Promdet, P;
Quesada-Cabrera, R;
Sathasivam, S;
Li, J;
Jiamprasertboon, A;
Guo, J;
Taylor, A;
... Parkin, IP; + view all
(2019)
High Defect Nanoscale ZnO Films with Polar Facets for Enhanced Photocatalytic Performance.
ACS Applied Nano Materials
, 2
(5)
pp. 2881-2889.
10.1021/acsanm.9b00326.
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Quesada Cabrera revised ZnO paper - new.pdf - Accepted Version Download (1MB) | Preview |
Abstract
The fabrication of highly efficient photocatalytic thin films has important consequences for self-cleaning, organic pollutant decomposition, and antimicrobial coatings for a variety of applications. Here, we developed a simple synthesis method to produce efficient, high-surface-area zinc oxide (ZnO) photocatalytic films using aerosol-assisted chemical vapor deposition. This approach used mixtures of methanol and acetic acid to promote preferential growth and exposure of polar facets, which favor photocatalytic activity. Interestingly, the initial enhanced efficiency of the films was correlated to structural defects, likely oxygen vacancies, as supported by photoluminescence spectroscopy results. Discussion over the influence of such defects on photocatalytic performance is described, and the need for strategies to develop high-surface-area materials containing stable defects is highlighted.
| Type: | Article |
|---|---|
| Title: | High Defect Nanoscale ZnO Films with Polar Facets for Enhanced Photocatalytic Performance |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/acsanm.9b00326 |
| Publisher version: | https://doi.org/10.1021/acsanm.9b00326 |
| 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: | ZnO, photocatalyst, AACVD, polar facets, oxygen vacancies |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering 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/10083627 |
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