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Issue 7, 2015
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Sub-5 nm porous nanocrystals: interfacial site-directed growth on graphene for efficient biocatalysis

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Abstract

The direct production of macromolecular scale (sub-5 nm) porous nanocrystals with high surface area has been a considerable challenge over the past two decades. Here we report an interfacial site-directed capping agent-free growth method to directly produce porous ultrasmall (sub-5 nm), fully crystalline, macromolecular scale nanocrystals. The porous sub-5 nm Prussian blue nanocrystals exhibit uniform sizes (∼4 ± 1 nm), high surface area (∼855 m2 g−1), fast electron transfer (rate constant of ∼9.73 s−1), and outstanding sustained catalytic activity (more than 450 days). The nanocrystal-based biointerfaces enable unprecedented sub-nanomolar level recognition of hydrogen peroxide (∼0.5 nM limit of detection). This method also paves the way towards the creation of ultrasmall porous nanocrystals for efficient biocatalysis.

Graphical abstract: Sub-5 nm porous nanocrystals: interfacial site-directed growth on graphene for efficient biocatalysis

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Supplementary files

Article information


Submitted
06 Mar 2015
Accepted
13 Apr 2015
First published
14 Apr 2015

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2015,6, 4029-4034
Article type
Edge Article
Author version available

Sub-5 nm porous nanocrystals: interfacial site-directed growth on graphene for efficient biocatalysis

B. Kong, X. Sun, C. Selomulya, J. Tang, G. Zheng, Y. Wang and D. Zhao, Chem. Sci., 2015, 6, 4029
DOI: 10.1039/C5SC00819K

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