Ultra-High Response Detection of Alcohols Based on CdS/MoS2 Composite

Nanoscale Research Letters

Lei Liu¹  Xueqian Yan¹  Weiye Yang¹  Hui Zhang¹  Yingkai Liu² 

[1] Yunnan Key Laboratory of Opto-Electronic Information Technology, Yunnan Normal University, 650500, Kunming, China;Institute of Physics and Electronic Information, Yunnan Normal University, 650500, Kunming, China;Yunnan Key Laboratory of Opto-Electronic Information Technology, Yunnan Normal University, 650500, Kunming, China;Institute of Physics and Electronic Information, Yunnan Normal University, 650500, Kunming, China;Key Laboratory of Advanced Technique and Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University, 650500, Kunming, China;

关键词: Cadmium sulfide;    Molybdenum disulfide;    Biomimetic framework;    Alcohols detection;    Gas sensor;   

DOI  :  10.1186/s11671-021-03647-3

来源: Springer

【 摘 要 】

Hybrid CdS/MoS2 with branch and leaf shaped structures are successfully synthesized by hydrothermal method. It is applied to detect volatile organic compounds, a basic source of indoor air pollution with deleterious effects on the human health. The sensor based on CdS/MoS2 displays an outstanding response to alcohols among numerous gases. Their response to 100 ppm ethanol and isopropanol reaches 56 and 94, respectively. Benefiting from the dendrite-like biomimetic structure and synergy effect of CdS and MoS2, the sensor exhibits higher response than traditional gas sensor. For multiple alcohols, the limit of detection reached ppb level. In addition, by comparing the response of ethanol, isopropanol, isoamyl alcohol and their mixtures with acetone and methanal, a strong resistance interference is observed. This work proved that the modified detector holds broad promise in the detection of alcohols.

【 授权许可】

CC BY