Journal
HIGH VOLTAGE
Volume 4, Issue 2, Pages 113-121Publisher
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/hve.2019.0018
Keywords
titanium compounds; photodissociation; photocatalysis; photocatalysts; oxidation; dyes; photocatalytic functional material; organic contamination; organic contaminant; auxiliary electric field; photocatalytic effect; UV light strength; photocatalytic degradation effect; photooxidation; methyl orange; electron-hole pairs; TiO2
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Funding
- National Key Research and Development Program of China [2016YFB0900800]
- Fok Ying-Tong Education Foundation, China [151058]
- Fundamental Research Funds for the Central Universities [2019MS011]
- Young Elite Scientists Sponsorship Program by CAST
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The accumulation of contaminants on the electrical devices could adversely affect the operation. The present work used photocatalytic functional material to coat on the surface of the electrical devices to prevent the influence of organic contamination. This kind of material was mainly composed of TiO2 that can remove the contamination by the effect of photooxidation. The photocatalysis was affected by the strength of UV light and electric field. In the experiment, methyl orange (MO) was used as the organic contaminant. The effect of UV light and auxiliary electric field were analysed based on the theoretical simulation. With the stronger UV light, more electron-hole pairs were generated, photocatalytic effect became more pronounced. With the auxiliary electric field, the recombination of electron and hole could be restrained that would increase the productive rate of hole; therefore, more hydroxyl radical will be produced to degrade MO.
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