Jump to main content
Jump to site search

Issue 5, 2018
Previous Article Next Article

Photoexcited charge carrier dynamics of interconnected TiO2 nanoparticles: evidence of enhancement of charge separation at anatase–rutile particle interfaces

Author affiliations

Abstract

The charge carrier kinetics of hydrothermally treated TiO2 nanoparticles, consisting of interconnected anatase and rutile crystallographic forms, was investigated using a heterodyne transient grating technique to obtain direct evidence of the enhancement of charge separation efficiency. We found that surface recombination arising from trapped electrons was retarded, compared with that of P25 TiO2 nanoparticles, with the aid of an increase of particle interfaces. This means that the charge separation efficiency of hydrothermally treated TiO2 nanoparticles is higher than that of P25 TiO2 nanoparticles, to which the enhanced photocatalytic performance of the hydrothermally treated TiO2 nanoparticles could be attributed.

Graphical abstract: Photoexcited charge carrier dynamics of interconnected TiO2 nanoparticles: evidence of enhancement of charge separation at anatase–rutile particle interfaces

Back to tab navigation

Supplementary files

Publication details

The article was received on 09 Nov 2017, accepted on 03 Jan 2018 and first published on 03 Jan 2018


Article type: Paper
DOI: 10.1039/C7CP07563D
Citation: Phys. Chem. Chem. Phys., 2018,20, 3484-3489
  •   Request permissions

    Photoexcited charge carrier dynamics of interconnected TiO2 nanoparticles: evidence of enhancement of charge separation at anatase–rutile particle interfaces

    D. Shingai, Y. Ide, W. Y. Sohn and K. Katayama, Phys. Chem. Chem. Phys., 2018, 20, 3484
    DOI: 10.1039/C7CP07563D

Search articles by author

Spotlight

Advertisements