Abstract Ag–Cu@FA hydrogel-nanocomposites were prepared by embedding copper nanoclusters (CuNCs) and silver nanoparticles (AgNPs) in the hydrogel matrix of folic acid (FA). This nanocomposites exhibited high catalytic activity for the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) in the presence of H2O2. On the basis of the excellent SERS properties of Ag–Cu@FA, the reaction process can be in situ monitored by SERS.

中文翻译：

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Ag-Cu@FA 水凝胶-纳米复合材料作为 TMB 氧化的催化剂和 SERS 底物

摘要 通过将铜纳米团簇 (CuNCs) 和银纳米颗粒 (AgNPs) 嵌入叶酸 (FA) 水凝胶基质中，制备了 Ag-Cu@FA 水凝胶-纳米复合材料。该纳米复合材料在 H2O2 存在下对 3,3',5,5'-四甲基联苯胺 (TMB) 的氧化表现出很高的催化活性。基于 Ag-Cu@FA 优异的 SERS 特性，可以通过 SERS 原位监测反应过程。