摘要
为提高基于WO_(3)纳米材料的气体传感器的氢敏性能,通过物理混合、负载和掺杂的方法制备了3种基于Co_(3)O_(4)/WO_(3)复合气敏材料的氢气传感器,并对其响应机理和分散模型进行了探究。其中基于Co掺杂WO_(3)复合气敏材料的氢气传感器的性能最佳:在工作温度为230℃时,1%的氢气响应值可达50%,响应时间仅约6 s,同时具有良好的选择性,对甲烷、丁烷以及一些有机蒸气(甲醇、乙醇)响应较差。因此,基于Co掺杂WO_(3)复合气敏材料的氢气传感器十分适合检测加油加氢混合站的氢气泄漏。
In order to improve the hydrogen sensitivity properties of gas sensors based on WO_(3) nanomaterials,three kinds of hydrogen sensors based on Co_(3)O_(4)/WO_(3) composite gas sensing materials were prepared by physical mixing,loading and doping,and their response mechanism and dispersion model were explored.The hydrogen sensor based on Co doped WO_(3) composite gas sensing material had the best performance:when the working temperature was 230℃,the response value of 1%hydrogen could reach 50%,and the response time was only about 6 s.It has good selectivity and poor response to methane,butane and some organic vapors(methanol and ethanol).Therefore,the hydrogen sensor based on Co doped WO_(3) composite gas sensitive material was very suitable for detecting hydrogen leakage in the refueling and hydrogenation mixing station.
作者
安飞
王浩志
朱亮
冯俊杰
肖安山
An Fei;Wang Haozhi;Zhu Liang;Feng Junjie;Xiao Anshan(State Key Laboratory of Safety and Control for Chemicals,SINOPEC Research Institute of Safety Engineering Co.,Ltd.,Shandong,Qingdao,266104)
出处
《安全、健康和环境》
2022年第9期27-32,共6页
Safety Health & Environment
基金
国家自然科学基金(52003297),基于三维石墨烯/金属氧化物的自加热型气体传感器制备及其硫化氢气敏性能研究。
