Peptide Cross-linkers: Immobilization of Platinum Nanoparticles Highly Dispersed on Graphene Oxide Nanosheets with Enhanced Photocatalytic Activities

• DOI: 10.1021/acsami.6b16765
• Publication Date: 2017-03-02T21:56:09Z
• Authors: Tsukasa Mizutaru; Galina Marzun; Sebastian Kohsako...; Stephan Barcikowski; Dachao Hong; Hiroaki Kotani; Takahiko Kojima; Takahiro Kondo; Junji Nakamura; Yohei Yamamoto
• Keywords: Nanosheet; Platinum nanoparticles

For exerting potential catalytic and photocatalytic activities of metal nanoparticles (MNPs), immobilization MNPs on a support medium in highly dispersed state is desired. In this Research Article, we demonstrated that surfactant-free platinum (PtNPs) were efficiently immobilized graphene oxide (GO) nanosheets by utilizing oligopeptide β-sheets as cross-linker. The fluorenyl-substituted peptides designed to form β-sheets, where metal-binding thiol groups protonated positively charged amino are integrated the opposite sides surface β-sheet, which bridge PtNPs GO nanosheet. comparison PtNP/GO composite without peptide linker, PtNP/peptide/GO ternary complex exhibited excellent dye degradation activity via electron transfer from PtNP simultaneous hole oxidized dye. Furthermore, showed photoinduced hydrogen evolution upon visible light irradiation using scavenger. This research provides new methodology for development materials bottom-up strategy basis self-assembling features biomolecules.