利用激光诱导石墨烯实现高效太阳能界面蒸发

Efficient solar interfacial evaporation using laser-induced graphene

传统的石墨烯制备方法过程复杂且环境严苛,本文使用激光诱导法制备石墨烯,并探索其在太阳能界面蒸发领域的应用。以商业隔热软木板(ICB板)为基底,在其表面通过激光刻蚀诱导生成石墨烯(laser-induced graphene,LIG)作为光热膜(ICB-LIG膜),辅以隔热装置和水输送通道,构建了一个新型的太阳能蒸发器。蒸发性能测试结果表明,该太阳能蒸发器能够在1个标准太阳光照射下实现高达1.33 kg·m-2·h-1的蒸发速率,相应的光热转化效率为86.0%。此外,该太阳能蒸发器还具有良好的耐久性,在7次循环实验中蒸发速率仅下降3.0%。

The traditional graphene preparation process is complicated and the environment is harsh.In this paper,laser induced method is used to prepare graphene,and its application in the field of solar-driven interfacial evaporation is explored.The commercial thermal insulation cork board(ICB board)is utilized as the substrate,and laser-induced graphene(LIG)is generated on its surface as a photothermal membrane(ICB-LIG membrane).With the aid of thermal insulation devices and water transportation channels,a new solar evaporator is constructed.The evaporation performance test results show that the solar evaporator can achieve an evaporation rate of up to 1.33 kg·m-2·h-1 under 1 sunlight irradiation,and the corresponding photothermal conversion efficiency is 86.0%.In addition,the solar evaporator has good durability,and the evaporation rate drops only 3.0%in 7 cyclic experiments.