| Title: | A dual-functional hydrogel for efficient water purification: Integrating solar interfacial evaporation with fenton reaction |
| Author(s): | Lv B; Peng Y; Zhao B; Xu Y; Song C; Liu Y; Fan X; |
| Address: | "Marine Engineering College, Dalian Maritime University, Dalian, 116026, China; College of Environmental Science and Engineering, Dalian Maritime University, Dalian, 116026, China. College of Environmental Science and Engineering, Dalian Maritime University, Dalian, 116026, China. Marine Engineering College, Dalian Maritime University, Dalian, 116026, China. Electronic address: zhaobg2008@163.com. Centre for Ports and Maritime Safety, Dalian Maritime University, Dalian, 116026, China. Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China. College of Environmental Science and Engineering, Dalian Maritime University, Dalian, 116026, China. Electronic address: fxf0909@dlmu.edu.cn" |
| DOI: | 10.1016/j.chemosphere.2023.139310 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Linking) |
| Abstract: | "Solar interfacial evaporation is a potential technology to produce clean water due to its simplicity and being driven by renewable clean energy, but it still requires further development to break through the bottleneck of removing volatile organic compounds (VOCs), especially in wastewater treatment. Herein, we proposed a dual-functional hydrogel evaporator that coupled solar interfacial evaporation with Fenton reaction to simultaneously remove VOCs and non-volatile pollutants from water with low energy consumption and high efficiency. The evaporator was composed with beta-FeOOH and polydopamine (PDA) on an electrospun nanofibrous hydrogel. Arising from the PDA with excellent photothermal properties, the evaporator revealed a high light absorption characteristics ( approximately 90%) and photothermal efficiency (83.4%), which ensured a favorable evaporation rate of 1.70 kg m(-2) h(-1) under one solar irradiation. More importantly, benefited from the coupled Fenton reaction, the VOCs removal rate of beta-FeOOH@PDA/polyvinyl alcohol nanofibrous hydrogel (beta-FeOOH@PPNH) reached 95.8%, which was 6.5 times than that of sole solar interfacial evaporation (14.8%). In addition, the evaporator exhibited an outstanding non-volatile pollutant removal capability and stable removal performance for organic pollutants over a long period of operation. The prepared beta-FeOOH@PPNH evaporator provides a promising idea for simultaneous removal of non-volatile pollutants and volatile pollutants performance in long-term water purification" |
| Keywords: | Hydrogels Physical Phenomena *Environmental Pollutants *Volatile Organic Compounds Water *Water Purification Fenton reaction Nanofibrous hydrogel Solar interfacial evaporation Volatile organic compounds Water purification.; |
| Notes: | "MedlineLv, Bowen Peng, Yanling Zhao, Baogang Xu, Yuanlu Song, Chengwen Liu, Yanming Fan, Xinfei eng England 2023/06/25 Chemosphere. 2023 Sep; 336:139310. doi: 10.1016/j.chemosphere.2023.139310. Epub 2023 Jun 22" |
