Kumar, S;
Durndell, LJ;
Manayil, JC;
Isaacs, MA;
Parlett, CMA;
Karthikeyan, S;
Douthwaite, RE;
... Lee, AF; + view all
(2018)
Delaminated CoAl‐Layered Double Hydroxide@TiO₂ Heterojunction Nanocomposites for Photocatalytic Reduction of CO₂.
Particle & Particle Systems Characterization
, 35
(1)
, Article 1700317. 10.1002/ppsc.201700317.
Preview |
Text
Isaacs_Delaminated CoAl-Layered Double Hydroxide_AAM2.pdf - Accepted Version Download (1MB) | Preview |
Abstract
Photocatalytic reduction offers an attractive route for CO_{2} utilization as a chemical feedstock for solar fuels production but remains challenging due to the poor efficiency, instability, and/or toxicity of current catalyst systems. Delaminated CoAl‐layered double hydroxide nanosheets (LDH‐DS) combined with TiO_{2} nanotubes (NTs) or nanoparticles (NPs) are promising nanocomposite photocatalysts for CO_{2} reduction. Heterojunction formation between visible light absorbing delaminated CoAl nanosheets and UV light absorbing TiO_{2} nanotubes greatly enhances interfacial contact between both high aspect ratio components relative to their bulk counterparts. The resulting synergic interaction confers a significant improvement in photoinduced charge carrier separation, and concomitant aqueous phase CO_{2} photocatalytic reduction, in the absence of a sacrificial hole acceptor. CO productivity for a 3 wt% LDH‐DS@TiO2‐NT nanocomposite of 4.57 µmol g_{cat}^{-1} h^{-1} exhibits a tenfold and fivefold increase over that obtained for individual TiO2 NT and delaminated CoAl‐LDH components respectively and is double that obtained for 3 wt% bulk‐LDH@TiO_{2}-NT and 3 wt% LDH‐DS@TiO2‐NP catalysts. Synthesis of delaminated LDH and metal oxide nanocomposites represents a cost‐effective strategy for aqueous phase CO_{2} reduction.
| Type: | Article |
|---|---|
| Title: | Delaminated CoAl‐Layered Double Hydroxide@TiO₂ Heterojunction Nanocomposites for Photocatalytic Reduction of CO₂ |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/ppsc.201700317 |
| Publisher version: | https://doi.org/10.1002/ppsc.201700317 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | CO_{2}, layered double hydroxides, nanocomposites, photocatalysis, titania |
| 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/10076386 |
Archive Staff Only
 |
View Item |
