Related Experiment Video
Updated: Feb 4, 2026

Author Spotlight: Metallic Nanocomposites to Eliminate Antibiotic-Resistant Bacteria
Published on: October 4, 2024
Alginate/calix[4]arenes modified graphene oxide nanocomposite beads: Preparation, characterization, and dye
Abbas Mohammadi1, Amir Hossein Doctorsafaei1, Khalid Mahmood Zia2
1Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran.
Abstract:
The present study reports the preparation of novel alginate/calix[4]arenes modified graphene oxide nanocomposite beads (alginate/C4As-GOs) based on p-tert-butyl calix[4]arene and sodium p-sulfonatocalix[4]arene modified GO nanosheets (CGO and SGO). Different properties of alginate/GO and alginate/C4As-GOs nanocomposite beads were investigated by FTIR, XRD, TGA, SEM, and swelling ratio analysis. The alginate beads containing SGO nanosheets (ABSGO) showed a thin layered structure, high porosity, and high swelling ratio compared to other samples. Moreover, the batch adsorption studies on methylene blue exhibited that ABSGO beads act as a high-performance adsorbent among samples and can be introduced as a novel and efficient dye adsorbent. In the case of ABSGO adsorbent, the equilibrium adsorption data were modeled using the Langmuir and Freundlich isotherms. According to Langmuir isotherm equation, the maximum adsorption capacity of ABSGO was obtained 170.36 mg/g. The kinetic adsorption studies confirmed that the adsorption of MB onto ABSGO well obey the pseudo-second-order kinetic model.
More Related Videos
07:14Synthesis of Graphene-Hydroxyapatite Nanocomposites for Potential Use in Bone Tissue Engineering
Published on: July 27, 2022
09:15Iridium Oxide-reduced Graphene Oxide Nanohybrid Thin Film Modified Screen-printed Electrodes as Disposable Electrochemical Paper Microfluidic pH Sensors
Published on: November 22, 2016
Related Concept Videos
Oxidation Numbers
Analyte Adsorption and Distribution
Pyruvate Oxidation
First, the enzyme pyruvate dehydrogenase removes the carboxyl group from pyruvate and releases it as carbon dioxide. The stripped molecule is then oxidized and releases electrons, which are then picked up by NAD+...
Oxidation-Reduction Reactions
Dipeptidyl Peptidase 4 Inhibitors
Oxidation of Alcohols
The process of oxidation in a chemical reaction is observed in any of the three forms: