Self-assembled core-shell polydopamine@MXene with synergistic solar absorption capability for highly efficient solar-to-vapor generation
有 synergistic 的自我装配的核心壳 polydopamine@MXene 为高度有效的 solar-to-vapor 产生的太阳的吸收能力作者机构：College of Polymer Science and EngineeringSichuan UniversityState Key Laboratory of Polymer Materials EngineeringChengdu610065China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2020年第13卷第1期
页 面：255-264页
核心收录：
学科分类：08[工学] 0807[工学-动力工程及工程热物理]
基 金：supported by the National Natural Science Foundation of China(Nos.51873126 51422305 and 51721091)
主 题：self-assembly polydopamine(PDA)@MXene microsphere synergistic light absorption solar-to-vapor generation light absorption stability
摘 要：As a renewable and environment-friendly technology for seawater desalination and wastewater purification,solar energy triggered steam generation is attractive to address the long-standing global water scarcity ***,practical utilization of solar energy for steam generation is severely restricted by the complex synthesis,low energy conversion efficiency,insufficient solar spectrum absorption and water extraction capability of state-of-the-art ***,for the first time,we report a facile strategy to realize hydrogen bond induced self-assembly of a polydopamine(PDA)@MXene microsphere photothermal layer for synergistically achieving wide-spectrum and highly efficient solar absorption capability(≈96%in a wide solar spectrum range of 250–1,500 nm wavelength).Moreover,such a system renders fast water transport and vapor escaping due to the intrinsically hydrophilic nature of both MXene and PDA,as well as the interspacing between core-shell *** solar-to-vapor conversion efficiencies under the solar illumination of 1 sun and 4 sun are as high as 85.2%and 93.6%,***,the PDA@MXene photothermal layer renders the system durable mechanical properties,allowing producing clean water from seawater with the salt rejection rate beyond 99%.Furthermore,stable light absorption performance can be achieved and well maintained due to the formation of ternary TiO2/C/MXene complex caused by oxidative degradation of ***,this work proposes an attractive MXene-assisted strategy for fabricating high performance photothermal composites for advanced solar-driven seawater desalination applications.
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