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

0567688 - ÚMCH 2024 RIV GB eng J - Journal Article
El-Aziz, M. E. A. - Youssef, A. M. - Kamal, K. H. - Kelnar, Ivan - Kamel, S.
Preparation and performance of bionanocomposites based on grafted chitosan, GO and TiO2-NPs for removal of lead ions and basic-red 46.
Carbohydrate Polymers. Roč. 305, 1 April (2023), č. článku 120571. ISSN 0144-8617. E-ISSN 1879-1344
Grant - others:AV ČR(CZ) ASRT-19-06 3326
Program: Bilaterální spolupráce
Institutional support: RVO:61389013
Keywords : chitosan * graphene oxide * titanium dioxide nanoparticles
OECD category: Polymer science
Impact factor: 11.2, year: 2022
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0144861723000358?via%3Dihub

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.
Permanent Link: https://hdl.handle.net/11104/0338914