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

被引：33

作者：

Promdet, Premrudee ^{[1
]}

Quesada-Cabrera, Raul ^{[1
]}

Sathasivam, Sanjayan ^{[1
]}

Li, Jianwei ^{[1
]}

Jiamprasertboon, Arreerat ^{[1
,2
]}

Guo, Jian ^{[1
]}

Taylor, Alaric ^{[3
]}

Carmalt, Claire J. ^{[1
]}

Parkin, Ivan P. ^{[1
]}

机构：

[1] UCL, Mat Chem Ctr, Dept Chem, 20 Gordon St, London WC1H 0AJ, England

[2] Suranaree Univ Technol, Inst Sci, Sch Chem, 111 Univ Ave, Muang 30000, Nakhon Ratchasi, Thailand

[3] UCL, Dept Elect & Elect Engn, Torrington Pl, London WC1E 7JE, England

来源：

ACS APPLIED NANO MATERIALS | 2019年 / 2卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

ZnO; photocatalyst; AACVD; polar facets; oxygen vacancies; CHEMICAL-VAPOR-DEPOSITION; THIN-FILMS; SURFACE; PHOTOLUMINESCENCE; NANOCRYSTALS; NANORODS; NANOSTRUCTURES; LUMINESCENCE; DEGRADATION; NANONEEDLES;

D O I：

10.1021/acsanm.9b00326

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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.

引用

页码：2881 / 2889

页数：17

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