Preparation of multifunctional cellulosic fabric based on graphene/TiO 2 nanocoating
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ORIGINAL RESEARCH
Preparation of multifunctional cellulosic fabric based on graphene/TiO2 nanocoating Md Mostafizur Rahman . Dayong Huang . Chinomso M. Ewulonu . Chao Wang . Shigenori Kuga . Min Wu . Yong Huang
Received: 10 August 2020 / Accepted: 26 October 2020 Ó Springer Nature B.V. 2020
Abstract Photocatalysts in powder form commonly cannot have a high photocatalytic efficiency without strong agitation in traditional photocatalytic process. It is also inconvenient for recovery of the photocatalysts in powder form after usage. This consequently, results in a secondary pollution which limits their application in water treatment for heavily polluted natural waterways. In this work, coating GO and TiO2 nanomaterials over large-scale cellulose substrates which can easily float on water was performed in the presence of crosslinker by applying a simple dip-coating method. The photocatalytic activities were evaluated by studying the degradation of two models of organic pollutants, methylene blue and glyphosate under visible
light irradiation. The nanomaterial wrapped substrates endured over 40 times reuse at an optimum photocatalyst concentration of 0.1 g/L GO and 15% TiO2 based on fabric weight. The highest degradation rate was obtained at this point and a further increase in concentration decreased the degradation rate. The efficient degradation of glyphosate by the nanomaterial loaded substrate confirms its industrial application in treating pesticide and herbicide polluted waters. Remarkably, this study has established a feasible practical way for direct degradation of pollutants in lakes or rivers using mechanically floating large-scale cellulose-supported photocatalysts.
Md Mostafizur Rahman and Dayong Huang contributed equally to this work.
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10570-020-03558-z) contains supplementary material, which is available to authorized users. M. M. Rahman D. Huang C. M. Ewulonu C. Wang (&) S. Kuga M. Wu (&) Y. Huang National Engineering Research Center of Engineering Plastics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China e-mail: [email protected] M. Wu e-mail: [email protected]
M. M. Rahman D. Huang C. M. Ewulonu C. Wang M. Wu Y. Huang Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China C. M. Ewulonu Department of Polymer and Textile Engineering, Nnamdi Azikiwe University, P. M. B. 5025 Awka, Nigeria
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Cellulose
Graphic abstract
Keywords Glyphosate pollutant Photocatalyst Cellulose Graphene TiO2
Introduction The growing concern to health care and environmental safety continuously inspiring the manufacture of multifunctional textiles for direct applications in human health care and safety (Onar et al. 2007). Cellulose is a renewable resource for environmentally friendl
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