Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 1, 2011
Previous Article Next Article

Water photolysis with a cross-linked titanium dioxidenanowire anode

Author affiliations

Abstract

We report efficient water photolysis using a cross-linked TiO2 nanowire anode containing mixed anatase and rutile phases. Under simulated AM 1.5 G illumination, the peak solar energy conversion efficiency is measured to be 1.05%, a new record for TiO2 photoanodes. A photocurrent density as high as 2.6 mA cm−2 is observed when the film thickness is 22 μm. These observations indicate that the high surface area architecture afforded by the cross-linked TiO2 nanowires enables both long optical path lengths and high photon-to-electron conversion efficiency. We also report photocurrent in the visible range due to sub-band gap absorptions, which is enhanced by up to a factor of 10 when the TiO2 nanowires are coated with gold or silver nanoparticles. This enhancement is observed only in thinner (up to 1 μm) TiO2 nanowire films, however, indicating that the effect stems from enhanced light retention by nanoparticle scattering.

Graphical abstract: Water photolysis with a cross-linked titanium dioxide nanowire anode

Back to tab navigation

Supplementary files

Article information


Submitted
28 May 2010
Accepted
02 Aug 2010
First published
10 Sep 2010

Chem. Sci., 2011,2, 80-87
Article type
Edge Article

Water photolysis with a cross-linked titanium dioxide nanowire anode

M. Liu, N. de Leon Snapp and H. Park, Chem. Sci., 2011, 2, 80
DOI: 10.1039/C0SC00321B

Social activity

Search articles by author

Spotlight

Advertisements