To What Extent Do Graphene Scaffolds Improve the Photovoltaic and Photocatalytic Response of TiO2 Nanostructured Films?

Yun Hau Ng, Ian V. Lightcap, Kevin Goodwin, Michio Matsumura, Prashant V. Kamat

Research output: Contribution to journalArticlepeer-review

389 Scopus citations

Abstract

Graphene-TiO2 nanocomposites synthesized via a solution-based method involving photocatalytic reduction of graphene oxide have been employed as photoanodes. Nearly 90% enhancement in the photocurrent is seen as reduced graphene oxide serves as electron collector and transporter. Additionally, the graphene-TiO2 nanocomposite electrodes exhibit significant activity for the complete photocatalytic decomposition of 2,4-dichlorophenoxyacetic acid (2,4-D). Combined with safe, solution-based synthetic practices, the promising photocurrent and photocatalytic degradation rates provide the framework and motivation for the implementation of graphene-TiO2 nanocomposites on larger scales.

Original languageEnglish (US)
Pages (from-to)2222-2227
Number of pages6
JournalJournal of Physical Chemistry Letters
Volume1
Issue number15
DOIs
StatePublished - Aug 5 2010

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