三聚氰胺
接触角
润湿
海绵
材料科学
化学工程
吸附
吸附
吸附剂
石墨烯
复合材料
有机化学
纳米技术
化学
植物
工程类
生物
作者
Xinyu Qi,Zhuwei Gao,Chang-Jiu Li,Shihao Wang,Xin Zou,Lan He,Hao Chen,Zhongxin Liu
标识
DOI:10.1016/j.jclepro.2023.136963
摘要
Sponges have been widely studied as common adsorbent materials. There is little research on sponges that can be used for comprehensive treatment of oil-water mixtures, emulsions and high viscosity oils. We prepared a graphene melamine sponge (rGOMS) adsorbent material with special wettability for oil water separation by loading rGO on melamine sponge. The results showed that the water contact angle of the rGOMS prepared with GO concentration of 4.5 mol/mL (4.5-rGOMS) was 153.3° and the oil contact angle in air was 0°, indicating that 4.5-rGOMS has superhydrophobicity and superlipophilicity. The 4.5-rGOMS possessed a high saturation sorption capacity, which had values between 54.6 g/g and 132.9 g/g, and did not decrease significantly after several cycles. 4.5-rGOMS had a fast separation capacity for carbon tetrachloride/water mixtures and water-in-oil emulsions, and could achieve efficient continuous separation of n-hexane-water mixtures by connecting a peristaltic pump.
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