A waste biomass-derived photothermic material with high salt-resistance for efficient solar evaporation

被引:71
|
作者
Guan, Heng-Shu [1 ]
Fan, Ting-Ting [1 ,2 ]
Bai, Hao-Yan [1 ]
Su, Ying [1 ]
Liu, Zhong [1 ]
Ning, Xin [2 ]
Yu, Miao [1 ]
Ramakrishna, Seeram [3 ]
Long, Yun-Ze [1 ,4 ]
机构
[1] Qingdao Univ, Coll Phys, Collaborat Innovat Ctr Nanomat & Devices, Qingdao 266071, Peoples R China
[2] Qingdao Univ, Coll Text & Clothing, Shandong Ctr Engn Nonwovens, Ind Res Inst Nonwovens & Tech Text, Qingdao 266071, Peoples R China
[3] Natl Univ Singapore, Ctr Nanofibers & Nanotechnol, Dept Mech Engn, Singapore 117574, Singapore
[4] Qingdao Univ, Collaborat Innovat Ctr Ecotext Shandong Prov, Qingdao 266071, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
MXene; Natural materials; Salt resistance; High-efficiency; Solar desalination; WATER-PURIFICATION; STEAM-GENERATION; DESALINATION; TECHNOLOGY; ENERGY; PRESSURE; MXENE;
D O I
10.1016/j.carbon.2021.12.029
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Effective use of solar energy to produce steam for solving the problem of global shortage of fresh water is considered to be a promising technology. In this work, we reported a low-cost, high-efficient, waste biomass-derived solar evaporator with Janus structure was readily constructed from porous pomelo peel (PP). This multifunctional photothermal sponge has a hydrophobic top layer and a hydrophilic bottom layer to prevent the accumulation of salt on the surface of the evaporator, ensuring high efficiency and stable water vapor output. After hydrophobic modification of one side of freeze-dried PP, MXene was sprayed on the Janus PP (JPP), the interfacial solar energy driven water evaporation can be effectively realized for seawater desalination. The evaporation rate and solar thermal conversion efficiency of JPP@MXene (JPP@M) under simulated sunlight irradiation with one sun (1 kW m(-2)) were 1.48 kg m(-2).h(-1) and 92.3% respectively. Under simulated sunlight irradiation of 1 sun, a high efficiency evaporation performance could be maintained after 50 cycles. In addition, JPP@M could be used to effectively reduce the viscosity of heavy crude oil through solar-assisted heating, resulting in effective purification. Moreover, JPP@M exhibited excellent antibacterial property, which is more important for biomass samples. This cost-efficient, sustainable and eco-friendly photothermic sponge is expected to be used for large-scale wastewater treatment and clean water generation. (C) 2021 Published by Elsevier Ltd.
引用
收藏
页码:265 / 275
页数:11
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