水热法制备V_2O_5掺杂纳米In_2O_3及其气敏性能研究  

Preparation and gas-sensing property of V_2O_5 doped In_2O_3 nanomaterial synthesized by hydrothermal method

作　　者：桂阳海[1,2,3] 张宏忠[1,2,3] 刘贝贝[1] 李凯利[1] 卢永炎 苗赵阳 

机构地区：[1]郑州轻工业学院材料与化学工程学院,郑州450001 [2]中国轻工业污染治理与资源化重点实验室,郑州450001 [3]环境污染治理与生态修复河南省协同创新中心,郑州450001

出　　处：《化工新型材料》2016年第8期102-104,共3页New Chemical Materials

基　　金：国家自然科学基金(21371158);河南省高校创新人才项目(16HASTIT025);中国博士后基金(2015M580638);河南省博士后基金(2015005)

摘　　要：以硝酸铟为原料,采用水热法制备氧化钒(V2O5)掺杂的氧化铟(In2O3)纳米复合材料。利用X射线衍射(XRD)和比表面测试仪对材料的物相结构和比表面积(BET)进行了表征测试。结果表明:制备的In2O3材料都为立方晶相,具有较大的比表面积。V2O5的掺杂提高了对乙醇、苯的灵敏度。复合材料中掺杂V2O50.5%(wt,质量分数)的In2O3气敏元件对乙醇具有较好的气敏性能,3.0V加热电压下对5×10-6乙醇的灵敏度达8.024,响应恢复时间短。The materials of pure and V205 doped nano-sized In203 were synthesized by hydrothermal method. The as synthesized samples were characterized by XRD and BET technologies. The results illustrated that the as-prepared pure In203 has cubic phase and larger specific surface. The materials doped with V2 05 dramatically improved the sensitivity to ethanol and benzene. The sensor based on 0.5wt% V2 05 doped In2 03 had good gas-sensing property to ethanol whose sen- sitivity can reach to 8. 024 to 5 × 10-6 concentration at 3.0V working voltage with shorter response and recover times.

关 键 词：纳米In2O3 V2O5 掺杂 水热 气敏 

分 类 号：TB383.1[一般工业技术—材料科学与工程]