气凝胶
间苯二酚
石墨烯
炭黑
氧化物
阳光
材料科学
碳纳米管
碳纤维
悬挂(拓扑)
化学工程
基质(水族馆)
膜
铜
纳米技术
化学
复合材料
有机化学
光学
复合数
冶金
生物化学
天然橡胶
物理
工程类
数学
海洋学
同伦
地质学
纯数学
作者
Mahsa Mohsenpour,Siamak Motahari,Fariba Tajabadi,Mostafa Najafi
出处
期刊:RSC Advances
[The Royal Society of Chemistry]
日期:2020-01-01
卷期号:10 (68): 41780-41790
被引量:13
摘要
In this study, sunlight absorbing membranes consisting of ultra-black resorcinol-formaldehyde (RF)-based carbon aerogel (CA) and hydrophilic graphene oxide (GO) suspension were fabricated. To investigate the effect of substrate structure, CA/GO ink was cast onto two different layers including 3D modified copper foam (MCF) and 2D paper sheet. The copper foam (CF) was treated with a new and simple modification method to enhance the hydrophilicity. Finally, the solar steam generation performances of the prepared membranes were evaluated. The optical analyses indicated that 2D and 3D samples respectively reflected ∼4.5% and ∼10%, and transmitted ∼0% of the incident light. The water contact angle measurements revealed a significant change in the wettability of the CF layer representing a contact angle of 139.41° before the modification. Based on the water evaporation rates, the efficiencies of 81.1% and 91.4% (at 1 kW m-2) were achieved for 2D and 3D absorbents, respectively. In addition to eliminating the geometrical restrictions of the monolithic absorbents, the results verified that CA/GO ink-based absorbents were promising materials for solar steam generation systems (SSG) due to the high light absorption, superhydrophilicity and porous structure.
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