Herein, a novel approach is reported to design metallodielectric silica (SiO₂) supported Turkevich silver nanoparticles (Ag NPs) for direct fabrication of SiO₂/Ag nanocomposites (NCs). The technique utilizes electrostatic interaction of ex situ synthesized amine-functionalized positively-charged SiO₂ NPs and citrate-capped negatively-charged Ag NPs. The formation of nanoparticles was confirmed using various analytical techniques and explored for photocatalytic degradation of methyl orange (MO) at ambient temperature under sunlight irradiation. SiO₂/Ag-NCs showed significant degradation of MO (94.50% in 40 min) with an estimated apparent degradation rate of 6.9 ×10⁻² min⁻¹, can be attributed to efficient charge separation by Ag NPs decorated on SiO₂ NPs. This strategy may offer innovative considerations for the design of photocatalyst/carrier nanocomposites.

本文中，报道了一种新颖的方法来设计金属介电二氧化硅（SiO ₂）支撑的Turkevich银纳米颗粒（Ag NPs），用于直接制造SiO ₂ / Ag纳米复合材料（NCs）。该技术利用了异位合成的胺官能化的带正电的SiO ₂ NPs和柠檬酸盐封端的带负电的Ag NPs的静电相互作用。使用各种分析技术确认了纳米颗粒的形成，并探索了在环境温度下阳光照射下甲基橙（MO）的光催化降解。SiO ₂ / Ag-NCs表现出MO的显着降解（40分钟内94.50％），估计表观降解速率为6.9×10 ^-2  min ^-1可以归因于通过装饰在SiO ₂ NP上的Ag NP的有效电荷分离。该策略可以为光催化剂/载体纳米复合材料的设计提供创新的考虑。