Multilayer flower like MoS2 conjugated with thin layer In(OH)3 for high-performance NOx gas sensor at room temperature

作者：Ikram, Muhammad; Zhao, Yiming; Rehman, Afrasiab Ur; Kan, Kan; Zhang, WeiJun; Zhang, Jiawei; Liu, Yang; Wang, Yang; Shi, Keying^*

来源：Journal of Alloys and Compounds, 2018, 735: 1439-1448.

DOI：10.1016/j.jallcom.2017.11.229

• Multilayers MoS2
• Layer In(OH)(3)
• Flower like morphology
• High response

In this work, thin multilayer of In(OH)(3) successfully decorated on the surface of MoS2 nanosheets (NSs) by simple facile hydrothermal method. MIn-2 with Mo:In mass ratio of 1:0.5 was formed 3D flower-like hierarchical architecture which was made up of MoS2 NSs and In(OH) 3 thin little multilayers. MIn-2 sensor exhibits ultrahigh response of 15.39, and shows ultrafast response time of 1.6 s-100 ppm NOx gas at room temperature (RT), detects NOx concentration as low as 0.1 ppm; It also shows excellent stability at 30 and 5 ppm NOx gas after 8 consecutive weeks. The response of MIn-2 is almost 13 times higher than pure MoS2 NSs. The synergistic effect between flower like MoS2 NSs with thin layer In(OH)(3) restacking effect of MoS2 layer and also ensure the ultrafast response and long life device. This work will provide feasible routes to synthesized MoS2 based highly active gas sensing devices to detect noxious gases.

• 出版日期2018-2-25
• 单位黑龙江大学; 哈尔滨师范大学