论文类型：期刊论文
第一作者：Panpan He
通讯作者：Ran Niu,Jiang Gong
合写作者：Liang Hao,Ning Liu,Huiying Bai
发表刊物：Chemical Engineering Journal
收录刊物：SCI
学科门类：工学
一级学科：材料科学与工程
文献类型：J
卷号：423
页面范围：130268
关键字：Metal–organic frameworks; Solar vapor generation; Bamboo-like carbon nanotube; Sea urchin-like structure; Wood
发表时间：2021-05-03
影响因子：13.273
摘要：Solar evaporation is considered as a hopeful technology for producing freshwater from non-potable water using inexhaustible solar energy. However, solar evaporators with high performance and good scalability are still urgently needed. Herein, a bilayer solar evaporator is prepared by facilely coating natural wood with carbon materials pyrolyzed from sea urchin-like metal–organic frameworks (MOFs). The carbon materials inherit the sea urchin-like morphology and grow bamboo-like carbon nanotubes wrapping Ni nanoparticles, which synergistically contribute to the efficient light trapping and thermal harvesting. Meanwhile, the doped nitrogen and oxygen enhance the hydrophilicity of carbon materials. In another aspect, wood not only provides abundant hydrophilic channels for sufficient water supply, but also reduces the water evaporation enthalpy by 26% through the hydrogen bonds between water and hydrophilic groups of wood. With the combined merits above, the bilayer solar evaporator achieves high sunlight absorption (98%), low thermal conductivity (0.17 W m−1 K−1), rapid water transport, and low vaporization enthalpy. Consequently, the solar evaporator exhibits a notable water evaporation rate of 2.07 kg m-2 h−1 under 1 Sun irradiation, surpassing that of reported MOFs or wood-based evaporators. Importantly, a large-scale solar desalination device is developed for outdoor experiments to obtain freshwater from seawater. The daily freshwater production amount per unit area (2.74 kg) meets the daily water consumption requirement of one adult. This work states the great potential of MOFs-derived carbons for efficient solar vapor generation and opens an avenue for application in energy storage and conversion.
发布期刊链接：https://www.sciencedirect.com/science/article/pii/S1385894721018556?via%3Dihub