文献类型：期刊文献

英文题名：Preparation of polypropylene with photothermal conversion and hydrophilicity by one-step impregnation for efficient interfacial water evaporation

作者：Li, Hao[1,2,4];Zhang, Zhaoyang[1,2,4];An, Mengjie[1,2,4];Bai, Gang[3];Duan, Chao[1,2,4];Liu, Yiping[1,2,4];Lu, Ming[1,2,3,4]

机构：[1]Southwest Univ, State Key Lab Resource Insects, Chongqing 400716, Peoples R China;[2]Southwest Univ, Coll Sericulture Text & Biomass Sci, Chongqing 400716, Peoples R China;[3]Shaoxing Univ, Key Lab Clean Dyeing & Finishing Technol Zhejiang, Shaoxing 312000, Zhejiang, Peoples R China;[4]Chongqing Engn Res Ctr Biomat Fiber & Modern Text, Chongqing 400716, Peoples R China

年份：2024

卷号：681

外文期刊名：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录：SCI-EXPANDED(收录号：WOS:001127114500001)、、EI(收录号：20234815130746)、Scopus(收录号：2-s2.0-85177796032)、WOS

基金：This work was financially supported by Chongqing Municipal Edu-cation Commission Foundation (KJZD-K202200206) , Opening Project of Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province (QJRZ2116) , Chongqing Postgraduate Research Innovation Project (CYS23227) , and National Training Program of Innovation and Entrepreneurship for Undergraduates (202310635027) .

语种：英文

外文关键词：Melt-blown polypropylene nonwovens; Hydrophilic modification; Photo-thermal conversion; Interfacial water evaporation

外文摘要：Solar-driven interfacial water evaporation is a technology that is currently attracting significant interest for tackling freshwater scarcity. However, the creation of porous membranes with photothermal conversion and hydrophilicity remains a challenging task. This study utilizes melt-blown polypropylene nonwoven (PP), a substrate with high porosity, low cost and high yield, to prepare evaporation membranes exhibiting photothermal conversion properties. The PP surface was treated with a one-step impregnation method to produce both shell and nanoparticles containing MnO2_x. The addition of MnO2_x grants the PP membranes both photothermal conversion and hydrophilicity simultaneously. Sunlight absorption efficiency of PP membranes covered with MnO2_x (M-PP) is 85.83%, and its hydrophilicity and porosity enable it to form an ultra-thin layer of water during evaporation, promoting rapid escape of vapors. Evaporation rate of M-PP membranes reach 1.02 kg m_ 2 h_ 1, much higher than that of PP and bulk water. In addition, M-PP membranes have excellent corrosion resistance, which is potentially valuable in treating wastewater and desalinating seawater.