Tightly-coated and easily recyclable Ag@AgBr-cotton hybrid photocatalyst for organic dye degradation under visible light
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ORIGINAL RESEARCH
Tightly-coated and easily recyclable Ag@AgBr-cotton hybrid photocatalyst for organic dye degradation under visible light Minglei Wang . Maojiang Zhang . Qianhong Gao Mingxing Zhang . Rongfang Shen . Yumei Zhang Guozhong Wu
. Yinjie Liu . . Jiangtao Hu .
Received: 8 November 2019 / Accepted: 10 September 2020 Ó Springer Nature B.V. 2020
Abstract Immobilization of photocatalysts on substrates is an important factor for water purification in practical applications. In this study, an efficient Ag@AgBr photocatalytic coating was attached onto the surface of cotton fabric via radiation-induced graft polymerization and subsequent chemical reactions, and the resultant product was denoted as CotAg@AgBr. The graft chains acted not only as a source of bromine, but also as an intermediate layer to anchor the Ag@AgBr photocatalytic coating via strong electrostatic interactions. The immobilized Ag@AgBr photocatalytic coating exhibited outstanding photocatalytic properties for organic dye degradation under visible light irradiation. Furthermore,
Cot-Ag@AgBr presented high stability and robust durability, which conferred its excellent visible-lightdriven photocatalytic activity after five rounds of photodegradation. After 10 min of ultrasonication, the amount of Ag@AgBr precipitate that leached from the Cot-Ag@AgBr was \ 2%. Therefore, the as-synthesized cotton fabric offered good insight into the functionalization of polymer substrates with photocatalysts and could be useful for advanced wastewater treatment under the cyclic operations.
M. Wang M. Zhang Y. Liu M. Zhang R. Shen J. Hu (&) G. Wu (&) CAS Center for Excellence on TMSR Energy System, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, No. 2019 Jialuo Road, Jiading District, Shanghai 201800, People’s Republic of China e-mail: [email protected]
Q. Gao School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei, Nanjing 210094, Jiangsu Province, People’s Republic of China
G. Wu e-mail: [email protected]
Keywords Radiation-induced grafted polymerization Ag@AgBr Photodegradation Durability
Y. Zhang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Songjiang, People’s Republic of China
M. Wang M. Zhang University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China M. Zhang G. Wu School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, People’s Republic of China
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Cellulose
Introduction Water pollution, driven by worsening of the climate, rapid population growth, industrialization and other factors, represents a great threat for the ecological environment and human development (Li et al. 2017). Various technologies and methods, including absorption (Liu et al. 2019), oxidation (Duan et al. 2018), filtration (Nakamura et al. 2019), and biodegradation (Briones et al. 2018) have been used to address
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