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Transparent ultrathin SiO_(2) nanowire aerogel displaying novel properties when interacting with water:A promising versatile functional platform

查看全文 作　　者：Jingbo [1]He;Churong [2]Ma;Jin [1]Yang;Xiaobin [1]Zou;Bo [1]Sun;Yong [1]Sun;Chengxin [1]Wang 高影响力作者 机构地区：[1]State Key Laboratory of Optoelectronic Materials and Technologies,School of Materials Science and Engineering,Sun Yat-sen(Zhongshan)University,Guangzhou 510275,China;[2]Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications,Institute of Photonics Technology,Jinan University,Guangzhou 511443,China高影响力机构 出　　处：《Fundamental Research》索引2023年第3卷第1期,共8页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China(U1801255,51772339);Fundamental Research Funds for the Central Universities(18lgpy05). 摘　　要：With low density,high porosity,and outstanding physicochemical stability,ceramic nanowire aerogels and sponges exhibit various interesting properties.Herein,an ultrathin silica nanowire aerogel(SiO_(2)NWsA)was achieved via a facile chemical vapor deposition route.In addition to good mechanical and thermal performances,properties resulting from active water-aerogel interactions are revealed,i.e.,outstanding transparency,strong capillary effect,enhanced compressive strength(a reversible strain of∼62%),switchable wettability and robust shape retention ability when filled with water.The physical mechanism related to these interesting properties is demonstrated basically according to its unique features(distinctly reduced nanowire diameter,enriched nanoscopic gap channels,and reinforced network).To demonstrate the superiority,an advantageous solar vapor generation system(hydrophilic NWs-A/reduced graphene oxide(rGO)/hydrophobic NWs-A)was obtained by integrating these favorable characteristics,giving rise to remarkably promoted vapor evaporation rate and energy efficiency compared to the rGO hydrophobic NWs-A device.These results contribute to the structural design and functional exploration of nanowire aerogels. 关 键 词：Silica aerogel Nanowire aerogel Capillary effect Flexibility TRANSPARENCY
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