GO/PVA阵列结构吸收体高效光蒸汽转化  

GO/PVA Array Structure Absorber for Efficient Solar Generation of Water Vapor

作　　者：解翰林 韩威 闫鑫 高纪 杨建明 张贺新 王书唯 XIE Hanlin;HAN Wei;YAN Xin;GAO Ji;YANG Jianming;ZHANG Hexin;WANG Shuwei(School of Chemistry and Chemical Engineering,Anhui University of Technology,Maanshan 243032,China;School of Textile and Material Engineering,Dalian Polytechnic University,Dalian 116014,China)

机构地区：[1]安徽工业大学化学与化工学院,安徽马鞍山243032 [2]大连工业大学纺织与材料工程学院,辽宁大连116014

出　　处：《安徽工业大学学报（自然科学版）》2022年第1期25-30,共6页Journal of Anhui University of Technology（Natural Science）

基　　金：江苏省自然科学基金项目(BK20210894);安徽工业大学青年拔尖人才资助项目(DT19200007);企业委托项目-养老健康与环保节能材料研发(RH2000001572);辽宁省教育厅青年科技人才项目(J2019046)。

摘　　要：将氧化石墨烯(GO)均匀分散于聚乙烯醇(PVA)水溶液中,烘干制备出表面平整的GO/PVA膜。利用激光刻蚀工艺对GO/PVA膜的表面进行处理得到LT-GO/PVA膜,研究LT-GO/PVA膜的微观结构、物理性能及其作为光热转化器件的性能。结果表明:LT-GO/PVA膜表面形成了3D多孔阵列结构,可促进太阳光的吸收,减少漫反射造成的能量损耗;LT-GO/PVA膜表面开始从亲水性向疏水性转变,可促进水的快速蒸发与分离,在1 kW/m^(2)的光强度下,其光热水蒸发速率为1.827 kg/(m^(2)·h),光热转化效率为89.4%。The graphene oxide(GO)was uniformly dispersed in a polyvinyl alcohol(PVA)aqueous solution,and dried to prepare a GO/PVA film with a smooth surface.The surface of GO/PVA film was treated by laser etching process to obtain LT-GO/PVA film,and the microstructure,physical properties of LT-GO/PVA film and its perfor‐mance as a solar-thermal conversion device were investigated.The results show that the surface of LT-GO/PVA film forms a 3D porous array structure,which can promote the absorption of sunlight and reduce the energy loss caused by diffuse reflection.The surface of LT-GO/PVA film starts to change from hydrophilic to hydrophobic,which can enhance the evaporation and separation of water from LT-GO/PVA film surface.Under the light intensity of 1 kW/m^(2),the evaporation rate of water is 1.827 kg/(m^(2)·h),and the light-to-heat conversion efficiency is 89.4%.

关 键 词：激光处理 氧化石墨烯 聚乙烯醇 阵列结构 光蒸汽转化 

分 类 号：TK519[动力工程及工程热物理—热能工程]