Hydrothermal growth of highly oriented single crystalline Ta2O5 nanorod arrays and their conversion to Ta3N5 for efficient solar driven water splitting

Zixue Su; Lei Wang; Sabina Grigorescu; Kiyoung Lee; Patrik Schmuki

doi:10.1039/c4cc05673f

Hydrothermal growth of highly oriented single crystalline Ta2O5 nanorod arrays and their conversion to Ta3N5 for efficient solar driven water splitting

Chem Commun (Camb). 2014 Dec 21;50(98):15561-4. doi: 10.1039/c4cc05673f. Epub 2014 Oct 30.

Authors

Zixue Su¹, Lei Wang, Sabina Grigorescu, Kiyoung Lee, Patrik Schmuki

Affiliation

¹ Department of Materials Science and Engineering, WW4-LKO, University of Erlangen-Nuremburg, Martensstr. 7, D-91058 Erlangen, Germany. schmuki@ww.uni-erlangen.de.

PMID: 25357012
DOI: 10.1039/c4cc05673f

Abstract

We grow vertically aligned single crystalline Ta2O5 nanorod arrays that can be converted to Ta3N5 nanorod arrays by nitridation. Combined with cobalt phosphate (Co-Pi) as a co-catalyst, such Ta3N5 nanorod photoanodes can yield photocurrent densities of ∼3.6 mA cm(-2) at 1.23 VRHE and ∼8.2 mA cm(-2) at 1.59 VRHE under AM 1.5G (100 mW cm(-2)) irradiation.