Facile in situ synthesis of silver nanocomposites based on cellulosic paper for photocatalytic applications
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RESEARCH ARTICLE
Facile in situ synthesis of silver nanocomposites based on cellulosic paper for photocatalytic applications Zhengqiu Yuan 1,2,3 & Huizhi Yang 1 & Pan Xu 4 & Chengfeng Li 1 & Jian Jian 1 & Jianxian Zeng 1 & Lingwei Zeng 1 & Yuguang Sui 1 & Hu Zhou 1 Received: 23 March 2020 / Accepted: 16 September 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract In this work, various photocatalysts were synthesized with an impregnation-precipitation process to in situ decorate Ag-based nanoparticles (NPs, including Ag3PO4, AgCl, Ag2O, and Ag2CO3) on the cellulosic paper. The structure and properties of the Ag-based composites were characterized by scanning electron microscopy, X-ray diffraction, transmitting electron microscopy, UV-vis diffuse reflectance spectra, and photocatalysis testing. The results showed that cellulosic paper is an efficient carrier which is feasible to grasp NPs due to the cellulosic nanofiber-network microstructure. Among the obtained samples, Ag2CO3 and AgCl NPs on cellulosic paper displayed high photocatalytic activity for the degradation of methyl orange under ultraviolet and visible light. However, photo lability of Ag2CO3 limits its recyclable. AgCl showed a better reutilization with the assistance of a surface plasmon resonance effect by Ag NPs that were grown in situ on the AgCl NPs, which formed Ag@AgCl nanocomposite structure. The photocatalytic activity of the AgCl/cellulosic paper decreased only slightly after three runs of photodegradation of methyl orange. The possible mechanism for photocatalysis was proposed. This work may provide a new method for the design of silver-based NPs/cellulosic paper nanocomposite photoreactors with favorable photocatalytic activities for industrial applications. Keywords Cellulosic paper . Silver . Ag@AgCl . Nanocomposite . Photocatalysis
Introduction
Responsible editor: Sami Rtimi Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11356-020-10900-2) contains supplementary material, which is available to authorized users. * Jian Jian [email protected] * Hu Zhou [email protected] 1
School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
2
CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Guangzhou 510640, China
3
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
4
School of Chemical Engineering, Xiangtan University, Xiangtan 411105, People’s Republic of China
With the rapid industrial development in the past few decades, human economic construction has experienced unprecedented prosperity. However, it is followed by a series of serious environmental pollution problems. For instance, the industrial wastewater containing organic pollutants has been discharged into the natural ecosystem, resulting in severe threats to the natural ecosystem and human health (Jones et al. 2015). Photocatalytic technology is a highly promising method for degradatio
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