Synthesis of Ag_2Se nanomaterial by electrodeposition and its application as cataluminescence gas sensor material for carbon tetrachloride

摘要

In this paper, we presented a carbon tetrachloride gas sensor with strong cataluminescence response based on Ag_2Se nanomaterial, which was synthesized via the electrodeposition on the surface of Al foil by directly using a non-aqueous dimethyl sulfoxide (DMSO) solution with CH_3COOAg and SeCl_4. The deposited Ag_2Se material was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Then, the prepared Ag_2Se material along with the Al foil substrate was employed to design the carbon tetrachloride gas sensor. Under the optimized conditions, the present gas sensor exhibited a broad linear range of 0.9-228 μgmL~(-1), with a limit of detection of 0.3 μgmL~(-1) (S/N = 3). The proposed gas sensor showed good characteristics with high selectivity, fast response and long lifetime.