A lead-free K2CuBr3 microwires-based humidity sensor realized via QCM for real-time breath monitoring was written by Chang, Qijie;Wu, Daofu;Huang, Yanyi;Liang, Chengyao;Liu, Libo;Liu, Huanbin;He, Yong;Huang, Qiang;Qiu, Jing;Tang, Xiaosheng. And the article was included in Sensors and Actuators, B: Chemical in 2022.Formula: ClLi The following contents are mentioned in the article:
Halide perovskites have recently emerged as potential humidity-detection materials due to their excellent chem. and phys. properties. However, the toxicity of Pb and environmental instability of the lead halide perovskites restrict the application in humidity detection. Herein, a lead-free K2CuBr3 microwires-based quartz crystal microbalance (QCM) humidity sensor was investigated, and the application in human respiratory monitoring was developed. Coupling the high humidity sensitivity of K2CuBr3 with the high mass change sensitivity of QCM, the lead-free K2CuBr3 coated QCM humidity sensor exhibited excellent logarithmic linearity response (R2 = 0.98626, 11-95% RH). In addition, the sensor demonstrated excellent repeatability, fast response/recover time (10.63 s/4.31 s), and considerable stability. Moreover, the Fourier transform IR spectra (FTIR) and Langmuir adsorption model were applied to reveal the corresponding humidity sensing mechanism. The results indicate the lead-free K2CuBr3-based QCM sensor reported in this work could be a promising candidate for real-time breath monitoring. This study involved multiple reactions and reactants, such as Lithium chloride (cas: 7447-41-8Formula: ClLi).
Lithium chloride (cas: 7447-41-8) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.Formula: ClLi
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics