Kumar, S;
Isaacs, MA;
Trofimovaite, R;
Durndell, L;
Parlett, CMA;
Douthwaite, RE;
Coulson, B;
... Lee, AF; + view all
(2017)
P25@CoAl layered double hydroxide heterojunction nanocomposites for CO2 photocatalytic reduction.
Applied Catalysis B: Environmental
, 209
pp. 394-404.
10.1016/j.apcatb.2017.03.006.
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Abstract
Artificial photosynthesis driven by inorganic photocatalysts offers a promising route to renewable solar fuels, however efficient CO2 photoreduction remains a challenge. A family of hierarchical nanocomposites, comprising P25 nanoparticles encapsulated within microporous CoAl-layered double hydroxides (CoAl-LDHs) were prepared via a one-pot hydrothermal synthesis. Heterojunction formation between the visible light absorbing CoAl-LDH and UV light absorbing P25 semiconductors extends utilisation of the solar spectrum, while the solid basicity of the CoAl-LDH increases CO2 availability at photocatalytic surfaces. Matching of the semiconductor band structures and strong donor–acceptor coupling improves photoinduced charge carrier separation and transfer via the heterojunction. Hierarchical P25@CoAl-LDH nanocomposites exhibit good activity and selectivity (>90%) for aqueous CO2 photoreduction to CO, without a sacrificial hole acceptor. This represents a facile and cost-effective strategy for the design and development of LDH-based nanomaterials for efficient photocatalysis for renewable solar fuel production from particularly CO2 and water.
| Type: | Article |
|---|---|
| Title: | P25@CoAl layered double hydroxide heterojunction nanocomposites for CO2 photocatalytic reduction |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.apcatb.2017.03.006 |
| Publisher version: | https://doi.org/10.1016/j.apcatb.2017.03.006 |
| Language: | English |
| Additional information: | © 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Photocatalysis, CO2, Titania, Layered double hydroxide, Nanocomposite |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10053368 |
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