Preparation and performance of bionanocomposites based on grafted chitosan, GO and TiO2-NPs for removal of lead ions and basic-red 46

被引：23

作者：

Abd El-Aziz, M. E. ^{[1
]}

Youssef, A. M. ^{[2
]}

Kamal, Kholod H. ^{[3
]}

Kelnar, Ivan ^{[4
]}

Kamel, Samir ^{[5
]}

机构：

[1] Natl Res Ctr, Dept Polymers & Pigments, 33 El Bohouth St,PO 12622, Giza, Egypt

[2] Natl Res Ctr, Packaging Mat Dept, 33 El Bohouth St,PO 12622, Giza, Egypt

[3] Natl Res Ctr, Water Pollut Res Dept, 33 El Bohouth St,PO 12622, Giza, Egypt

[4] Czech Acad Sci, Inst Macromol Chem, Heyrovskeho Nam 2, Prague 16206, Czech Republic

[5] Natl Res Ctr, Cellulose & Paper Dept, 33 El Bohoth St, Giza, Egypt

来源：

CARBOHYDRATE POLYMERS | 2023年 / 305卷

关键词：

Chitosan; Graphene oxide; Titanium dioxide nanoparticles; Heavy metal; Dye; adsorption; WASTE; MONTMORILLONITE; ADSORPTION; NANOCOMPOSITES; KINETICS; WATER; DYE;

D O I：

10.1016/j.carbpol.2023.120571

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Wastewater rich in heavy metals and organic compounds represents one of the essential environmental pollutants. Therefore, a practical approach is to fabricate eco-friendly polymer-based systems with a high ability to absorb pollutants. Herein, bionanocomposites consisting of chitosan (Cs) grafted by various monomers, such as acrylamide (Am), acrylic acid (AA), and 4-styrene sulfonic acid (SSA), and hybrid nanoparticles of graphene oxide/titanium dioxide nanoparticles (GO@TiO2-NPs) were fabricated. The prepared nanomaterials and bionanocomposites characterized via various tools. The data illustrated that the prepared GO had a thickness of 10 nm and TiO2-NPs had a diameter of 25 nm. In addition, the grafted chitosan (gCs) using Am and SSA had the largest surface area (gCs2; 22.89 nm) and its bionanocomposite (NC5; 104.79 nm). In addition, the sorption ability of the 0.15 g of prepared bionanocomposites to the (100 mg/L) of lead ions (Pb2+) and (25 mg/L) of basic-red 46 (BR46) under various conditions has been studied. The results showed that gCs3 and NC5 had the highest adsorption of Pb2+ (79.54 %) and BR46 (79.98 %), respectively. The kinetic study results of the sorbents obeyed the Pseudo second-order model. In contrast, the isothermal study followed the Freundlich adsorption model for Pb2+ and the Langmuir adsorption model for BR46.

引用

页数：11