We report herein, an in-situ synthesis of Ag/Co₃O₄ anchored on reduced graphene oxide (rGO) nanocomposite. The Ag/Co₃O₄ -rGO is considered to be a simple, recyclable and durable photocatalyst for hydroxylation of benzene and oxidative esterification of aldehyde via CH activation using visible light irritation. One-pot hydrothermal synthesis route was explored via homogeneous chemical precipitation using urea as both hydroxylation agent and reducing agent for graphene oxide. The polyethylene glycol also served as a surfactant and well as the reducing agent for Ag (I). It was observed that 2−10 nm sized Ag-nanoparticles supported on 20–60 nm-sized Co₃O₄ decorated along with the surface of reduced graphene oxide. The as-synthesized nanocomposite efficiently catalyzed hydroxylation of benzene reaction with 99 % conversion of benzene and 96 % phenol selectivity. Similarly, the esterification of aldehyde could be achieved with 86 % aldehyde conversion under room temperature.

我们在此报告了锚定在还原的氧化石墨烯（rGO）纳米复合材料上的Ag / Co ₃ O ₄的原位合成。Ag / Co ₃ O ₄ -rGO被认为是一种简单，可回收且耐用的光催化剂，用于通过可见光刺激下的C H活化来进行苯的羟基化和醛的氧化酯化。通过使用尿素作为氧化石墨烯的羟基化剂和还原剂进行均相化学沉淀，探索了一锅法水热合成路线。聚乙二醇还用作表面活性剂以及Ag（I）的还原剂。观察到2-10 nm大小的银纳米颗粒负载在20-60 nm大小的Co _3上O ₄与还原的氧化石墨烯的表面一起装饰。合成后的纳米复合材料有效地催化了苯反应的羟基化，苯的转化率为99％，苯酚的选择性为96％。类似地，在室温下，醛的酯化可以实现86％的醛转化率。