Journal
RSC ADVANCES
Volume 4, Issue 31, Pages 16327-16332Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra00658e
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Funding
- National Natural Science Foundation of China [21035005, 21305113]
- State Key Laboratory of Electroanalytical Chemistry [SKLEAC201312]
- Chongqing Fundamental and Advanced Research Project [cstc2013jcyjA50008]
- Fundamental Research Funds for the Central Universities [XDJK2012C057]
- Research Fund for the Doctor Program of Southwest University [swu111077]
- Chongqing key laboratory (CSTC)
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In this contribution, a new simple and cost-effective strategy for the preparation of hybrids of graphene oxide (GO) and metal nanoparticles (MNPs) through the mediation of polyethyleneimine (PEI) molecules was reported. PEI molecules as cationic polymers could effectively attach onto the surface of GO for further negative MNP adsorption. By this process, gold and silver nanoparticles are assembled on GO with high efficiency. This method has also been successfully applied to the assembly of metal nanoparticles and carbon nanotubes (CNTs), indicating that this method is general. Furthermore, the asprepared graphene oxide/silver nanoparticle (GO/AgNP) hybrids have been used as perfect surface enhanced Raman scattering (SERS) substrates with an enhancement factor of 1.5 Chi 10(5) and successfully applied for the sensitive and selective detection of 6- mercaptopurine (6MP) in pharmaceutical tablets with satisfactory results.
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