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A facile nanocomposite strategy to fabricate a rGO–MWCNT photothermal layer for efficient water evaporation
Wang, Yuchao; Wang, Canzhu; Song Xiangju; Megarajana, Suresh Kumar; Jiang Heqing
2017-11-30
发表期刊Journal of Materials Chemistry A
卷号74期号:8页码:972-978
其他摘要Solar-driven water evaporation assisted by photothermal membranes is considered as one of the sustainable and cost-effective strategies for pure water generation and wastewater treatment. Herein, we report a facile but effective approach to improve the photothermal performance by combining 2D reduced graphene oxide (rGO) and 1D multi-walled carbon nanotubes (MWCNTs), which have different nanomorphologies. The photothermal layer can be easily deposited on different substrate materials via simple vacuum assistance. Such a composite photothermal layer shows a rough surface with a controllable nano-structure, which can thus optimize solar light harvesting. On the other hand, the formation of a loose internal porous structure and suitable wettability ensure water transport inside the photothermal layer during evaporation. The surface temperature reaches as high as 78 C even under one sun irradiation (1 kW m 2), which is 10 C higher than the result of pure rGO membranes. When loaded on a PVDF substrate, the rGO–MWCNT based membrane is flexible and shows an obvious improvement in the evaporation rate, about 79.0% and 8.9% higher than those of pure rGO and MWCNT membranes, respectively. The solar thermal conversion efficiency can reach up to 80.4% without any extra accessory for thermal management. Based on our results, the nanocomposite strategy is facile and effective for the development of novel photothermal membranes for high-efficiency evaporation, and contributes to the widespread application in the fields of desalination and wastewater treatment.
文章类型Article
DOI10.1007/s00284-017-1275-1
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.qibebt.ac.cn/handle/337004/9947
专题膜分离与催化团队
作者单位1.中国科学院青岛生物能源与过程研究所
2.中国海洋大学
3.中国科学院大学
推荐引用方式
GB/T 7714
Wang, Yuchao,Wang, Canzhu,Song Xiangju,等. A facile nanocomposite strategy to fabricate a rGO–MWCNT photothermal layer for efficient water evaporation[J]. Journal of Materials Chemistry A,2017,74(8):972-978.
APA Wang, Yuchao,Wang, Canzhu,Song Xiangju,Megarajana, Suresh Kumar,&Jiang Heqing.(2017).A facile nanocomposite strategy to fabricate a rGO–MWCNT photothermal layer for efficient water evaporation.Journal of Materials Chemistry A,74(8),972-978.
MLA Wang, Yuchao,et al."A facile nanocomposite strategy to fabricate a rGO–MWCNT photothermal layer for efficient water evaporation".Journal of Materials Chemistry A 74.8(2017):972-978.
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