磷铜片表面构建超疏水Cu2O纳米结构及其超疏水-亲水快速转变

摘要

针对热转变材料制备成本高昂的问题,用一种低成本的修饰-加热-再修饰的方法实现了磷铜片表面的浸润性的快速转变.用蒸馏水浸渍的方法在磷铜片表面制备了致密的Cu2O纳米棒,经十二烷基硫醇表面改性后表现出优异的超疏水性能.同时,将制备好的磷铜片在160℃的烘箱保存30 min,该表面浸润性可实现从超疏水到亲水的快速转变,并且转变后的表面经十二烷基硫醇重新修饰后可恢复其超疏水特性.结果表明,制备好的磷铜片在加热过程中产生了大量的RS-SR化合物,RS-SR化合物经乙醇冲洗脱离磷铜片表面导致表面碳含量降低,最终导致表面浸润性的转变.该工作提供了一种制备热浸润性快速转变材料的简单方法,在微控制和智能器件领域具有潜在应用.%With a view to costly fabrication of thermal response material,a simple economical modificate-anneal-remodificate method was developed to realize fast wet transition on phosphor-copper foil surfaces.Highly dense porous Cu2O rods were deposited on commercial phosphor-copper foil by using a distilled water immersion method.After surface modification with 1-dodecanethiol,the phosphor-copper foil exhibited excellent superhydrophobicity.Interestingly,the wettability of the asprepared surface can be adjusted from superhydrophobicity to hydrophilicity after heated at 160 ℃ for 30 min,and the resultant phosphor-copper foil can restore its superhydrophobic properties by re-modification with 1-dodecanethiol.The results indicate that numerous disulfide RS-SR bonds are generated on the surface during heating.After rinsing with ethanol,the disulfide RS-SR bonds can be easily removed from the surface,thereby leading to decrease of surface carbon content as well as change of the surface wettability.Hopefully,the present strategy could provide a facile method to fabricate thermal fast response material and have promising application in micro-control and intelligent device fields.