Hydrogen production by photoreaction of ethanol over Au/TiO2 anatase: The effect of TiO2 particle size

A M Nadeem, G I N Waterhouse, J B Metson, H Idriss

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The work presents the photo-catalytic reactions of ethanol over Au particles deposited on TiO2 anatase nano- (≤ 10 nm) and micro- (ca. 0.15 μm) particle catalysts. The Au particles are of uniform and similar dimension (mean particle size = ca. 5 nm and 7 nm on the microand nano-sized TiO2, respectively). XPS Au4f indicated that in both cases Au particles are present in their metallic state with no evidence of charge transfer to (or from) the semiconductor. Liquid slurry photoreaction indicated the production of hydrogen with a rate ≈ 2 L/kgCatal.min on 2 wt. % Au/TiO2 anatase nano-particles under UV photo irradiation of comparable intensity to solar radiation. While the reaction rate per unit mass was lower on the micro-sized Au/TiO2 it simply scaled up to an equivalent rate for the nano-sized Au/TiO2 catalyst when normalised by unit area.
Original languageEnglish
Article number777016
Number of pages10
JournalProceedings of SPIE
Volume7770
DOIs
Publication statusPublished - 1 Aug 2010
EventSolar Hydrogen and Nanotechnology V - San Diego, California, United States
Duration: 3 Aug 20105 Aug 2010

Fingerprint Dive into the research topics of 'Hydrogen production by photoreaction of ethanol over Au/TiO2 anatase: The effect of TiO2 particle size'. Together they form a unique fingerprint.

Cite this