摘要
吸附式空气取水技术可在全球范围内为人们提供清洁的饮用水.本研究采用水热法制备MOF-303(Al)材料,考察水溶剂、金属铝源、反应温度和分散剂等条件对其水吸附性能和结构形貌的影响,并探究水热过程直接实现MOF-303(Al)与无机盐复合的可能性.结果表明,水溶剂和分散剂对MOF-303(Al)的水吸附性能影响较小,其水吸附容量均为0.4 g·g^(-1),且能在0.5 h内达到饱和吸附;温度和铝源显著影响材料的水吸附性能,水吸附容量变化幅度为0.3 g·g^(-1);减少水热过程的洗涤步骤能直接完成无机盐与MOF-303(Al)的复合,且材料在95%RH时的吸附容量达2.055 g·g^(-1).
The adsorption water harvesting technology can provide clean drinking water to people worldwide.This paper prepares the MOF-303(Al)by hydrothermal,investigates the effects of preparation conditions such as aqueous solvent,metal-aluminum source,reaction temperature,and dispersant type on water adsorption performance and structure topography,and the possibility of directly achieving the composite of MOF-303(Al)with inorganic salts based on hydrothermal process was explored.The results show that the aqueous solvent and dispersant have little effect on the water adsorption performance;both can achieve a water adsorption capacity of 0.4 g·g^(-1) and the fast adsorption kinetics of saturation adsorption can be achieved in half hour.Temperature and aluminum source will significantly affect the water adsorption performance,with a floating change of 0.3 g·g^(-1).Reducing the washing step of hydrothermal process can directly realize the recombination of inorganic salt and MOF-303(Al),and achieve a high adsorption capacity of 2.055 g·g^(-1) at 95%RH.
作者
吴其洋
魏源送
郑利兵
WU Qiyang;WEI Yuansong;ZHENG Libing(State Key Joint Laboratory of Environmental Simulation and Pollution Control,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing,100085,China;Laboratory of Water Pollution Control Technology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing,100085,China;College of Resources and Environment,University of Chinese Academy of Sciences,Beijing,100049,China)
出处
《环境化学》
CAS
CSCD
北大核心
2023年第11期3706-3715,共10页
Environmental Chemistry
基金
国家自然科学基金(52270081)
中国科学院生态环境研究中心实验室发展基金(RCEES-LDF-2019-01)资助.
