One-pot green synthesis of Ag@AgCl nanoparticles with excellent photocatalytic performance. Issue 5 (9th February 2021) - Guo, Xiaoyan
Abstract : Ag@AgCl composites are effective photocatalysts used for degrading organic pollutants, but the limitations of their large-scale production hinder them from having a broad scope of applications. In this study, Ag@AgCl nanoparticles (NPs) with efficient photocatalytic performance were synthesized using a simple and straightforward strategy. Excess chloride (Cl − ) ions were added into a silver nitrate (AgNO3 )/ N, N -dimethylacetamide solution to form [AgCl2 ] − . The solution of [AgCl2 ] − was slowly dropped into a 0.5 wt. % polyvinylpyrrolidone solution to obtain silver chloride (AgCl). Neutral silver ions (silver (0) (Ag 0 )) were produced by the partial decomposition of silver chloride and formed Ag@AgCl under irradiation with visible light. The experimental analysis showed that Ag@AgCl NPs had strong absorption within the range of visible light. They exhibited excellent photocatalytic activity with recyclability for the degradation of methyl orange dyes under visible-light irradiation. The photocatalyst prepared in this study can have practical application in wastewater treatment through the significant degradation of organic pollutants.