田 杰1，2，孙岳玲2，毋 伟3
(1.扬州大学 化学化工学院，江苏 扬州 225009；2.扬州工业职业技术学院 化学工程学院，江苏 扬州 225000；3.北京化工大学 化学工程学院，北京 100029)
DOI:10.13732/j.issn.1008-5548.2022.03.014
收稿日期： 2021-11-23， 修回日期：2022-03-27，在线出版时间：2022-04-21。
基金项目：国家自然科学基金项目，编号B061203。
第一作者简介：田杰(1992—), 女, 讲师, 博士, 研究方向为功能性纳米材料。E-mail: 646300529@qq.com。
通信作者简介：毋伟(1966—), 男, 教授, 博士, 研究方向为功能性纳米材料的制备与应用研究。E-mail: wuwei@mail.buct.edu.cn。
摘要：以三聚氰胺泡沫(MF)为3D载体，石墨烯-氧化石墨烯(G-GO)复合纳米片为前驱体，采用浸渍法和热退火法制备3D石墨烯-还原氧化石墨烯-碳泡沫(G-RGO@CF)。采用扫面电子显微镜、紫外-可见-近红外光谱仪等对G-RGO@CF进行形貌、结构进行表征。结果表明：G-RGO@CF展现出丰富的孔结构(孔隙率高达96.1%),高且宽的吸收率(96.6%,其波长为250～2 500 nm)和亲水性；在1 kW/m2太阳光强照射下，G-RGO@CF的蒸发速率和能量转换效率分别为1.54 kg/(m2·h)和96.4%;在经历10次循环后，仍保持较高的蒸发速率和能量转换效率。
关键词：石墨烯-氧化石墨烯复合纳米片；太阳能水蒸发；界面蒸发
Abstract：3 D graphene-reduced graphene oxide-carbon foam(G-RGO@CF) was prepared by impregnation and thermal annealing using melamine foam(MF) as 3 D carrier and graphene-graphene oxide(G-GO) composite nanosheets as precursors. The morphology and structure of the materials were characterized by scanning electron microscope(SEM) and UV-vis-NIR spectrometer. The results show that G-RGO@CF showes rich pore structure(porosity 96.1%), high and broadband light absorption(96.6%, wavelength 250～2 500 nm), and good hydrophilicity. The evaporation rate and energy conversion efficiency of G-RGO@CF under 1 kW/m2 are 1.54 kg/(m2·h) and 96.4%, respectively. The water evaporation system retaines high evaporation rate and energy conversion efficiency after 10 cycles.
Keywords：graphene-graphene oxide composite nanosheets; solar steam generation; interfacial evaporation
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