超疏水玉米秸秆粉末的制备及其油水分离性能  

Preparation of Superhydrophobic Corn Stover Powder and Its Oil-Water Separation Properties

作　　者：李鑫林 任永忠[1] 田佳苑 许雲榛 曹士权 LI Xinlin;REN Yongzhong;TIAN Jiayuan;XU Yunzhen;CAO Shiquan(Lanzhou Institute of Technology,Lanzhou Gansu 730050,China)

机构地区：[1]兰州工业学院,甘肃兰州730050

出　　处：《辽宁化工》2024年第10期1524-1527,共4页Liaoning Chemical Industry

基　　金：省级大学生创新创业训练计划项目(项目编号:S202211807024)。

摘　　要：利用溶胶-凝胶法制得Fe_(3)O_(4)溶胶,以粉碎的玉米秸秆为基底,在其表面涂抹Fe_(3)O_(4)溶胶并经低表面能的物质十八烷基三甲氧基硅烷修饰后呈现超疏水性和超亲油性,水的接触角为155°,而油的接触角为0°。利用玉米秸秆粉对油和水相反的润湿性可以用于水面上轻油的吸附及水面下重油的过滤。对各种类型的油品的分离效率均在94%以上。Fe_(3)O_(4) sol was produced using the sol-gel method,the surface of crushed maize straw as a substrate was coated by Fe_(3)O_(4) sol and modified by octadecyltrimethoxysilane as low surface energy substance,showing superhydrophobicity and superoleophilicity with contact angle of 155°for water and 0°for oil.The opposite wetting properties of corn straw flour for oil and water can be used for the adsorption of light oils on the surface of water and the filtration of heavy oils below the surface of water.The separation efficiency for all types of oil is over 94%.

关 键 词：Fe_(3)O_(4)溶胶 超疏水 玉米秸秆粉末 超亲油 

分 类 号：TB34[一般工业技术—材料科学与工程]