摘要
采用静电纺丝法制备In_(2)O_(3)纳米纤维,通过扫描电子显微镜(SEM)、X射线衍射仪(XRD)以及BET比表面积分析仪对不同煅烧条件下得到的In_(2)O_(3)纳米纤维进行了表征分析,并对其进行了乙醇气敏性能研究。结果表明,煅烧温度越高,In_(2)O_(3)结晶度越好,比表面积相应有所增加,对乙醇的灵敏度增加(最高煅烧温度700℃下对体积分数为5×10^(-4)乙醇的灵敏度为35),但恢复时间变长(最低煅烧温度400℃下对体积分数5×10-5乙醇的恢复时间为3 s);随着煅烧时间的增加,材料比表面积减小,对乙醇的灵敏度降低(最短煅烧时间1 h下对体积分数为5×10^(-4)乙醇的灵敏度为43),响应时间变化较小,但恢复时间缩短(最长煅烧时间5 h下对体积分数5×10-5乙醇的恢复时间为6 s)。
In_(2)O_(3)nanofibers were prepared by the electrospinning method.The In_(2)O_(3)nanofibers under different calcination conditions were characterized and analyzed by the scanning electron microscope(SEM),X-ray diffractometer(XRD)and BET specific surface area analyzer.Besides,the ethanol gas sensitive properties of the In_(2)O_(3)nanofibers were studied.The results show that with the increase of the calcination temperature,the crystallinity of In_(2)O_(3)is higher,and the specific surface area and the sensitivity to ethanol increase accordingly(the sensitivity to ethanol with a volume fraction of 5×10^(-4)is 35 at the highest calcination temperature of 700℃),but the recovery time becomes longer(the recovery time of ethanol with a volume fraction of 5×10-5 is 3 s at the lowest calcination temperature of 400℃).With the increase of the calcination time,the specific surface area and the sensitivity to ethanol decrease(the sensitivity to ethanol with a volume fraction of 5×10^(-4)is 43 for the shortest calcination time of 1 h).The response time changes slightly,but the recovery time is shortened(the recovery time to ethanol with a volume fraction of 5×10-5 is 6 s for the longest calcination time of 5 h).
作者
刘子豪
贾翠萍
朱海丰
付强
彭立安
冶小芳
张军
Liu Zihao;Jia Cuiping;Zhu Haifeng;Fu Qiang;Peng Li’an;Ye Xiaofang;Zhang Jun(College of Science,China University of Petroleum(East China),Qingdao 266580,China;College of Materials Science and Engineering,China University of Petroleum(East China),Qingdao 266580,China)
出处
《微纳电子技术》
CAS
北大核心
2021年第8期743-749,共7页
Micronanoelectronic Technology
基金
大学生创新训练计划项目(K20181391,20190491)。
