二维过渡金属材料特殊的各向异性结构使其在电催化领域具有潜在的应用，然而其单一的表面性质和不足的导电性限制了电催化活性的进一步提高。首先采用原位化学氧化在泡沫铜（CF）表面制备CuO纳米带（CuO NBs），进而在其表面修饰纳米银颗粒（Ag NPs），以达到改善导电性和界面性质的目的。结果表明，作为H₂O₂的检测电极，AgNPs/CuO NBs/CF电极在1.5 μmol/L~2.5 mmol/L之间的灵敏度高达181.2 μA/（mmol/L·cm²），该灵敏度高于CuO NBs/CF电极[126.4 μA/（mmol/L·cm²）]和CF电极[98.8 μA/（mmol/L·cm²）]，证明通过Ag NPs修饰可以有效提高CuO NBs的电催化活性。

Two-dimensional transition metals have potential applications in electrocatalysis sector due to their special structural and morphologic anisotropies.However,their monotonous surface properties and insufficient electrical conductivity limit the further improvement of their electrocatalytic activity.At first,CuO nanobelts (CuO NBs) are prepared on copper foam (CF) by in-situ chemical oxidation,and then silver nanoparticles (Ag NPs) are decorated on the nanobelts to improve the conductivity and interface properties.As a detection electrode for H₂O₂,Ag NPs/CuO NBs/CF electrode displays a sensitivity of 181.2 μA·mM^-1·cm^-2 between 1.5 μM and 2.5 mM,which is higher than those of CuO NBs/CF (126.4 μA·mM^-1·cm^-2) and CF electrode (98.8 μA·mM^-1·cm^-2).It demonstrates that the decoration of Ag NPs can effectively improve the electrocatalytic activity of CuO NBs.Moreover,the decoration of precious metals also provides ideas for the improvement of electrocatalytic activity of other two-dimensional transition metal materials.