An investigation of the mimetic enzyme activity of two-dimensional Pd-based nanostructures.
An investigation of the mimetic enzyme activity of two-dimensional Pd-based nanostructures.
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DOI：
10.1039/c5nr05675f
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发表时间：
2015-11
期刊：
影响因子：
6.7
通讯作者：
Jingping Wei;Xiaolan Chen;Saige Shi;Shiguang Mo;N. Zheng
中科院分区：
文献类型：
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作者：
Jingping Wei;Xiaolan Chen;Saige Shi;Shiguang Mo;N. Zheng
在这项工作中，我们研究了二维（2D）钯基纳米结构（例如Pd纳米片，Pd@Au和Pd@Pt纳米片）的模拟酶活性，发现它们具有固有的过氧化物酶，氧化酶和过氧化氢酶样活性。这些纳米结构能够激活过氧化氢或溶解氧，用于催化有机底物的氧化，并分解过氧化氢以产生氧气。更系统的研究表明，这些Pd基纳米材料的过氧化物酶样活性是高度结构和组成依赖性的。其中，Pd@Pt纳米片表现出最高的类过氧化物酶活性。基于这些发现，Pd基纳米结构被应用于H2 O2和葡萄糖的比色检测，以及H2 O2的电催化还原。本工作为二维贵金属纳米结构在生物催化中的应用提供了良好的前景。
In this work, we investigated the mimetic enzyme activity of two-dimensional (2D) Pd-based nanostructures (e.g. Pd nanosheets, Pd@Au and Pd@Pt nanoplates) and found that they possess intrinsic peroxidase-, oxidase- and catalase-like activities. These nanostructures were able to activate hydrogen peroxide or dissolved oxygen for catalyzing the oxidation of organic substrates, and decompose hydrogen peroxide to generate oxygen. More systematic investigations revealed that the peroxidase-like activities of these Pd-based nanomaterials were highly structure- and composition-dependent. Among them, Pd@Pt nanoplates displayed the highest peroxidase-like activity. Based on these findings, Pd-based nanostructures were applied for the colorimetric detection of H2O2 and glucose, and also the electro-catalytic reduction of H2O2. This work offers a promising prospect for the application of 2D noble metal nanostructures in biocatalysis.