Understanding the physicochemical properties of Zn–Fe LDH nanostructure as sorbent material for removing of anionic and cationic dyes mixture
Rehab K. Mahmoud, Mohamed Taha, Amal Zaher, Rafat M. Amin
TL;DR
This study explores how a Zn–Fe layered double hydroxide material can effectively remove different types of dyes from water.
Contribution
The work introduces a Zn–Fe LDH nanostructure with demonstrated selectivity for anionic and cationic dye removal and photocatalytic activity.
Findings
Zn–Fe LDH selectively adsorbs anionic methyl orange more than cationic dyes methylene blue and malachite green.
Adsorption capacities were 230.68, 133.29, and 57.34 mg/g for methyl orange, methylene blue, and malachite green in single dye solutions.
The material showed 92.2% and 84.7% dye degradation at 10 and 20 mg/L concentrations as a photocatalyst.
Abstract
In our work, the removal of cationic and anionic dyes from water was estimated both experimentally and computationally. We check the selectivity of the adsorbent, Zn–Fe layered double hydroxide (LDH) toward three dyes. The physical and chemical properties of the synthesis adsorbent before and after the adsorption process were investigated using X-ray photoelectron spectroscopy, energy dispersive X-ray, X-ray diffraction, FT-IR, HRTEM, and FESEM analysis, particle size, zeta potential, optical and electric properties were estimated. The effect of pH on the adsorption process was estimated. The chemical stability was investigated at pH 4. Monte Carlo simulations were achieved to understand the mechanism of the adsorption process and calculate the adsorption energies. Single dye adsorption tests revealed that Zn–Fe LDH effectively takes up anionic methyl orange (MO) more than the cationic…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsLayered Double Hydroxides Synthesis and Applications · Nanomaterials for catalytic reactions · Advanced Photocatalysis Techniques