Electrically Conductive Carbon Aerogels with High Salt-Resistance for Efficient Solar-Driven Interfacial Evaporation

doi:10.1021/acsami.0c06836

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	Electrically Conductive Carbon Aerogels with High Salt-Resistance for Efficient Solar-Driven Interfacial Evaporation
	Li, Lingxiao 2; Hu, Tao 2; Li, An 1; Zhang, Junping 2
刊名	ACS Applied Materials and Interfaces
	2020-07-15
卷号	12 期号:28 页码:32143-32153
关键词	Carbon Carbonization Evaporation Heavy metals Insulator contamination Iron oxides Magnetite Metal ions Seawater effects Sodium chloride Superhydrophilicity Superhydrophobicity Thermal conductivity Water supply Antifouling performance Complex wastewater Electrically conductive High evaporation rate Long term performance Low thermal conductivity Simulated seawaters Thermal insulators
ISSN号	19448244
DOI	10.1021/acsami.0c06836
英文摘要	Solar-driven interfacial evaporation (SIE) is a promising approach for obtaining clean water but suffers from serious salt-fouling and poor long-term performance in seawater. Here, we report a high-performance salt-resistant SIE system from the perspective of nature sustainability. An electrically conductive and magnetic carbon aerogel is prepared by carbonization of Fe3O4-modified cellulose that originated from waste paper, and then its external surface is activated using O2-plasma, forming the Janus superhydrophilic/superhydrophobic structure. The superhydrophilic external surface of the aerogel with macroporous skeleton assures ultrafast and adequate water supply and salt diffusion, while the superhydrophobic interior is the thermal insulator hindering water/salt infiltration. Benefiting from high solar absorption (∼97%), low thermal conductivity, unique Janus structure, and photothermal/electrothermal effects, the aerogel shows high evaporation rate (2.1 kg m-2 h-1, 1 sun) for simulated seawater. The aerogel features the following remarkable long-term salt-antifouling performance: (i) >20 d continuous evaporation in simulated seawater without degradation, even in 10 wt % NaCl solution, and (ii) >50 h continuous evaporation without seawater replenishment. Moreover, heavy metal ions, soluble organics, and oil can be completely removed from complex wastewater by the aerogel. This study offers an alternative approach in achieving clean water via SIE of seawater and complex wastewater. © 2020 American Chemical Society.
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	American Chemical Society
WOS记录号	WOS:000551488400110
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115348]
专题	石油化工学院
作者单位	1.Department of Chemical Engineering, College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China 2.Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou; 730000, China;
推荐引用方式 GB/T 7714	Li, Lingxiao,Hu, Tao,Li, An,et al. Electrically Conductive Carbon Aerogels with High Salt-Resistance for Efficient Solar-Driven Interfacial Evaporation[J]. ACS Applied Materials and Interfaces,2020,12(28):32143-32153.
APA	Li, Lingxiao,Hu, Tao,Li, An,&Zhang, Junping.(2020).Electrically Conductive Carbon Aerogels with High Salt-Resistance for Efficient Solar-Driven Interfacial Evaporation.ACS Applied Materials and Interfaces,12(28),32143-32153.
MLA	Li, Lingxiao,et al."Electrically Conductive Carbon Aerogels with High Salt-Resistance for Efficient Solar-Driven Interfacial Evaporation".ACS Applied Materials and Interfaces 12.28(2020):32143-32153.