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|Title:||Enzyme-directed pH-responsive exfoliation and dispersion of graphene and its decoration by gold nanoparticles for use as a hybrid catalyst|
|Citation:||Nano Research, 2013; 6(9):693-702|
|Publisher:||Springer Berlin Heidelberg|
|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|
|Appears in Collections:||Chemical Engineering publications|
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