High Defect Nanoscale ZnO Films with Polar Facets for Enhanced Photocatalytic Performance

P. Promdet; R. Quesada-Cabrera; S. Sathasivam; J. Li; A. Jiamprasertboon; J. Guo; A. Taylor; C.J. Carmalt; I.P. Parkin

doi:10.1021/acsanm.9b00326

High Defect Nanoscale ZnO Films with Polar Facets for Enhanced Photocatalytic Performance

P. Promdet, R. Quesada-Cabrera, S. Sathasivam, J. Li, A. Jiamprasertboon, J. Guo, A. Taylor, C.J. Carmalt, I.P. Parkin

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

36 Citations (Scopus)

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.

Original language	English
Pages (from-to)	2881–2889
Journal	ACS Applied Nano Materials
Volume	2
Issue number	5
DOIs	https://doi.org/10.1021/acsanm.9b00326
Publication status	Published - 3 May 2019

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10.1021/acsanm.9b00326

Cite this

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title = "High Defect Nanoscale ZnO Films with Polar Facets for Enhanced Photocatalytic Performance",

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.",

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T1 - High Defect Nanoscale ZnO Films with Polar Facets for Enhanced Photocatalytic Performance

AU - Promdet, P.

AU - Quesada-Cabrera, R.

AU - Sathasivam, S.

AU - Li, J.

AU - Jiamprasertboon, A.

AU - Guo, J.

AU - Taylor, A.

AU - Carmalt, C.J.

AU - Parkin, I.P.

PY - 2019/5/3

Y1 - 2019/5/3

N2 - 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.

AB - 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.

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DO - 10.1021/acsanm.9b00326

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