The solid-solid interface: Explaining the high and unique photocatalytic reactivity of TiO2-based nanocomposite materials

Gonghu Li, Kimberly A Gray*

*Corresponding author for this work

Research output: Contribution to journalArticle

252 Scopus citations

Abstract

This article reviews the role of solid-solid interface between phases and materials in photocatalytic reactions. We hypothesize that the solid-solid interface is a key structural feature that facilitates charge separation to hinder recombination and enhance photocatalytic efficiency, and may be the locus of defect sites that act as catalytic "hot spots". The focus of this article is TiO2-based photocatalytic materials and we present the work of others and some of our recent work synthesizing, characterizing, and testing TiO2-based nanocomposites, especially mixed-phase titanium dioxide. The implications of this deeper understanding of structure-function relationships to energy applications are also discussed.

Original languageEnglish (US)
Pages (from-to)173-187
Number of pages15
JournalChemical Physics
Volume339
Issue number1-3
DOIs
StatePublished - Oct 15 2007

Keywords

  • Energy applications
  • Nanocomposites
  • Solid-solid interface
  • Titanium dioxide

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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