Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/90170
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Type: Journal article
Title: Enzyme-directed pH-responsive exfoliation and dispersion of graphene and its decoration by gold nanoparticles for use as a hybrid catalyst
Author: Qu, K.
Wu, L.
Ren, J.
Qu, X.
Citation: Nano Research, 2013; 6(9):693-702
Publisher: Springer Berlin Heidelberg
Issue Date: 2013
ISSN: 1998-0124
1998-0000
Statement of
Responsibility: 
Konggang Qu, Li Wu, Jinsong Ren, Xiaogang Qu
Abstract: A non-destructive, safe and practical strategy to produce high quality graphene in high yield is urgently required, since this would pave the way for a wide range of applications of graphene in the future. Here we present a pH-responsive water-dispersible method for the exfoliation and functionalization of graphene by using lysozyme. The pH-responsive dispersion of graphene may be useful for the reversible assembly of multicomponent/multifunctional nanohybrid materials and nanoscale electronic devices. More importantly, composites can be easily constructed through the interactions between disulphide groups in lysozyme and gold nanoparticles (AuNPs). The resulting graphene-AuNPs composites show excellent catalytic activity towards reduction of o-nitroaniline by NaBH4. Since lysozyme is low cost and has antibacterial properties, and has been widely used in food preservation, medicine and the pharmaceutical industry, our approach may open a new scalable route for the manufacture of high-quality, nondestructive graphene for practical applications.
Keywords: grapheme
exfoliation
lysozyme
pH-responsive
catalysis
protein
Rights: © Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2013
DOI: 10.1007/s12274-013-0345-3
Appears in Collections:Aurora harvest 2
Chemical Engineering publications

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