【作者】 郭伟； 詹自立； 钟克创； 高胜国；

【Author】 GUO Wei, ZHAN Zi-li, ZHONG Ke-chuang, GAO Sheng-guo( Chem . Inst. , Zhengzhou Univ. , Zhengzhou 450002, China ; He’nan Hanwei Electr.Co.,Ltd., Zhengzhou 450005, China)

【机构】 郑州大学化工学院； 河南汉威电子有限公司；

【摘要】 通过在不同比例纳米ZnO和纳米SnO2混合烧结粉体中掺杂贵金属催化剂的方法,研制了对低浓度酒精蒸气具有高灵敏度的酒敏元件.实验结果表明,在w(ZnO)=2%的SnO2复合敏感材料中掺杂贵金属Au可大幅度提高元件对低浓度酒精蒸气的灵敏度,并对同等浓度下的液化气具有较好的选择性.采用浸泡提拉法所制薄膜元件在响应恢复时间及抗温、湿度变化干扰方面,性能较厚膜元件有所提高.更多还原

【Abstract】 Through adulterating the sinter powder mixture of nanometer ZnO and Sn02,with the noble metal catalyzer, we developed alcohol sensor to low concentration alcohol with high sensitivity. The testing results show that SnO2- based sensing material, which contains 2% ZnO and noble metal catalyzer Au can promote its sensitivity to alcohol greatly. Under the same concentration of gasolme and LPG, the sensor has good selectivity to alcohol.In addition,compared to the thick-film sensor,the thin-film sensor from the dipping and pulling process has some promotion in response time,and resistant dependency to temperature and humidity.更多还原