| Title: | g-C(3)N(4)/MoS(2) based floating solar still for clean water production by thermal/light activation of persulfate |
| Author(s): | Gan Q; Xiao Y; Li C; Peng H; Zhang T; Ye M; |
| Address: | "Zhejiang Key Laboratory of Drinking Water Safety and Distribution Technology, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, PR China; Department of Civil Engineering, The University of Hong Kong, 999077, Hong Kong, China. Zhejiang Key Laboratory of Drinking Water Safety and Distribution Technology, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, PR China. Zhejiang Key Laboratory of Drinking Water Safety and Distribution Technology, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, PR China. Electronic address: yemiao008@zju.edu.cn" |
| DOI: | 10.1016/j.chemosphere.2021.130618 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Linking) |
| Abstract: | "Currently, seawater desalination based on air-water interface solar heating has triggered significant research interests because it effectively makes use of the solar energy and avoids fossil fuel consumption. However, to prevent the volatile organic compounds (VOCs) from volatilizing with water vapor which later will liquefy and enter the condensed freshwater is still a challenge. In this work, a g-C(3)N(4)/MoS(2) based floating solar still (CM-FSS) combined with thermal/light activation of persulfate (PS) at air-water interface was applied for clean freshwater production for the first time. The CM-FSS was composed of a g-C(3)N(4)/MoS(2) top layer for solar absorption, simultaneous thermal/light activation of PS and then VOCs degradation at air-water interface, a floating layer of expandable polyethylene (EPE) foam for heat isolation, and a transport channel of air-laid paper (ALP) for seawater and PS solution delivery. The water evaporation rate of the CM-FSS was measured at 1.23 kg m(-2) h(-1) under 1 kW m(-2), which is 4.09 times higher than that of pure water without an evaporator. With the assistance of g-C(3)N(4)/MoS(2) photocatalytic degradation and thermal/light activation of PS at the air-water interface, a high removal efficiency of a selected model VOCs pollutant of nitrobenzene (NB) could reach to 98.2% in condensed freshwater. Finally, when real seawater samples were employed as source water for solar distillation, the typical water-quality indices such as salinity, turbidity, anions, cations and organics of the condensed freshwater were below the limit values of the Standards for Drinking Water Quality in WHO, US EPA and China" |
| Keywords: | China Molybdenum Sunlight *Water *Water Purification Clean water production Interfacial solar heating Persulfate Solar desalination g-C(3)N(4)/MoS(2); |
| Notes: | "MedlineGan, Qimao Xiao, Yangyi Li, Chenxing Peng, Huan Zhang, Tuqiao Ye, Miaomiao eng England 2021/05/09 Chemosphere. 2021 Oct; 280:130618. doi: 10.1016/j.chemosphere.2021.130618. Epub 2021 Apr 27" |
