壳聚糖-醋酸纤维素-TiO 基膜对油水乳液的分离及对 Cu(II)的吸附
Separation of oil-water emulsion and adsorption of Cu(II) on a chitosan-cellulose acetate-TiO based membrane.
机构信息
Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China.
Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China.
出版信息
Chemosphere. 2019 Nov;235:239-247. doi: 10.1016/j.chemosphere.2019.06.060. Epub 2019 Jun 10.
A modified cellulose acetate, modified chitosan, titanium dioxide membrane (MCA-MCS-TiO) was prepared for oil-water emulsion separation and Cu(II) adsorption. This membrane shows excellent hydrophilicity and underwater oleophobicity. After being modified, the water contact angles of the membranes attain 13.7°, and the underwater oil contact angles reach 157.24°. The membrane exhibits high oil-water separation efficiency (99.4%) for cyclohexane, at the same time, the adsorption amount of Cu(II) on the membrane was measured. The variables include the ratio of modified cellulose to modified chitosan, the initial concentration of Cu(II), and the pH of Cu(II) solution. When pH = 7, the adsorption capacity of the membrane to Cu(II) reaches 220.67 mg g. When the concentration of Cu(II) solution is 1000 mg L, the adsorption efficiency is as high as 97.0%.
一种改性醋酸纤维素-改性壳聚糖-二氧化钛膜（MCA-MCS-TiO）被制备用于油水乳液分离和 Cu(II)吸附。该膜具有优异的亲水性和水下疏油性。改性后，膜的水接触角达到 13.7°，水下油接触角达到 157.24°。该膜对环己烷的油水分离效率高达 99.4%，同时测量了膜对 Cu(II)的吸附量。变量包括改性纤维素与改性壳聚糖的比例、Cu(II)的初始浓度和 Cu(II)溶液的 pH 值。当 pH=7 时，膜对 Cu(II)的吸附容量达到 220.67mg/g。当 Cu(II)溶液浓度为 1000mg/L 时，吸附效率高达 97.0%。
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