Iron Oxide Dust-Derived Fe <sub>3</sub> O <sub>4</sub> -CuO Nanocomposite for Adsorptive Removal of Congo Red and Benzimidazole
High Resolution Image Download MS PowerPoint Slide Herein, industrial iron oxide dust generated was upcycled into a sheet-like porous Fe 3 O 4 -CuO nanocomposite for the adsorption-based removal of organic pollutants from water. The Fe 3 O 4 -CuO adsorbent was synthesized through a simple acid-assisted reduction method and characterized using FESEM, HRTEM, PXRD, XPS, and BET analyses. The as synthesized Fe 3 O 4 -CuO showed efficient adsorption toward Congo Red (CR), an anionic azo dye, and benzimidazole (BZI), a pharmaceutical contaminant. Adsorption kinetics followed the pseudo-second-order model, indicating that surface interactions played a major role in the uptake process, while isotherm studies revealed heterogeneous multilayer adsorption for CR and monolayer adsorption for BZI, with maximum adsorption capacities of ∼217 and ∼788 mg g −1, respectively. The adsorption behavior was strongly influenced by solution pH and temperature, confirming the role of electrostatic interactions.
Authors
- Sumit Kumar Sonkar (ORCID: https://orcid.org/0000-0002-2560-835X)
- Jaidev Kaushik (ORCID: https://orcid.org/0000-0002-8244-2069)
- Nicky Kumar Lamba (ORCID: https://orcid.org/0009-0004-3827-6050)
- Diksha Prajapati
- Twinkle
- Chahat
Institutions
- Department of Physics, Mathematics and Informatics (BY)
- SRM University (IN)
- Malaviya National Institute of Technology Jaipur (IN)
Publication Details
- Journal
- ACS Sustainable Resource Management
- Published
- 2026-06-08
- DOI
- https://doi.org/10.1021/acssusresmgt.6c00115
- Primary Topic
- Adsorption and biosorption for pollutant removal
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- SRM Institute of Science and Technology
- Science and Engineering Research Board