@article{Qu2013, 
author = {Konggang Qu and Li Wu and Jinsong Ren and Xiaogang Qu},
title = {Enzyme-directed pH-responsive exfoliation and dispersion of graphene and its decoration by gold nanoparticles for use as a hybrid catalyst},
year = {2013},
journal = {Nano Research},
volume = {6},
number = {9},
pages = {693-702},
keywords = {Grapheme, exfoliation, lysozyme, pH-responsive, catalysis, protein},
url = {https://www.sciopen.com/article/10.1007/s12274-013-0345-3},
doi = {10.1007/s12274-013-0345-3},
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.}
}