Au- ZnFe < sub > 2 < /sub > O < sub > 4 < /sub > hollow microspheres based gas sensor for detecting the mustard gas simulant 2-chloroethyl ethyl sulfide

In this study, based on the morphologies of ZnFe2O4 hollow microspheres, a solvothermal method was adopted to realize different levels of Au loading. Toward 1 ppm of 2-CEES, the gas sensor based on 2 wt.% Au-loaded ZnFe2O4 hollow microspheres exhibited a response sensitivity twice that of the gas sensor based on pure ZnFe2O4; furthermore, the response/recovery times decreased. Additionally, the sensor displayed excellent linear response to low concentrations of 2-CEES, outstanding selectivity in the presence of several common volatile organic compounds, and good repeatability, as well as long-term stability. The Au-loaded ZnFe2O4-based sensor has considerable potential for use in detecting toxic chemical agents and their simulants.PMID:38687414 | DOI:10.1007/s44211-024-00573-z
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - Category: Chemistry Authors: Source Type: research