"Enhanced removal of cationic dyes using copper-based MOF-graphene oxid" by Maryam Naseer, Sadia Nazir et al.
 

Enhanced removal of cationic dyes using copper-based MOF-graphene oxide composite: Synthesis, characterization and performance evaluation

Document Type

Article

Source of Publication

Chemical Engineering Science

Publication Date

3-15-2025

Abstract

HKUST-1, graphene oxide (GO), and their composite (HKUST-1/GO) were synthesized and characterized via FTIR, XRD, SEM, BET, and TGA. The composite was evaluated for the adsorption of Astrazon Pink FG, Cationic Red 3R, and Basic Yellow 28 dyes. Batch adsorption experiments were conducted to optimize key parameters, with maximum removal observed under the following conditions: AP FG (pH 9, contact time 80 min, 30 °C), CR 3R (pH 11, contact time 80 min, 30 °C), and BY 28 (pH 10, contact time 20 min, 30 °C). The HKUST-1/GO composite exhibited high removal efficiencies of 82.35 % (AP FG), 78.73 % (CR 3R), and 75.89 % (BY 28), with corresponding maximum adsorption capacities of 7.445 mg/g, 6.42 mg/g, and 5.58 mg/g, respectively. The adsorption followed a pseudo-second-order model and well described by Freundlich, Langmuir, Halsey, and Temkin isotherms models. Thermodynamic parameters confirmed spontaneous, exothermic dyes adsorption onto HKUST-1/GO, effectively treating industrial effluent.

ISSN

0009-2509

Publisher

Elsevier BV

Volume

307

Disciplines

Life Sciences

Keywords

Composite, Dye adsorption, Equilibrium, Graphene oxide, Kinetics, Metal-organic framework, Thermodynamic, Wastewater treatment

Scopus ID

85217922778

Indexed in Scopus

yes

Open Access

no

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