The synthesis of nano-structure AgBiSe2 is followed by solution chemical synthesis, in which Se and anhydrous ethylenediamine are first mixed and kept at 150℃. Then, after about half an hour, the solvent completely evaporates and a large amount of black materials are obtained. Then, with stirring at room temperature, 20ml of ethylene glycol, 30ml of glycerin, 1.5mmol of silver nitrate and 1.5mmol of silver tribromide were added into the beaker in turn. Then, the mixture was kept in a polytetrafluoroethylene autoclave at about 180.d egree. C. for 24 hours, and washed and dried to obtain the desired product.
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