Transparent Coating with TiO2 Nanorods for High-performance Photocatalytic Self-cleaning and Environmental Remediation

doi:10.1007/s40242-020-0303-z

Chemical Research in Chinese Universities ›› 2020, Vol. 36 ›› Issue (6): 1097-1101.doi: 10.1007/s40242-020-0303-z

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Transparent Coating with TiO₂ Nanorods for High-performance Photocatalytic Self-cleaning and Environmental Remediation

JIANG Wenshuai, ZONG Xupeng, WANG Xiayan, SUN Zaicheng

Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Biology, Beijing University of Technology, Beijing 100124, P. R. China

Received:2020-09-22 Revised:2020-11-13 Online:2020-12-01 Published:2020-11-18
Contact: ZONG Xupeng, SUN Zaicheng E-mail:sunzc@bjut.edu.cn;xzong@bjut.edu.cn
Supported by:
Supported by the Beijing Municipal High-level Innovative Team Building Program, China(No.IDHT20180504), the Beijing Outstanding Young Scientists Program, China(No.BJJWZYJH0201910005017), the National Natural Science Foundation of China(Nos. 21805004, 21671011, 21872001 and 51801006), the Beijing Natural Science Foundation, China (Nos.KZ201710005002 and 2192005), the China Postdoctoral Science Foundation(No.2018M641133), the Beijing Postdoctoral Research Foundation, China(Nos.2018-ZZ-021, 2020-ZZ-041) and the Chaoyang District Postdoctoral Research Foundation of Beijing, China(No.2018-ZZ-026).

Abstract

Abstract: High-performance self-cleaning coatings are highly desired by the industry and market. Herein, we synthesized two kinds of ultrafine TiO₂ nanocrystals, one is anatase dots with a diameter of 5 nm, and the other is rutile rods with 1.5 nm in width and 7 nm in length. The prepared TiO₂ nanocrystal is highly dispersed and stable in water over a month. The coating can be fabricated via a simple spraying method, displaying excellent optical properties and photocatalytic performance on self-cleaning and surrounding environment remediation. The transmittance of glass remains 80%-90% for visible and near-infrared light after 30 cycles of spray. RhB solution(50 mg/L) was applied to the coating surface and form a solid RhB layer was formed, which can be completely removed in 30 min's light irradiation. RhB aqueous solution(100 mL, 5 mg/L) was purified after 180 min by a 10 cm×10 cmglass, on which the coating was sprayed 30 times. The concentrations of formaldehyde and PM 2.5 in surrounding air displayed a significant decrease along 50 min's monitoring. This high-performance coating shows great potential for constructing functional coating on various substrates for industrial applications.

Key words: TiO₂, Photocatalysis, Transparent coating, Self-cleaning, Environment remediation

JIANG Wenshuai, ZONG Xupeng, WANG Xiayan, SUN Zaicheng. Transparent Coating with TiO₂ Nanorods for High-performance Photocatalytic Self-cleaning and Environmental Remediation[J]. Chemical Research in Chinese Universities, 2020, 36(6): 1097-1101.

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Transparent Coating with TiO₂ Nanorods for High-performance Photocatalytic Self-cleaning and Environmental Remediation

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