Photothermal superhydrophobic copper nanowire assemblies: fabrication and deicing/defrosting applications  

作　　者：Siyan Yang Qixun Li Bingang Du Yushan Ying Yijun Zeng Yuankai Jin Xuezhi Qin Shouwei Gao Steven Wang Zuankai Wang Rongfu Wen Xuehu Ma 

机构地区：[1]State Key Laboratory of Fine Chemicals&Frontier Science Center for Smart Materials,School of Chemical Engineering,Dalian University of Technology,Dalian 116024,People’s Republic of China [2]Department of Mechanical Engineering,City University of Hong Kong,Hong Kong 999077,People’s Republic of China [3]Department of Mechanical Engineering,The Hong Kong Polytechnic University,Hong Kong 999077,People’s Republic of China

出　　处：《International Journal of Extreme Manufacturing》2023年第4期472-484,共13页极端制造（英文）

基　　金：financial support from the National Natural Science Foundation of China (51836002 and 52006025);Fundamental Research Funds for the Central Universities (DUT22LAB601 and DUT22LAB610)

摘　　要：Ice and frost buildup continuously pose significant challenges to multiple fields.As a promising de-icing/defrosting alternative,designing photothermal coatings that leverage on the abundant sunlight source on the earth to facilitate ice/frost melting has attracted tremendous attention recently.However,previous designs suffered from either localized surface heating owing to the limited thermal conductivity or unsatisfied meltwater removal rate due to strong water/substrate interaction.Herein,we developed a facile approach to fabricate surfaces that combine photothermal,heat-conducting,and superhydrophobic properties into one to achieve efficient de-icing and defrosting.Featuring copper nanowire assemblies,such surfaces were fabricated via the simple template-assisted electrodeposition method,allowing us to tune the nanowire assembly geometry by adjusting the template dimensions and electrodeposition time.The highly ordered copper nanowire assemblies facilitated efficient sunlight absorption and lateral heat spreading,resulting in a fast overall temperature rise to enable the thawing of ice and frost.Further promoted by the excellent water repellency of the surface,the thawed ice and frost could be spontaneously and promptly removed.In this way,the all-in-one design enabled highly enhanced de-icing and defrosting performance compared to other nanostructured surfaces merely with superhydrophobicity,photothermal effect,or the combination of both.In particular,the defrosting efficiency could approach∼100%,which was the highest compared to previous studies.Overall,our approach demonstrates a promising path toward designing highly effective artificial deicing/defrosting surfaces.

关 键 词：NANOWIRE PHOTOTHERMAL SUPERHYDROPHOBIC DE-ICING DEFROSTING 

分 类 号：TB306[一般工业技术—材料科学与工程]