太阳能
蒸馏
膜蒸馏
光热治疗
催化作用
化学
化学工程
环境科学
光催化
膜
饮用水净化
化学能
热能
工艺工程
废物管理
环境工程
材料科学
纳米技术
海水淡化
有机化学
生态学
工程类
物理
生物
量子力学
生物化学
作者
Liang Han,Jian Mao,An‐Quan Xie,Yunzheng Liang,Liangliang Zhu,Su Chen
标识
DOI:10.1016/j.seppur.2022.123003
摘要
Energy and freshwater, as natural and important strategic resources, are the lifeblood and basic security of economic and social development. Freshwater production consumes vast energy, and vice versa. It is rare and still a significant challenge in the rational design of implementation for efficient clean water and chemical fuel production via solar-thermal technology, reconciling the water-energy contradiction. Herein, we demonstrated a new double-stage solar catalytic membrane distillation (DSCMD) system, integrating photocatalyst into the photothermic electrospun film that is imparted with the water feeding, photothermic conversion and photocatalysis functions, which simultaneously realized the stable freshwater and enhanced clean fuels production. The photothermal/catalytic materials synergistically harvest photons for localized heat generation, which also acts on catalytically active sites to enhance the yield of vapor and CO, so as to maximize the utilization of solar energy. As a result, the overall freshwater collection rate of 1.45 kg m-2h−1 with the solar-to-water efficiency of up to 90.6 % and enhanced CO evolution rate of 21.29 μmol gcat−1 h−1 from CO2 photoreduction are achieved by more effective vapor transportation and latent heat recovery, superior to the traditional photothermal membrane distillation systems, providing an alternative opportunity for sustainably alleviating the freshwater and energy shortage.
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