Zinc nitrate and dimethyl imidazole were used as raw materials to prepare ZIF-8 by the solvothermal method.In-doped ZnO nanomaterials derived from MOF were synthesized by doping In3+ions.The synthesized samples were characterized by X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),nitrogen adsorption-desorption,etc.The influence of In3+ion doping on the structure,morphology,and properties of materials has been studied.The sensor based on the ZnO nanocomposite doped In+shows significantly improved sensitivity to NO2,with the response value increasing from 75 to 350 for 1 mg/L of NO2 at an operating temperature of 160℃,and the lowest detection limit is 1 μg/L.The preparation method of nanomaterials is simple and has excellent gas sensitive properties,which provides an potential way for highly sensitive detection of NO2 gas.
万方数据