Green Synthesis of Stable and Reusable Zinc Nanoparticle Adsorbents for the Removal of Carcinogenic Heavy Metals in Aqueous Solution DOI Creative Commons
Chandana Narasimha Rao, M. Sujatha

Toxicology International, Journal Year: 2023, Volume and Issue: unknown, P. 639 - 650

Published: Dec. 11, 2023

industrial applications led to an alarming rise in their presence, heightening the potential for contamination various environmental mediums. In order mitigate adverse impacts of these heavy metals, it is imperative reduce concentrations samples. Therefore, this study aimed produce zinc nanoparticles employing Diospyros chloroxylon (Roxb.) effectively eliminate carcinogenic metals from water. The produced were subjected comprehensive characterization using FT-IR, XRD, SEM, and EDX techniques. XRD data indicated emergence a hexagonal wurtzite structure. SEM images illustrated spherical morphology synthesized particles, with average diameter measuring 53 nm having elemental accounting 69.4% composition. subsequent metal sorption experiments encompassed range variables, remarkably, displayed exceptional adsorption capabilities, achieving maximum removal rates 95.81%, 90.13%, 91.25% within equilibrium time 90 minutes Cr, Pb, Cd, respectively. process adhered pseudo-first-order reaction kinetics model, high correlation coefficients 0.9561, 0.99058, 0.98481, along respective rate constants (K) 0.483, 0.233, 0.328 Cd. outcomes highlight that exhibit biocompatibility, stability, reusability, making them promising tool removing polluted water sources.

Language: Английский

Recent progress on plant extract-mediated biosynthesis of ZnO-based nanocatalysts for environmental remediation: Challenges and future outlooks DOI
Osman Ahmed Zelekew, Haileyesus Hatano Haitosa, Xiao Yun Chen

et al.

Advances in Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 317, P. 102931 - 102931

Published: May 25, 2023

Language: Английский

Citations

56
Green Zinc Oxide (ZnO) Nanoparticle Synthesis Using Mangrove Leaf Extract from Avicenna marina: Properties and Application for the Removal of Toxic Metal Ions (Cd2+ and Pb2+) DOI Open Access
Bandar A. Al‐Mur

Water, Journal Year: 2023, Volume and Issue: 15(3), P. 455 - 455

Published: Jan. 23, 2023

This work used a variety of experimental studies to explore the elimination cadmium and lead ions from aqueous solutions using novel method for biosynthesis nanoparticles zinc oxide sorbents (ZnO-NPs) mangrove leaf extract. The influences important factors affecting adsorption technique were determined, including pH value, contact duration, initial concentration metal ions, nano-adsorbent dose, different temperatures, interfering ions. To confirm formation synthesized ZnO NPs validate properties green-synthesized sorbents, analytical methods used, UV–vis spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy-dispersive (EDX). results showed that average diameter ZnO-NPs was approximately 29.1 nm (spherical at nano-size regime). reaction rate examined by comparing pseudo-second order against pseudo-first templates. From observed records, Cd2+ Pb2+ on fitted well with template. Freundlich, Langmuir, Dubinin–Radushkevich, Tempkin equilibrium isotherm models evaluate sorption onto sorbent material. Based parameters extracted each model, as model-fitting values, preferential isotherms ion Dubinin–Radushkevich Langmuir models, respectively. have potential be an effective promising adsorbent material eliminating water solutions.

Language: Английский

Citations

32
Recent developments in the adsorption of uranium ions from wastewater/seawater using carbon-based adsorbents DOI
Hemant Mittal,

AM Alfantazi,

Saeed M. Alhassan

et al.

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 12(1), P. 111705 - 111705

Published: Dec. 14, 2023

Language: Английский

Citations

23
Polypyrrole-coated zinc/nickel oxide nanocomposites as adsorbents for enhanced removal of Pb(II) in aqueous solution and wastewater: An isothermal, kinetic, and thermodynamic study DOI
Layth I. Abd Ali, Hasan F. Alesary, Hani K. Ismail

et al.

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 64, P. 105589 - 105589

Published: June 13, 2024

Language: Английский

Citations

14
Hydroxyapatite-Magnetite Nanocomposites: Synthesis and Superior Adsorption Properties for Lead Ion Removal, with Insights into Intraparticle Diffusion, Kinetic Modeling, and Phase Dependency DOI

Abdelmegeed F. Abdelmegeed,

Murtaza Sayed,

Mohamed Abbas

et al.

Ceramics International, Journal Year: 2024, Volume and Issue: 50(19), P. 36074 - 36087

Published: Oct. 1, 2024

Language: Английский

Citations

10
Advances in Metal Oxide‐based Nanocatalysts for Biodiesel Production: A Review DOI
Naveen Chandra Joshi, Prateek Gururani, Pooja Bhatnagar

et al.

ChemBioEng Reviews, Journal Year: 2023, Volume and Issue: 10(3), P. 258 - 271

Published: May 22, 2023

Abstract The demand for renewable fuels has risen as a result of increasing human population, urbanization, industrialization, and transport systems. Biodiesel production using metal oxide‐based heterogeneous catalysts is an efficient, sustainable, environmentally friendly approach. Because their recovery, reusability, consistency, may be preferable to homogeneous catalysts. Since the last few decades, oxides alkali earth transition metals composite materials have been used nanocatalysts in biodiesel fuel. Utilization inorganic oxide nanoparticles (MONPs) producing gained increased attention because advanced physical chemical characteristics. In this review, applicability nanocomposite‐based production, transesterification reactions with nanocatalytic systems, important parameters that affect these are discussed.

Language: Английский

Citations

22
Hexavalent chromium removal using reduced graphene oxide-zinc oxide composite fabricated via simple pyrolysis method DOI Creative Commons

Reshma S Philip,

N Aparna,

Meril Mathew

et al.

Applied Surface Science Advances, Journal Year: 2023, Volume and Issue: 19, P. 100535 - 100535

Published: Dec. 15, 2023

The contamination of water by heavy metals from various industrial effluents is a significant factor contributing to the scarcity clean worldwide. To address this issue, there need develop low-cost adsorbents remove contaminated reduced graphene oxide (rGO) based composites are efficient adsorbers metals. In study, green and rapid single-step heating process was utilized prepare both rGO rGO/ZnO composite materials, avoiding use any toxic reagents. synthesized sucrose zinc acetate demonstrates remarkable ability adsorb hexavalent chromium (Cr(VI)). Cr adsorption studies were carried out varying adsorbent, contact time, initial pH, concentration. efficiency five times higher than that pure rGO. mechanism Cr(VI) onto adsorbent electrostatic interaction, complexation, pore filling, reduction, identified through Zeta potential measurement, BET, EDX, XPS analysis. These suggest has great potency as cost-effective for removing contaminants effluents.

Language: Английский

Citations

19
Cobalt/Iron Bimetallic Biochar Composites for Lead(II) Adsorption: Mechanism and Remediation Performance DOI Creative Commons
Jingyu Zhao,

Yuhong Qin,

Yue Liu

et al.

Molecules, Journal Year: 2024, Volume and Issue: 29(7), P. 1595 - 1595

Published: April 3, 2024

The performance of nano-zero-valent iron for heavy metal remediation can be enhanced via incorporation into bimetallic carbon composites. However, few economical and green approaches are available preparing composite materials. In this study, novel Co/Fe biochar composites (BC@Co/Fe-X, where X = 5 or 10 represents the CoCl2 concentration 0.05 0.1 mol L−1) were prepared adsorption Pb2+. effect cross-linked ions on Pb2+ was investigated, with using L−1 Co2+ (BC@Co/Fe-5) exhibiting highest performance. Various factors, including period, concentration, pH, affected by BC@Co/Fe-5. Further characterisation BC@Co/Fe-5 before after methods such as X-ray diffraction photoelectron spectroscopy suggested that mechanism involved (i) reduction to Pb0 Co/Fe, (ii) corrosion generate Fe2+ fix in form PbO, (iii) biochar. Notably, exhibited excellent simulated Pb2+-contaminated water soil good recyclability.

Language: Английский

Citations

4
Fe 3 O 4 Nanoparticles Decorated with a Modified Carbon Quantum Dot Shell: Synthesis, Characterization and Its Evaluation as an Efficient Adsorbent for Cu(ii) and Zn(ii) Ions Adsorption DOI
Tahereh Akbarpour, Ardeshir Khazaei, Mahsa Mohammadi

et al.

Polycyclic aromatic compounds, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 23

Published: Jan. 18, 2025

The present study focuses on the adsorption efficiency of nanomagnetic Fe3O4@CQDs/Si(OEt)(CH2)3NH/CC/PEG-400 (Fe3O4@CQDs/NH/CC/PEG-400) as an adsorbent for Cu2+ and Zn2+ removal from contaminated solutions through technique. effect pH, contact time, dosage in 45 ppm concentration was also evaluated. By increasing at pH = 7 time 120 min, capacity increases so that maximum ions is 219.9 159.2 mg/g, respectively. Based correlation coefficient (R2), Langmuir isotherm pseudo-second-order models were selected. proposed mechanisms are formation complexes, interparticle diffusion, ion exchange interaction, electrostatic interaction. results show can be used five cycles with 91% efficiency.

Language: Английский

Citations

0
Green synthesized ZnO NPs from bamboo stem: optical, structural, morphological, and chemical studies DOI
Sanjeev Kimothi, Priyanka Thakur, Madan Lal

et al.

International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde), Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Abstract Bamboo is rich in nutrients, bioactive compounds, and antioxidants. Phenols, flavonoids, vitamins C E are the primary antioxidants present. In this report, pristine ZnO NPs were prepared by a green co-precipitation route using bamboo stem extract. The Rietveld refined X-ray diffraction pattern confirmed pure phase formation of having wurtzite hexagonal structure with space group = P 63 mc . William˗Hall method was used to calculate crystallite size which found be 35.38 nm compressive strain −1.43 × 10 −3 Scanning electron microscopy mushroom-like surface morphology. Fourier transform infrared spectroscopy study, antisymmetric stretching confirms Zn–O bonding. A strong absorption peak around 380 observed ultra-violet spectra broad emission band at ∼389.5 (3.18 eV) photo-luminescence spectroscopy.

Language: Английский

Citations

0