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) (Ag⁰)) 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.

中文翻译：

---

一锅绿色合成具有优异光催化性能的Ag@AgCl纳米颗粒

Ag@AgCl复合材料是用于降解有机污染物的有效光催化剂，但其规模化生产的局限性阻碍了其广泛的应用。在这项研究中，使用简单明了的策略合成了具有高效光催化性能的 Ag@AgCl 纳米粒子 (NPs)。将过量的氯 (Cl ^- ) 离子加入硝酸银 (AgNO ₃ )/ N , N-二甲基乙酰胺溶液中以形成 [AgCl ₂ ] ^-。[AgCl ₂ ] ^-溶液缓慢滴入 0.5 wt. %聚乙烯吡咯烷酮溶液得到氯化银（AgCl）。中性银离子（银 (0) (Ag ⁰⁾)) 由氯化银部分分解产生，并在可见光照射下形成 Ag@AgCl。实验分析表明，Ag@AgCl NPs 在可见光范围内具有强吸收。它们表现出优异的光催化活性和可回收性，可在可见光照射下降解甲基橙染料。本研究制备的光催化剂可显着降解有机污染物，在废水处理中具有实际应用价值。