摘要
文中以In(NO_(3))_(3)·4.5H_(2)O为铟源,KMnO_(4)为锰源,PVP为添加剂,分别以水和无水乙醇为溶剂,通过两步水热法成功合成了In_(2)O_(3)-Mn_(2)O_(3)复合纳米棒。采用XRD、SEM、XPS对复合材料的物相组成、微观形貌和元素价态进行了表征和分析,并将In_(2)O_(3)-Mn_(2)O_(3)复合材料组装成气敏传感器元件进行氢气的气敏性能研究。结果表明,相比于In_(2)O_(3),In_(2)O_(3)-Mn_(2)O_(3)传感器的最佳工作温度降低至325℃,且In_(2)O_(3)-Mn_(2)O_(3)传感器在重复性实验中对氢气具有高灵敏度,优异的选择性、重复性和稳定性。复合材料表面丰富的气体吸附位点和p-n异质结使其具有优异的传感性能。
In_(2)O_(3)-Mn_(2)O_(3)composite nanorods were successfully synthesized by two-step hydrothermal method based on In(NO_(3))_(3)·4.5H_(2)Oas indium source,KMnO_(4) as manganese source,PVP as additive,water and anhydrous ethanol as solvent,respectively.XRD,SEM and XPS were used to characterize and analyze the phase composition,micromorphology and element valence of the composite,and In_(2)O_(3)-Mn_(2)O_(3)composite was assembled into a gas sensor element to study the gas sensitivity of hydrogen.The results show that compared with In_(2)O_(3),the optimal operating temperature of In_(2)O_(3)-Mn_(2)O_(3)sensor is reduced to 325℃,and the In_(2)O_(3)-Mn_(2)O_(3)sensor has high sensitivity to hydrogen,excellent selectivity,repeatability and stability in the repeatability experiment.The rich gas adsorption sites on the surface of the composite and p-n heterojunction make it have excellent sensing properties.
作者
武冉
陈兴泰
刘涛
殷锡涛
赵怡博
WU Ran;CHEN Xingtai;LIU Tao;YIN Xitao;ZHAO Yibo(School of Metallurgy,Northeastern University,Shenyang 110819,China;School of Physics and Optoelectronic Engineering,Ludong University,Yantai 264025,China;College of Science,Northeastern University,Shenyang 110819,China)
出处
《仪表技术与传感器》
CSCD
北大核心
2023年第8期15-19,37,共6页
Instrument Technique and Sensor
基金
国家自然科学基金资助项目(51974072)
中央高校基本科研业务费专项资金资助项目(N2125028)。
