水热法制备Co掺杂WO_3气敏材料及其性能研究  

Properties study of Co-doped WO_3 gas-sensing materials prepared by hydrothermal method

作　　者：桂阳海[1,2] 赵建波[1] 王焕新[1] 田俊峰[1] 张永辉[2] 

机构地区：[1]郑州轻工业学院河南省表界面科学重点实验室,河南郑州450002 [2]郑州轻工业学院功能材料研究所,河南郑州450002

出　　处：《电子元件与材料》2012年第12期26-29,共4页Electronic Components And Materials

基　　金：国家自然科学基金资助项目(No.21141005);河南省科技厅基金资助项目(No.122300410299);河南省高等学校青年骨干教师资助计划项目(No.121PPTGG362-3)

摘　　要：采用水热法合成了Co掺杂的纳米WO3气敏材料,研究了不同含量Co掺杂的WO3气敏材料的气敏性能以及环境湿度对其性能的影响。结果表明,少量Co掺杂可以提高WO3的气敏性能,Co掺杂量为质量分数0.8%的WO3基气敏元件对H2S和NOx具有很好的选择性,灵敏度分别高达183.214和1 619.726,并且该元件具有很好的抗湿性。Co-doped nano WO3 gas-sensing materials were prepared through hydrothermal method. The effects of the Co dopant amount and environment humidity on the gas-sensing Characteristics based on the as-synthesized Co-doped WO3 nanomateiats as gas sensors were investigated. The results show that doping a small amount of cobalt can enhance the gas sensitivity of WO3. The sample containing 0.8% （mass fraction） of cobalt possesses excellent selectivity to H2S and NOx, and the sensitivities reach up to 183.214 and 1 619.726, respectively. The sensors are well insensitive to air humidity.

关 键 词：WO3 CO掺杂 水热合成 气敏 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置] TQ174.75[自动化与计算机技术—控制科学与工程]