新型壳聚糖/二氧化硅/氧化锌纳米复合材料作为染料去除的吸附剂。

New chitosan/silica/zinc oxide nanocomposite as adsorbent for dye removal.

机构信息

Chemistry Department, Faculty of Science, Ain Shams University Abbassia, Cairo, Egypt.

Cellulose and Paper Department, National Research Centre, 33 El-Bohouth st., Dokki, P.O. 12622 Giza, Egypt.

出版信息

Int J Biol Macromol. 2019 Jun 15;131:520-526. doi: 10.1016/j.ijbiomac.2019.03.087. Epub 2019 Mar 14.

DOI:10.1016/j.ijbiomac.2019.03.087

PMID:30880055

Abstract

Chitosan/silica hybrid was used for zinc oxide (ZnO) nanoparticles immobilization to form chitosan/silica/ZnO nanocomposite. This nanocomposite was utilized to eliminate methylene blue (MB) from wastewater. The effect of ZnO immobilization on the adsorption properties of the nanocomposite was studied in details. The best interpretation for the equilibrium data was given by Langmuir isotherm, and the highest adsorption capacity of MB reached to 293.3 mg/g in slight basic medium. As an effective and low-cost adsorbent, chitosan/silica/ZnO nanocomposite is expected to have a promising future for adsorption of organic dyes from their aqueous solutions.

摘要

壳聚糖/二氧化硅杂化材料被用于固定氧化锌（ZnO）纳米颗粒，形成壳聚糖/二氧化硅/氧化锌纳米复合材料。该纳米复合材料用于从废水中去除亚甲基蓝（MB）。详细研究了 ZnO 固定化对纳米复合材料吸附性能的影响。平衡数据的最佳解释由朗缪尔等温线给出，在弱碱性介质中，MB 的最大吸附容量达到 293.3 mg/g。作为一种有效且低成本的吸附剂，壳聚糖/二氧化硅/氧化锌纳米复合材料有望在吸附水溶液中的有机染料方面具有广阔的前景。