PVDF-CNT自漂浮多孔微珠的制备及在高效太阳能驱动界面水蒸发中的应用  

Self-floating Porous PVDF-CNT Microbeads for Highly Efficient Solar-driven Interfacial Water Evaporation

作　　者：梁平平[1,2] 刘帅 李红艺[1] 丁亚丹 温晓琨[1] 刘俊平 洪霞[1] LIANG Pingping;LIU Shuai;LI Hongyi;DING Yadan;WEN Xiaokun;LIU Junping;HONG Xia(Key Laboratory of UV-Emitting Materials and Technology,the Ministry of Education,Northeast Normal University,Changchun 130024,China;School of Mechanical and Civil Engineering,Jilin Agricultural Science and Technology University,Jilin 132101,China)

机构地区：[1]东北师范大学紫外光发射材料与技术教育部重点实验室,长春130024 [2]吉林农业科技学院机械与土木工程学院,吉林132101

出　　处：《高等学校化学学报》2021年第8期2689-2693,共5页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:51972052);吉林省科技发展计划项目(批准号:20190201243JC);中央高校基本科研业务费(批准号:2412019FZ033)资助。

摘　　要：采用操作便捷的相转化法制备了可用于太阳能驱动界面水蒸发的聚偏氟乙烯-碳纳米管(PVDF-CNT)自漂浮多孔微珠.PVDF-CNT微珠独特的组成和多孔微球结构有助于实现太阳光的高效捕获、充分的水运输和快速的蒸汽逸出,且CNTs含量越高,PVDF-CNT微珠性能越佳.PVDF-CNT微珠最多可吸收约94.5%的太阳光,2 min内使水面温度从20.8℃升高至43.1℃.在1 kW/m^(2)的太阳光模拟器照射下,水蒸发速率高达1.501kg/(m^(2)·h),太阳能转换效率高达94.2%.Self-floating porous polyvinylidene fluoride-carbon nanotube(PVDF-CNT)microbeads were prepared by a convenient phase inversion method for solar-driven interfacial water evaporation.The unique composition and porous microsphere structure synergistically contribute to efficient sunlight capture,adequate water transport and rapid vapor escape.The higher the content of CNTs is,the better performance the PVDF-CNT microbeads show.The highest light absorption of PVDF-CNT microbeads can reach up to about 94.5%and the water surface temperature quickly rises from 20.8℃to 43.1℃within 2 min illumination.Under the simulated solor irradiation of 1 kW/m^(2),the PVDF-CNT microbeads exhibit a water evaporation rate of 1.501 kg/(m^(2)·h)and a solar energy conversion efficiency of 94.2%.

关 键 词：碳纳米管 聚合物 相转化法 光热性质 水蒸发 

分 类 号：O631[理学—高分子化学]