One‐step hydrothermal synthesis of a green NiCo‐LDHs‐rGO composite for the treatment of lead ion in aqueous solutions

The Canadian Journal of Chemical Engineering, Journal Year: 2023, Volume and Issue: 102(3), P. 1248 - 1261

Published: Oct. 24, 2023

Abstract Herein, we have synthesized a microspherical nickel‐cobalt‐layered double hydroxides‐reduced graphene oxide composite (NiCo‐LDHs‐rGO) through one‐step hydrothermal method and then used it as an adsorbent for the removal of Pb 2+ from aqueous solutions. Fourier transform infrared spectrophotometry (FT‐IR), field emission scanning electron microscopy (FESEM), mapping elemental analysis, dispersive x‐ray spectroscopy (EDX), diffraction analysis (XRD), Brunauer–Emmett–Teller (BET) were characterization adsorbent. Factors affecting adsorption ion such solution pH, dosage, contact time, competing ion, regeneration investigated in batch mode by NiCo‐LDHs‐rGO. Under optimized conditions based on Taguchi (pH = 5.0, dosage 20 mg, time 30 min), highest percentage was found to be 99.7% 100 mg L −1 . According results, NiCo‐LDHs‐rGO exhibited high preference over Cu , Zn Cd This regenerated several cycles (using 0.01 M HCl) with no significant deterioration performance. Analyses isotherm models revealed that follows Freundlich maximum capacity 200 g Also, kinetic data confirmed pseudo second order equation is best model predicting kinetics. Furthermore, Simulink modelling illustrated kinetics onto done accuracy continuous stirred‐tank reactor. Finally, dual interactions effective parameters can modelled polynomial equations MATLAB, according model, pH clearly most important feature among all parameters.

Language: Английский

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Preparation of nanodiamond anchored on copper tannic acid as a heterogenous catalyst for synthesis of 1,4-benzodiazepines derivatives

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: April 15, 2024

Abstract In this research, a new and eco-friendly heterogeneous catalyst (ND@Tannicacid-Cu) was synthesized based on nanodiamond copper tannic acid via esterification process. The as-prepared characterized by Fourier transforms infrared spectroscopy (FT-IR), energy dispersive X-ray (EDX), scanning electron microscopy (SEM), diffraction (XRD) methods. catalytic efficacy of the intended examined one-step three-component reaction 1,4-benzodiazepine derivatives from mixture ortho-phenylenediamine, aromatic aldehydes, dimedone under mild conditions. all instances, corresponding 2,4-benzodiazepines were with high efficiency, short time, straightforward work up procedure, no requirement for column-chromatography, cost-effective catalyst. easily recycled using fillers, it can be reused eight cycles without significantly diminishing its performance.

Language: Английский

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A Comprehensive Review of Magnetic Nanocatalysts for C−S, C−Se Bond Formation

ChemistryOpen, Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

Abstract This review manuscript examines magnetic nanocatalysts and their pivotal role in forming carbon‐sulfur (C−S) carbon‐selenium (C−Se) bonds. The study delves into the latest advancements synthesis, characterization, application of nanocatalysts, highlighting unique advantages, including enhanced catalytic activity, superior selectivity, easy recovery through separation, which align with principles green chemistry. Through a critical analysis recent research findings, this also explores mechanistic pathways facilitated by these offering insights operational efficiency potential for recyclability. aims not only to catalog current achievements burgeoning field but identify challenges propose future directions developing more efficient, sustainable, versatile systems C−S C−Se bond formation. By encompassing broad spectrum ranging from bare magnets functionalized composite materials, is comprehensive resource researchers engaged organic catalysis, sustainable

Language: Английский

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New and robust magnetically recoverable catalyst for the green synthesis of benzothiazoles and benzoxazoles

Polyhedron, Journal Year: 2025, Volume and Issue: unknown, P. 117564 - 117564

Published: April 1, 2025

Language: Английский

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Adsorption of Cu (II) from water by an innovative graphene oxide-carboxymethyl cellulose-acrylamide composite: characterisation, performance, and mechanism

International Journal of Environmental & Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 22

Published: April 22, 2025

Language: Английский

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Fabrication of protective epoxy coatings based on zinc tannate and diethylentriamine: Machine learning-driven insights for long-term performance predictions

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2025, Volume and Issue: unknown, P. 137096 - 137096

Published: May 1, 2025

Language: Английский

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Enhanced lead (II) adsorption from aqueous solution using sawdust-derived amino-decorated cellulose: Optimization, isotherm, kinetics, and reusability studies

Results in Chemistry, Journal Year: 2024, Volume and Issue: 7, P. 101506 - 101506

Published: Jan. 1, 2024

Water pollution, driven by Pb2+, poses a significant threat to biotics and the environment. A promising solution address issue is utilization of cellulose from lignocellulosic materials as an adsorbent remove or reduce Pb2+ wastewater. However, reported, adsorption capacities native adsorbents vary depending on their plant source, metal binding capacity not satisfactory expected due lack robust chelation sites, particularly amino groups. Thus, this study aimed improve uptake utilizing prosopis juliflora stem, previously unexplored through ethylenediamine (EDA) grafting. FTIR, XRD, FE-SEM, EDX, TGA evaluated physicochemical properties amino-decorated (ADC) adsorbent. The effect experimental variables (initial concentration, ADC dose, contact time) percent removal was investigated analyzed using Box-Behnken Design (BBD). Analysis variance (ANOVA) revealed that, among interaction effects, only interactions between initial concentration dose significantly affected (P < 0.0008). optimal onto at conditions: pH 5, 0.47 g, 52 mg L−1, time 118 min 97.37 % 53.86 g−1, respectively. agreed well with Langmuir isotherm pseudo-second-order kinetic model. analysis demonstrated that created monolayer for attachment during process, maximum 64.72 g−1. Additionally, kinetics indicated chemisorption dominant mechanism Pb2+. Results regeneration studies retained its good up four cycles.

Language: Английский

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Tannic acid as a green chemical for the removal of various heavy metals: A critical review of recent developments

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 375, P. 124390 - 124390

Published: Feb. 1, 2025

Language: Английский

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A Polyanionic Hyaluronic Acid-Based Hydrogel with Sustainable Recycling for Efficient Removal of Fe3+, Cd2+, and Pb2+ Ions as Well as Improving the Utilization of Sorghum

Published: Jan. 1, 2025

Language: Английский

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Fabrication of a chitosan-grafted-4‑vinylpyridine/thiol-amine-HZSM-5 nanocomposite via casting method in adsorption of heavy cations from water systems: an evaluation of adsorption mechanism

Environmental Science and Pollution Research, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Language: Английский

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