An investigation of the mimetic enzyme activity of two-dimensional Pd-based nanostructures

Jingping Wei; Xiaolan Chen; Saige Shi; Shiguang Mo; Nanfeng Zheng

doi:10.1039/C5NR05675F

An investigation of the mimetic enzyme activity of two-dimensional Pd-based nanostructures†

Jingping Wei,^a Xiaolan Chen,*^a Saige Shi,^a Shiguang Mo^a and Nanfeng Zheng*^a

* Corresponding authors

^a State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials and Engineering Research Center for Nano-Preparation Technology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
E-mail: chenxl@xmu.edu.cn, nfzheng@xmu.edu.cn

Abstract

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.

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DOI: https://doi.org/10.1039/C5NR05675F
Article type: Paper
Submitted: 20 Aug 2015
Accepted: 14 Oct 2015
First published: 16 Oct 2015

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Nanoscale, 2015,7, 19018-19026

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An investigation of the mimetic enzyme activity of two-dimensional Pd-based nanostructures

J. Wei, X. Chen, S. Shi, S. Mo and N. Zheng, Nanoscale, 2015, 7, 19018 DOI: 10.1039/C5NR05675F

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An investigation of the mimetic enzyme activity of two-dimensional Pd-based nanostructures†

Abstract

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An investigation of the mimetic enzyme activity of two-dimensional Pd-based nanostructures

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