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

doi:10.1117/12.861471

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

Chemistry

Research output: Contribution to journal › Article › peer-review

6 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 language	English
Article number	777016
Number of pages	10
Journal	Proceedings of SPIE
Volume	7770
DOIs	https://doi.org/10.1117/12.861471
Publication status	Published - 1 Aug 2010
Event	Solar Hydrogen and Nanotechnology V - San Diego, California, United States Duration: 3 Aug 2010 → 5 Aug 2010

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

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.",

author = "Nadeem, {A M} and Waterhouse, {G I N} and Metson, {J B} and H Idriss",

year = "2010",

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T1 - Hydrogen production by photoreaction of ethanol over Au/TiO2 anatase

T2 - Solar Hydrogen and Nanotechnology V

AU - Nadeem, A M

AU - Waterhouse, G I N

AU - Metson, J B

AU - Idriss, H

PY - 2010/8/1

Y1 - 2010/8/1

N2 - 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.

AB - 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.

U2 - 10.1117/12.861471

DO - 10.1117/12.861471

M3 - Article

SN - 0277-786X

VL - 7770

JO - Proceedings of SPIE

JF - Proceedings of SPIE

M1 - 777016

Y2 - 3 August 2010 through 5 August 2010

ER -

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

Abstract

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