Photocatalytic degradation of bisphenol A using titanium dioxide@nanodiamond composites under UV light illumination

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:582

Article

Hunge, Y. M.¹  Yadav, A. A.²  Khan, Sovann¹  Takagi, Kai³  Suzuki, Norihiro^1,4  Teshima, Katsuya⁴  Terashima, Chiaki^1,4,5  Fujishima, Akira¹ 

[1] Tokyo Univ Sci, Photocatalysis Int Res Ctr, Noda, Chiba 2788510, Japan

[2] Yeungnam Univ, Dept Automot Engn, 280 Daehak Ro, Gyongsan 38541, Gyeonbuk, South Korea

[3] ORC Mfg Co Ltd, 4896 Tamagawa, Nagano 3910011, Japan

[4] Tokyo Univ Sci, Res Ctr Space Colony, Noda, Chiba 2788510, Japan

[5] Shinshu Univ, Res Initiat Supra Mat, Wakasato, Nagano 3808553, Japan

关键词: Photocatalytic degradation;    Titanium dioxide;    Nanodiamond;    Composite photocatalyst bisphenol A;   

DOI  :  10.1016/j.jcis.2020.08.102

来源: Elsevier

【 摘 要 】

Different types of organic impurities such as dyes, acids, and alcohols are discharged into potable water sources. The removal of these hazardous organic pollutants from wastewater is an important task glob-ally. However, the conventional methods used to remove organic impurities suffer from low efficiency and recycling problems. Photocatalysis is a promising advanced oxidation process for the degradation of organic compounds in aqueous solution. Titanium dioxide (TiO2) is commonly used as a photocatalyst. However, the wide bandgap of TiO2 means that it is activated by ultraviolet light, which restrains its ability to harvest solar energy. In this study, a simple water-based precipitation method was used to synthesize TiO2@nanodiamond composites. The ability of the composites to degrade bisphenol A as a model organic pollutant was investigated. It was found that 10 ppm of bisphenol A was completely degraded in 100 min by the TiO2@nanodiamond photocatalyst under ultraviolet illumination. (C) 2020 Elsevier Inc. All rights reserved.

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