Three-dimensional adsorbent with pH induced superhydrophobic and superhydrophilic transformation for oil recycle and adsorbent regeneration

doi:10.1016/j.jcis.2020.04.106

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Three-dimensional adsorbent with pH induced superhydrophobic and superhydrophilic transformation for oil recycle and adsorbent regeneration
	Tang, Lei ; Wang, Gang ; Zeng, Zhixiang ; Shen, Luli ; Zhu, Lijing ; Zhang, Yingxin ; Xue, Qunji
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2020
卷号	575 页码:231-244
关键词	CARBON-FIBER AEROGEL HIGHLY EFFICIENT POLYURETHANE SPONGE FIRE-RESISTANT WRAPPED SPONGE DRUG-DELIVERY WATER REMOVAL SURFACE WETTABILITY
DOI	10.1016/j.jcis.2020.04.106
英文摘要	With the development of research on superwettability materials, superhydrophobic and superoleophilic materials show superior separation ability in oil-water separation due to their excellent oil-water selectivity. However, due to the super wetting ability of the oil to the material, it is difficult to clean and reuse after adsorbing the oil spill. Therefore, how to realize the complete regeneration of superhydrophobic and superoleophilic materials is still a worldwide problem. In this paper, the controlled adsorption-desorption process of oil and the complete regeneration of materials are realized by pH induced super-wettability transformation. We fabricate a pH-responsive oil-water separation sponge by a method of simply impregnating the carboxyl and alkyl group modified SiO2 nanoparticles on the surface of melamine sponge (MS) skeleton, which can change the wettability from superhydrophobicity and superhydrophilicity through protonation and deprotonation in different pH solutions. The experiment results indicate that the sponge is superhydrophobic and superoleophilic in acid and neutral solution, and can adsorb oil in water. While in basic solution, it becomes superhydrophilic and underwater superoleophobic, which can release the adsorbed oil. With the help of a vacuum pump, we can use this wettability transition to achieve a continuous oil adsorption and desorption process. These findings offer a new preparation method of regenerative 3D adsorption materials like MS in oil-water separation. (C) 2020 Elsevier Inc. All rights reserved.
学科主题	Chemistry
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20553]
专题	2020专题
作者单位	1.Zeng, ZX (corresponding author), Ningbo Inst Mat Technol & Engn, Ningbo, Peoples R China. 2.Wang, G
推荐引用方式 GB/T 7714	Tang, Lei,Wang, Gang,Zeng, Zhixiang,et al. Three-dimensional adsorbent with pH induced superhydrophobic and superhydrophilic transformation for oil recycle and adsorbent regeneration[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2020,575:231-244.
APA	Tang, Lei.,Wang, Gang.,Zeng, Zhixiang.,Shen, Luli.,Zhu, Lijing.,...&Xue, Qunji.(2020).Three-dimensional adsorbent with pH induced superhydrophobic and superhydrophilic transformation for oil recycle and adsorbent regeneration.JOURNAL OF COLLOID AND INTERFACE SCIENCE,575,231-244.
MLA	Tang, Lei,et al."Three-dimensional adsorbent with pH induced superhydrophobic and superhydrophilic transformation for oil recycle and adsorbent regeneration".JOURNAL OF COLLOID AND INTERFACE SCIENCE 575(2020):231-244.