硫化锡纳米片的简易化学浴合成及其乙醇传感性能

Facile Chemical Bath Synthesis of SnS Nanosheets and Their Ethanol Sensing Properties.

作者信息

Shan Wei, Fu Zhengqian, Ma Mingsheng, Liu Zhifu, Xue Zhenggang, Xu Jiaqiang, Zhang Faqiang, Li Yongxiang

机构信息

CAS Key Lab of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.

Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.

出版信息

Sensors (Basel). 2019 Jun 6;19(11):2581. doi: 10.3390/s19112581.

DOI:10.3390/s19112581

PMID:31174328

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6603679/

Abstract

Tin(II) monosulfide (SnS) nanosheets were synthesized using SnCl•5HO and S powders as raw materials in the presence of HO via a facile chemical bath method. Orthorhombic phase SnS nanosheets with a thickness of ~~100 nm and lateral dimensions of 2~~10 μm were obtained by controlling the synthesis parameters. The formation of a SnO intermediate is key to the valence reduction of Sn ions (from IV to II) and the formation of SnS. The gas sensors fabricated from SnS nanosheets exhibited an excellent response of 14.86 to 100 ppm ethanol vapor when operating at 160 °C, as well as fast response and recovery times of 23 s and 26 s, respectively. The sensors showed excellent selectivity for the detection of ethanol over acetone, methanol, and ammonia gases, which indicates the SnS nanosheets are promising for high-performance ethanol gas sensing applications.

摘要

以SnCl₂•5H₂O和S粉末为原料，在水合肼存在下，通过简便的化学浴法合成了硫化亚锡（SnS）纳米片。通过控制合成参数，获得了厚度约为100 nm、横向尺寸为2~10 μm的正交相SnS纳米片。SnO中间体的形成是Sn离子价态降低（从IV到II）和SnS形成的关键。由SnS纳米片制成的气体传感器在160°C下工作时，对100 ppm乙醇蒸汽表现出14.86的优异响应，响应时间和恢复时间分别为23 s和26 s。该传感器对乙醇的检测表现出对丙酮、甲醇和氨气的优异选择性，这表明SnS纳米片在高性能乙醇气体传感应用中具有广阔前景。