The vital role of reduced graphene oxide in enhanced hydrogen photoproduction with a pyrene-pendant rhodium catalyst and platinum nanoparticles

Sol Ji Park, Soojin Kim, Tikum Florence Anjong, Sung Eun Lee, Jinheung Kim

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A cyclopentadienyl rhodium catalyst derivatized with pyrene was used to study the effects of a reduced graphene oxide (rGO) on visible light-driven photocatalytic hydrogen production using formate and Pt nanoparticles. The pyrene-derivatized rhodium catalyst was immobilized on rGO by π-π stacking interactions. A tight formation of the Rh catalyst on rGO surprisingly enhanced the hydrogen production upon visible light irradiation, in contrast with the results using a thin formation of the catalyst or the unfunctionalized Rh catalyst. Our results also demonstrated that the catalytic stability of the pyrene-functionalized Rh complex dramatically increased when it was immobilized on rGO during the photocatalytic reaction cycle. RGO played a crucial role in efficiently transferring electrons from the Rh(III)-hydrides to the platinum nanoparticles.

Original languageEnglish
Pages (from-to)448-454
Number of pages7
JournalCarbon
Volume94
DOIs
StatePublished - 29 Aug 2015

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