镧掺杂二氧化锡中空纳米纤维的静电纺丝制备：对其气敏性能的改进

Electrospinning Preparation of La-Doped SnO₂ Hollow Nanofibers: An Improvement of Their Gas Sensing Properties.

作者信息

Cao Xingxing, Zhu Yabo, Shi Tailong, Lei Jia, Tang Xiaotong, Zhang Dekun

出版信息

J Nanosci Nanotechnol. 2018 Oct 1;18(10):6965-6970. doi: 10.1166/jnn.2018.15464.

DOI:10.1166/jnn.2018.15464

Abstract

SnO2 hollow nanofibers with different amount of La-doped were prepared by electrostatic spinning method. Their composition, morphology and structure were characterized by XRD, SEM, BET and XPS respectively and their gas sensing properties were also investigated. The results showed that the hollow nanofibers with the molar ratio of tin to La of 7% had the best sensitivity to ammonia of 500 ppm at the temperature of 300 °C, and the sensitivity value reached 480, which was 10 times that of pure SnO2. And its response time was also significantly shortened.

摘要

采用静电纺丝法制备了不同La掺杂量的SnO₂中空纳米纤维。分别通过XRD、SEM、BET和XPS对其组成、形貌和结构进行了表征，并对其气敏性能进行了研究。结果表明，锡与La摩尔比为7%的中空纳米纤维在300℃对500 ppm氨气的灵敏度最佳，灵敏度值达到480，是纯SnO₂的10倍。并且其响应时间也显著缩短。