Nie Guangdi, Zhang Liang, Lu Xiaofeng, Bian Xiujie, Sun Weining, Wang Ce
Alan G. MacDiarmid Institute, Jilin University, Changchun, 130012, P. R. China.
Dalton Trans. 2013 Oct 14;42(38):14006-13. doi: 10.1039/c3dt51489g. Epub 2013 Aug 9.
CuS-graphene nanosheet (GNS) composites with well-defined morphology have been successfully fabricated via a simple one-pot hydrothermal route by using thioacetamide (TAA) as both the sulfur source and reducing agent. The as-prepared CuS-GNS composites with an appropriate content of graphene exhibited an even higher peroxidase-like catalytic activity than pristine CuS nanoparticles in acetate buffer solution (pH = 4.0), which provided a facile method for the colorimetric detection of hydrogen peroxide (H2O2). It was calculated that H2O2 could be detected as low as 1.2 μM (S/N = 3) with a wide linear range from 2.0 to 20.0 μM (R(2) = 0.992), indicating that the as-prepared catalyst as an artificial peroxidase is promising for application in biosensors and environmental monitoring.
通过简单的一锅水热法，以硫代乙酰胺（TAA）作为硫源和还原剂，成功制备了具有明确形态的硫化铜-石墨烯纳米片（GNS）复合材料。所制备的含有适量石墨烯的硫化铜-GNS复合材料在醋酸盐缓冲溶液（pH = 4.0）中表现出比原始硫化铜纳米颗粒更高的类过氧化物酶催化活性，这为过氧化氢（H2O2）的比色检测提供了一种简便方法。据计算，H2O2的检测下限低至1.2 μM（S/N = 3），线性范围宽达2.0至20.0 μM（R(²) = 0.992），表明所制备的催化剂作为人工过氧化物酶在生物传感器和环境监测中具有应用前景。
