武汉工程大学学报2025，Vol.47Issue(2)：143-150,8.DOI:10.19843/j.cnki.CN42-1779/TQ202409015
超亲水-超疏水海绵的制备及其污染物吸附与油水分离
Preparation of a superhydrophilic-superhydrophobic sponge and its application in pollutant adsorption and oil-water separation
摘要
Abstract
An environmentally friendly materials with high specific surface area and good biodegradability was synthesized to achieve efficient oil-water separation,adsorption of organic pollutants,decolorization,and treatment of heavy metal ions.Using ammonium persulfate as an initiator,acrylic acid(AA)and sodium alginate(SA)were introduced into the sponge,respectively.A uniformly dispersed superhydrophobic coating was obtained by using ethyl acetate as a solvent to disperse gas-phase SiO2 nanoparticles(NPs)and polydimethylsiloxane(PDMS),followed by ultrasonic treatment for 5 minutes.The prepared superhydrophobic coating was sprayed onto five surfaces of the sponge.After drying,the superhydrophilic-superhydrophobic SA-PAA-PVA sponge was obtained.The contact angle,morphology,and composition of the surface were characterized to prove the successful synthesis of the material.Experimental results showed that the maximum adsorption capacities of this sponge for heavy metal ions(Cu2+,Pb2+,Zn2+and Cr3+)were 102.06,97.37,108.54 and 117.76 mg/g,respectively.In addition,it exhibited excellent adsorption and decolorization effects on methylene blue solution.After methylene blue solutions with different initial mass concentrations were treated with the sponge,the mass concentrations were all less than 0.5 mg/L.The sponge can also be used for light-oil/water separation.With the simple preparation process,the sponge has great potential for industrial applications,providing a new approach to solving water pollution issues.关键词
聚乙烯醇海绵/丙烯酸/超疏水/分离/吸附Key words
polyvinyl alcohol/sponge/acrylic acid/superhydrophobic/separation/adsorption分类
化学引用本文复制引用
郑博,彭姣,王静,郭远选,金士威..超亲水-超疏水海绵的制备及其污染物吸附与油水分离[J].武汉工程大学学报,2025,47(2):143-150,8.基金项目
国家自然科学基金(52272102) （52272102）
中南民族大学中央高校基本科研业务费专项资金(CZZ23014) （CZZ23014）
