Vertically aligned reduced graphene oxide/Ti_(3)C_(2)T_(x)MXene hybrid hydrogel for highly efficient solar steam generation

查看全文 作　　者：Wei [1]Li;Xiaofeng [1]Li;Wei [1]Chang;Jing [1]Wu;Pengfei [1]Liu;Jianjun [2]Wang;Xi [3]Yao;Zhong-Zhen [1,4]Yu

机构地区：[1]State Key Laboratory of Organic-Inorganic Composites,College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing,100029,China;[2]Institute of Chemistry,Chinese Academy of Sciences,Beijing,100190,China;[3]Department of Biomedical Sciences,City University of Hong Kong,Hong Kong,999077,China;[4]Beijing Key Laboratory of Advanced Functional Polymer Composites,Beijing University of Chemical Technology,Beijing,100029,China

出　　处：《Nano Research》索引2020年第13卷第11期,共9页

基　　金：support from the National Natural Science Foundation of China(Nos.51773008,51533001,and U1905217);the Fundamental Research Funds for the Central Universities(No.XK1802). 摘　　要：Effective utilization of abundant solar energy for desalination of seawater and purification of wastewater is one of sustainable techniques for production of clean water,helping relieve global water resource shortage.Herein,we fabricate a vertically aligned reduced graphene oxide/Ti_(3)C_(2)T_(x)MXene(A-RGO/MX)hybrid hydrogel with aligned channels as an independent solar steam generation device for highly efficient solar steam generation.The vertically aligned channels,generated by a liquid nitrogen-assisted directional-freezing process,not only rapidly transport water upward to the evaporation surface for efficient solar steam generation,but also facilitate multiple reflections of solar light inside the channels for efficient solar light absorption.The deliberate slight reduction endows the RGO with plenty of polar groups,decreasing the water vaporization enthalpy effectively and hence accelerating water evaporation efficiently.The MXene sheets,infiltrated inside the A-RGO hydrogel on the basis of Marangoni effect,enhance light absorption capacity and photothermal conversion performance.As a result,the A-RGO/MX hybrid hydrogel achieves a water evaporation rate of 2.09 kg·m^(−2)·h^(−1)with a high conversion efficiency of 93.5%under 1-sun irradiation.Additionally,this photothermal conversion hydrogel rapidly desalinates seawater and purifies wastewater to generate clean water with outstanding ion rejection rates of above 99%for most ions. 关键词：anisotropic hydrogel MXene reduced graphene oxide solar steam generation aligned channels

相关文献

参考文献（69）
引证文献（23）
耦合文献（15）

参考文献(69)

引证文献(23)

耦合文献(15)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Vertically aligned reduced graphene oxide/Ti_(3)C_(2)T_(x)MXene hybrid hydrogel for highly efficient solar steam generation

参考文献(69)

引证文献(23)

耦合文献(15)

用户提示