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Rhodium nanoparticles impregnated on TiO2: strong morphological effects on hydrogen production

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Abstract

The effect of the shape of rhodium nanoparticles impregnated on TiO2 on photocatalytic hydrogen generation using methanol as a sacrificial reagent has been investigated by using a simple home-made UV-LED light strip reactor to activate the catalyst surface. For rhodium nanocubes, the normalised rate of H2 production was 22.4 mmol h−1 m−2 at 365 nm and 7.5 mmol h−1 m−2 at 400 nm. The normalised activity/surface area of the studied Rh nanoparticles showed a trend that led to establishing a relationship between the exposed [100] facets and photocatalytic activity. The Rh shape-dependent H2 production follows a trend of cubic > spherical > octahedral, which is associated with a higher surface energy of the Rh nanoparticles.

Graphical abstract: Rhodium nanoparticles impregnated on TiO2: strong morphological effects on hydrogen production

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Article information


Submitted
13 May 2020
Accepted
28 Jun 2020
First published
29 Jun 2020

New J. Chem., 2020, Advance Article
Article type
Paper

Rhodium nanoparticles impregnated on TiO2: strong morphological effects on hydrogen production

B. L. Albuquerque, G. Chacón, M. Nazarkovsky and J. Dupont, New J. Chem., 2020, Advance Article , DOI: 10.1039/D0NJ02419H

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