| Title: | Environmental energy enhanced solar-driven evaporator with spontaneous internal convection for highly efficient water purification |
| Author(s): | Cui L; Wang P; Che H; Gao X; Chen J; Liu B; Ao Y; |
| Address: | "Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, No.1, Xikang road, Nanjing 210098, China. Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR 999077, China. Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, No.1, Xikang road, Nanjing 210098, China. Electronic address: andyao@hhu.edu.cn" |
| DOI: | 10.1016/j.watres.2023.120514 |
| ISSN/ISBN: | 1879-2448 (Electronic) 0043-1354 (Linking) |
| Abstract: | "Solar-driven interfacial evaporation for water purification is limited by the structural design of the solar evaporator and, more importantly, by the inability to separate the water from volatile organic compounds (VOCs) present in the water source. Here, we report a three-dimensional (3D) bifunctional evaporator based on N-doped carbon (CoNC/CF), which enables the separation of fresh water from VOCs by activating PMS during the evaporation process with a VOC removal rate of 99%. There is abundant van der Waals interaction between peroxymonosulfate (PMS) and CoNC/CF, and pyrrolic N is confirmed as the active site for binding phenol, thus contributing to the separation of phenol from water. With the advantageous features of sufficient light absorption, adequate water storage capacity, and spontaneous internal convection flow on its top surface, the 3D evaporator achieves a high evaporation rate under one sun (1 kW/m(2)) at 3.16 kg/m(2)/h. More notably, through careful structural design, additional energy from the environment and water can be utilized. With such a high evaporation rate and satisfactory purification performance, this work is expected to provide a promising platform for wastewater treatment" |
| Keywords: | Convection Phenols *Volatile Organic Compounds Water *Water Purification Environmental energy Internal convection flow Phenol removal Solar-driven interfacial evaporation Water purification; |
| Notes: | "MedlineCui, Lingfang Wang, Peifang Che, Huinan Gao, Xin Chen, Juan Liu, Bin Ao, Yanhui eng England 2023/09/02 Water Res. 2023 Oct 1; 244:120514. doi: 10.1016/j.watres.2023.120514. Epub 2023 Aug 25" |
