Citation: Luo Zhijun, Qu Lingling, Jia Jianzhong, Wang Jing, Jiang Suying, Wu Zhiren, Wu Xiangyang. TiO₂/EDTA-rich carbon composites: Synthesis, characterization and visible-light-driven photocatalytic reduction of Cr(Ⅵ)[J]. Chinese Chemical Letters, ;2018, 29(3): 547-550. doi: 10.1016/j.cclet.2017.09.025 shu

TiO₂/EDTA-rich carbon composites: Synthesis, characterization and visible-light-driven photocatalytic reduction of Cr(Ⅵ)

Luo Zhijun ^a,b,c ,
Qu Lingling ^a ,
Jia Jianzhong ^a ,
Wang Jing ^a ,
Jiang Suying ^b,c ,
Wu Zhiren ^a,b,c,*,, ,
Wu Xiangyang ^a,*

a.
Jiangsu University, Zhenjiang 212013, China
b.
Engineering Technology Center for Heavy Metal Wastewater Treatment and Recovery, Environmental Protection Department of Jiangsu Province, Yixing 214200, China
c.
Jiangsu ATK Environment Engineering Design and Research Institute Co., Ltd., Yixing 214200, China

Corresponding author: Wu Zhiren, wuzhiren@ujs.edu.cn

Received Date: 23 May 2017
Revised Date: 24 August 2017
Accepted Date: 7 September 2017
Available Online: 8 March 2017

Figures(4)

TiO₂/EDTA-rich carbon composites (TiO₂/EDTA-RC) have been successfully synthesized via a low temperature carbonization process. TiO₂/EDTA-RC exhibits marked absorption of visible light and excellent photoreduction of Cr(Ⅵ) activity under visible light irradiation (λ > 420 nm). Due to the high carboxyl group content and strong coordination ability of EDTA, TiO₂-EDTA complex can be easily fabricated between EDTA incorporated in carbon sheet and titanol group on the surface of TiO₂. TiO₂-EDTA complexes on the surface of TiO₂/EDTA-RC, the LMCT complex, are responsible for the prominent photoreduction of Cr(Ⅵ) properties of TiO₂/EDTA-RC under visible light irradiation. In addition, the unique structure of TiO₂/EDTA-RC is also propitious to the visible-light photocatalytic reduction of Cr(Ⅵ). Carbon sheet of TiO₂/EDTA-RC acts as a supporter. TiO₂ nanoparticles and EDTA homogeneously disperse into the carbon sheet supporter and form the TiO₂-EDTA complexes, which can avoid the aggregation of TiO₂ nanoparticles in the aqueous solution and provide more photocatalytic reaction points for the reduction of Cr(Ⅵ).
- TiO₂,
- Carbon-based materials,
- Nanostructures,
- Photocatalysis,
- Reduction of Cr(Ⅵ)
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沈阳化工大学材料科学与工程学院沈阳 110142

TiO2/EDTA-rich carbon composites: Synthesis, characterization and visible-light-driven photocatalytic reduction of Cr(Ⅵ)

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通讯作者: 陈斌, bchen63@163.com

TiO₂/EDTA-rich carbon composites: Synthesis, characterization and visible-light-driven photocatalytic reduction of Cr(Ⅵ)