传感技术学报2017，Vol.30Issue(12)：1822-1827,6.DOI:10.3969/j.issn.1004-1699.2017.12.007
Ni掺杂SnO2花状微结构的制备及其气敏特性研究
Synthesis of Flower-Like Nickel Doped Tin Oxide and Its Gas Sensing Properties
摘要
Abstract
Pristine SnO2 and 4 mol% Ni-doped SnO2 flower-like microstructures were successfully synthesized by a facile hydrothermal method. The crystal structure and morphology of the samples were characterized by X-ray dif-fraction(XRD),energy dispersive spectroscopy(EDS)and scanning electron microscopy(SEM). Furthermore,gas sensing experiments were conducted on the as-fabricated pristine and Ni-doped SnO2 gas sensors toward methanol. The obtained results demonstrated that the introducing of Ni element can significant enhanced the gas sensing prop-erties of SnO2 microstructure. The measured response of Ni-doped SnO2toward 100×10-6 methanol can reach to 13.0 at the optimum operating temperature of 280 ℃,which is about 2.4 times higher than that of pristine SnO2 . Mean-while,the gas sensor based on Ni-doped SnO2also exhibits fast response/recovery time(~6 s/5 s),low detection limit(1×10-6) and better selectivity to methanol. Finally,the gas sensing mechanism of Ni-doped SnO2 gas sensor was discussed.关键词
气体传感器/Ni掺杂SnO2/水热法/甲醇Key words
gas sensor/Ni-doped SnO2/hydrothermal method/methanol分类
信息技术与安全科学引用本文复制引用
杨洁,王莹,王泽鹏,薛炎,王秀,胡杰..Ni掺杂SnO2花状微结构的制备及其气敏特性研究[J].传感技术学报,2017,30(12):1822-1827,6.基金项目
国家自然科学基金项目(51205274) （51205274）
山西省高等学校科技创新项目(2016137) （2016137）
