Black g-C3N4-based hydrogel for water evaporation and photothermal persulfate activation

IF 11.2 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Wei Huang, Xiyuan Gao, Lei Sun, Haojie Chen, Pengnian Shan, Yu Shen, Shunhong Zhang, Lijing Wang, Changyu Lu, Weilong Shi
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Abstract

Integrating the evaporation of seawater at the interface with the treatment of wastewater presents an encouraging approach to address urgent energy and environmental issues. Nevertheless, the development of dual-function evaporators endowed with synergistic photothermal advanced oxidation catalytic properties presents significant hurdles. In this study, a black g-C3N4/loofah/chitosan (BCN/LF/CS) hydrogel was developed, demonstrating remarkable abilities in absorbing sunlight and converting it thermally. This innovation is intended for solar-driven evaporation and the thermal activation of persulfate (PS), which aids in the degradation of tetracycline (TC) contaminants. Test results demonstrated that under singular sunlight irradiation, BCN/LF/CS hydrogel not only achieves an impressive evaporation rate of 2.5 kg m−2 h−1 but also effectively catalyzes the decomposition of PS, leading to substantial degradation of TC (Concertation: 50 mg/L, PS dose: 0.03 g/L, 86% degradation rate: in 3 h). The research unveils innovative and ingenious methodologies to alleviate freshwater scarcity and address the pressing issue of water pollution which introduces a groundbreaking approach to the development of advanced solar evaporators that seamlessly integrate seawater desalination with sewage purification.

Abstract Image

黑色g- c3n4基水凝胶用于水蒸发和光热过硫酸盐活化
将界面处的海水蒸发与废水处理相结合,为解决紧迫的能源和环境问题提供了一种令人鼓舞的方法。然而,具有协同光热高级氧化催化性能的双功能蒸发器的开发存在重大障碍。本研究制备了一种黑色g-C3N4/丝瓜络/壳聚糖(BCN/LF/CS)水凝胶,具有良好的吸收和热转化能力。这项创新旨在太阳能驱动蒸发和过硫酸盐(PS)的热活化,这有助于四环素(TC)污染物的降解。实验结果表明,在单一阳光照射下,BCN/LF/CS水凝胶不仅蒸发速率达到了惊人的2.5 kg m−2 h−1,而且还能有效催化PS的分解,导致TC的大量降解(浓度为50 mg/L, PS剂量为0.03 g/L,降解率为86%:在3 h内)。这项研究揭示了创新和巧妙的方法,以缓解淡水短缺和解决紧迫的水污染问题,并引入了一种突破性的方法来开发先进的太阳能蒸发器,无缝地将海水淡化与污水净化结合起来。
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来源期刊
Journal of Materials Science & Technology
Journal of Materials Science & Technology 工程技术-材料科学:综合
CiteScore
20.00
自引率
11.00%
发文量
995
审稿时长
13 days
期刊介绍: Journal of Materials Science & Technology strives to promote global collaboration in the field of materials science and technology. It primarily publishes original research papers, invited review articles, letters, research notes, and summaries of scientific achievements. The journal covers a wide range of materials science and technology topics, including metallic materials, inorganic nonmetallic materials, and composite materials.
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