期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 45, 页码 50397-50405出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c13845
关键词
corncob; carbonized; heat localization; photothermal; solar steam generation
资金
- Scientific Research Foundation of the Fujian University of Technology [E0600366]
- China Postdoctoral Science Foundation [2017M622078]
Solar steam generation is receiving considerable interest because of its potential application in wastewater treatment and desalination. Many devices with various photothermal materials and structures have been demonstrated to be solar steam evaporators by improving their light absorption, heat loss, water transportation, and vapor escape. However, developing a biomass-based evaporator with heat localization and rapid water transportation is highly desired yet still challenging. Here, corncobs, a kind of agricultural waste with vascular bundle and vesiculose structures, are used to fabricate solar steam-generation devices. After high-temperature treatment, the carbonized corncobs maintain the highly anisotropic porous framework and favorable hydrophilicity and thereby have excellent thermal management and water transportation. With efficient solar absorption, heat localization, and rapid water transportation, the lightweight carbonized corncobs can float on water and generate water vapor with a high steam generation efficiency of 86.7% under 1 sun.
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