Design and optimization of titania doped carbon nanocomposites for efficient cadmium removal from aqueous solutions

Asmaly, Hamza A. and Elbager, Mosaab A. and Kabbashi, Nassereldeen Ahmed and Saleh, Tawfik A. (2026) Design and optimization of titania doped carbon nanocomposites for efficient cadmium removal from aqueous solutions. Inorganic Chemistry Communications, 188 (Pt 1). pp. 1-12. ISSN 1387-7003 E-ISSN 1879-0259

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Abstract

This research aimed to develop and optimize a titania doped carbon nano adsorbent composite (CNAs/TiO2) for the removal of cadmium (Cd2+) from aqueous solutions. Carbon nanotubes and nanofibers were acid-treated and combined with varying ratios of TiO2 using a controlled impregnation-calcination method. Optimization of synthesis parameters, including titania loading, sonication time, and calcination temperature, was conducted using Response Surface Methodology (RSM) with a Central Composite Design (CCD). Characterization via BET, SEM, TGA, FTIR, and XRD revealed enhanced surface area (increased from 92 to 184 m2/g), improved morphology, thermal stability, and the presence of oxygen-rich functional groups favorable for Cd2+ adsorption. Batch adsorption experiments showed maximum adsorption capacities reaching 52.81 mg g 1 under optimal conditions. The Langmuir model (R2 = 0.994) best described the adsorption isotherm, while the pseudo-first order model showed the highest correlation coefficient (R2 = 0.978) among kinetic models. This study fills a gap in the literature by demonstrating how RSM-optimized TiO2 doping can significantly enhance the performance of carbon nanomaterials for heavy metal remediation, offering a scalable and cost-effective solution for wastewater treatment.

Item Type:	Article (Journal)
Uncontrolled Keywords:	Titanium, Cadmium, CNC, Optimization
Subjects:	T Technology > TP Chemical technology > TP155 Chemical engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Biotechnology Engineering Kulliyyah of Engineering
Depositing User:	Dr Nassereldeen Kabbashi
Date Deposited:	20 Jul 2026 09:24
Last Update:	20 Jul 2026 09:24
Queue Number:	2026-07-Q3943
URI:	http://irep.iium.edu.my/id/eprint/129764

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