Synthesis and Optimum of Silver Selenide Nanopowder via Room Temperature Conversion Method

Abstract

Silver selenide nanopowder was prepared by a room temperature conversion method, in which selenide powder(Se) and ethylenediamine (NH2CH2CH2NH2) were used as precursors. Chemical mechanism were studied by several comparative experiments. It was found that chemical reaction was taken place between Se and Ag ions through ethylenediamine. The influence of the chemical reaction time on the phase and microstructure was investigated. The results showed that the reaction was not completely if the reaction time was lower than 4h, on the contrary, some plane begin to split if the reaction time was longer than 12h. While the size and lattice parameter increase firstly with increasing time and then reduce. The results were discussed and the optimum condition was obtianed.