A Trimode Self-Cleaning Composite Membrane with an Eco-friendly Substrate for Energy-Saving Wastewater Recycling  

作　　者：Yuelin Yu Yongtao Yu Hongyi Wu Jian Shi Hideaki Morikawa Chunhong Zhu 

机构地区：[1]Graduate School of Medicine,Science and Technology,Shinshu University,3-15-1,Tokida,Ueda,Nagano 386-8567,Japan [2]Institute for Fiber Engineering(IFES),Interdisciplinary Cluster for Cutting Edge Research(ICCER),Shinshu University,3-15-1,Tokida,Ueda,Nagano 386-8567,Japan [3]Faculty of Textile Science and Technology,Shinshu University,3-15-1,Tokida,Ueda,Nagano 386-8567,Japan

出　　处：《Advanced Fiber Materials》2024年第5期1495-1508,共14页先进纤维材料（英文）

基　　金：supported by the JSPS KAKENHI(Grant No.JP20H00288).

摘　　要：A separation membrane with low or clean energy costs is urgently required for energy-saving and long-term service since electric energy generated from burning non-renewable resources will gradually cause a burden to the environment.At present,the conventional membrane being used in one mode is critical for a variety of scenarios in real life,which suffers from a trade-off effect,short service life,being difficult to recycle after damage.Herein,we report a trimode purification membrane composed of an eco-friendly polycaprolactone(PCL)substrate and functional graphene dioxide/polyaniline(GO/PANI)particles.Due to the photothermal transfer and photocatalytic properties of GO/PANI blend,the composite membrane can absorb 97.44%solar energy to handle natural seawater or mixed wastewater,which achieves a high evaporation rate of 1.47 kg m^(-2)h^(-1)in solar-driven evaporation mode.For the photocatalytic adsorption-degradation mode,93.22%of organic dyes can be adsorbed and degraded after 12 h irradiation under 1 kW m^(-2).Moreover,electric-driven cross-flow filtration mode as a supplement also shows effective rejection over 99%for organic dyes with a high flux over 40 L m^(-2)h^(-1)bar^(-1).The combination of solar-driven evaporation,photocatalytic adsorption-degradation,and electric-driven cross-flow filtration demonstrates a prospective and sustainable strategy to generating clean water from sewages.

关 键 词：Trimode purification Eco-friendly substrate Self-cleaning and anti-fouling ENERGY-SAVING Seawater desalination 

分 类 号：X703[环境科学与工程—环境工程]