Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/105199
Title: Transition-metal-ion-mediated polymerization of dopamine : Mussel-inspired approach for the facile synthesis of robust transition-metal nanoparticle-graphene hybrids
Authors: Yang, Liping
Kong, Junhua
Zhou, Dan
Ang, Jia Ming
Phua, Si Lei
Yee, Wu Aik
Liu, Hai
Huang, Yizhong
Lu, Xuehong
Keywords: DRNTU::Engineering::Materials::Nanostructured materials
Issue Date: 2014
Source: Yang, L., Kong, J., Zhou, D., Ang, J. M., Phua, S. L., Yee, W. A., et al. (2014). Transition-metal-ion-mediated polymerization of dopamine : Mussel-inspired approach for the facile synthesis of robust transition-metal nanoparticle-graphene hybrids. Chemistry - A European journal, 20(25), 7776-7783.
Series/Report no.: Chemistry - A European journal
Abstract: Inspired by the high transition-metal-ion content in mussel glues, and the cross-linking and mechanical reinforcement effects of some transition-metal ions in mussel threads, high concentrations of nickel(II), cobalt(II), and manganese(II) ions have been purposely introduced into the reaction system for dopamine polymerization. Kinetics studies were conducted for the Ni2+–dopamine system to investigate the polymerization mechanism. The results show that the Ni2+ ions could accelerate the assembly of dopamine oligomers in the polymerization process. Spectroscopic and electron microscopic studies reveal that the Ni2+ ions are chelated with polydopamine (PDA) units, forming homogeneous Ni2+–PDA complexes. This facile one-pot approach is utilized to construct transition-metal-ion–PDA complex thin coatings on graphene oxide, which can be carbonized to produce robust hybrid nanosheets with well-dispersed metallic nickel/metallic cobalt/manganese(II) oxide nanoparticles embedded in PDA-derived thin graphitic carbon layers. The nickel–graphene hybrid prepared by using this approach shows good catalytic properties and recyclability for the reduction of p-nitrophenol.
URI: https://hdl.handle.net/10356/105199
http://hdl.handle.net/10220/20462
ISSN: 0947-6539
DOI: 10.1002/chem.201402241
Rights: © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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