The results indicate that well crystallized nano sized SnO 2 with size around 15nm can be obtained at annealing temperature 600℃. The activation energy for the growth of nano SnO 2 was calculated to be *** 1 when the annealing temperature was higher than 500℃. The measurements also show that there is a peculiar resistance change varied with temperature for nano SnO *** has relevance to the increase in surface adsorbed oxygen. The selective detectivities to C 4H 10 and petrol can be increased when ruthenium ion was doped in nano SnO 2 as a catalyst and so do the gas sensitivity to CO,CH 4,H 2 etc. when rhodium ion was doped *** detection to the several reducing gas can be realized when the temperature ranged from 260℃ to 400℃.