Robust superhydrophobic candle soot and silica composite sponges for efficient oil/water separation in corrosive and hot water

被引：33

作者：

Li, Jian ^{[1
]}

Zhao, Zhihong ^{[1
]}

Kang, Ruimei ^{[1
]}

Zhang, Yan ^{[1
]}

Lv, Weizhong ^{[2
]}

Li, Mouji ^{[1
]}

Jia, Runan ^{[1
]}

Luo, Liangjie ^{[1
]}

机构：

[1] Northwest Normal Univ, Coll Chem & Chem Engn, Key Lab Gansu Polymer Mat, Key Lab Ecoenvironm Related Polymer Mat,Minist Ed, Lanzhou 730070, Peoples R China

[2] Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen 518060, Peoples R China

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2017年 / 82卷 / 03期

关键词：

Candle soot; Sol-gel method; Hydrophobic SiO2; Oil/water separation; Corrosive solution; Hot water; SPRAY-COATING PROCESS; OIL ABSORPTION; FILTER-PAPER; FABRICATION; SURFACE; RESISTANCE; SPILL; MEMBRANE; SORBENT; CLEANUP;

D O I：

10.1007/s10971-017-4350-y

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The superhydrophobic sponges were fabricated through dip-coating candle soot (i >><inverted question mark>CS) and SiO2 nanoparticles on polyurethane (Pi >><inverted question mark>U) sponges. The as-prepared sponges exhibited high absorption capacity for oils and organic solvents and the separation efficiencies of oil/water mixtures were all higher than 99.00%. In addition, the CS-SiO2-PU sponge with robust superhydrophobicity could selectively absorb oil from corrosive solutions, hot water (92 +/- 2 A degrees C), and ice/water mixtures at magnetic stirring. Furthermore, the as-prepared sponge connected with a vacuum system could remove oil from water continuously. Therefore, the CS-SiO2-PU sponge as a promising candidate can realize oil/water separation in harsh conditions. The CS-SiO2-PU sponges with robust superhydrophobicity toward harsh conditions could absorb oils from water quickly in a vacuum system.

引用

页码：817 / 826

页数：10

共 46 条

[1] Purity of the sacred lotus, or escape from contamination in biological surfaces [J].