Dumbbell-Shaped Nanoporous CaCO₃ for Phosphate Removal

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

Language: Английский

Modified Silica Particles Coated with Cu-Al Layered Double Hydroxide for Phosphate and Arsenate Removal in Water Treatment

Molecules, Journal Year: 2025, Volume and Issue: 30(10), P. 2138 - 2138

Published: May 13, 2025

Environmental pollution remains one of the most pressing challenges facing modern society, with removal toxic substances from water sources being particular concern. In this study, a composite material was synthesized by combining Cu-Al layered double hydroxides (CuAl-LDHs) modified silica particles, aiming to develop an efficient and environmentally friendly adsorbent for phosphate arsenate ions water. CuAl-LDH, Cu2+/Al3+ molar ratio 2:1, using co-precipitation method in presence maintaining LDH/SiO2 mass 2:1. The particles were functionalized 3-glycidyloxypropyltrimethoxysilane (GLYMO) followed modification polyethyleneimine (PEI) enhance their adsorption properties. X-ray diffraction (XRD) confirmed successful deposition CuAl-LDH on surface, while scanning electron microscopy (SEM) revealed porous structure uniform LDH. Adsorption experiments performed evaluate efficiency under varying conditions. Equilibrium capacities, based Langmuir isotherm model, determined be 44.6 mg·g-1 (PO43-) 32.3 (As(V)) at 25 °C. sorption behavior better described Freundlich which yielded KF values 15.4 L·mg-1 13.9 arsenate. Both batch kinetic high composite, demonstrating its potential as promising treatment applications.

Language: Английский

Magnetic Layered Double Hydroxide Nanocomposites: Synthesis, Catalytic Performances, Environmental and Biological Applications

Energy & environment materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 28, 2025

In the present review, we addressed synthesis and applications of magnetic layered double hydroxide nanocomposites in different scientific areas including catalysis, environmental remediation, biological functions. First, appraised varied approaches for hydroxides (LDHs), containing co‐precipitation, hydrothermal, sol–gel, ion‐exchange, urea hydrolysis, reconstruction methods. Afterward, concentrated on utility LDH‐based composites evaluated their catalytic effectiveness 4‐nitrophenol reduction, coupling reactions, preparation polycyclic aromatic compounds, oxidation reactions. Next, applicability LDHs was assessed removal water pollutants dyes. Ultimately, discussed efficiency LDH like drug delivery. Investigating obtained results reviewed reports demonstrated auspicious performance these compounds all above‐mentioned fields. Overall, manifested a satisfactory outlook various due to stability, remarkable flexibility, relatively proper surface area, appropriate adsorption capacity, as well propitious retrievability reusability character.

Language: Английский