Biosynthesis of ZnO/Ag nanocomposites heterostructure for efficient photocatalytic degradation of antibiotics and synthetic dyes

Zeitschrift für Physikalische Chemie, Journal Year: 2024, Volume and Issue: 238(9), P. 1599 - 1622

Published: Feb. 17, 2024

Abstract This study addresses the pressing issue of environmental pollution caused by antibiotics and synthetic dyes in aquatic ecosystems, presenting a novel approach for their efficient photocatalytic degradation. Zinc oxide (ZnO)-based nanoscale photocatalysts, including ZnO nanoparticles (NPs) ZnO/Ag nanocomposite heterostructure (NCH), were synthesized through an innovative eco-friendly method utilizing extract derived from discarded lemon peels as biogenic reducing agent. The materials extensively characterized UV spectrophotometry, X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR). results confirmed different morphologies NPs NCH, with average sizes 20 nm 42 nm, respectively. Notably, NCH exhibited optical bandgap energies 3.2 eV 2.85 eV, respectively, signifying potential photocatalysts. Under natural sunlight irradiation, these demonstrated exceptional activity, achieving remarkable 98.8 % degradation rate metronidazole 90 ciprofloxacin just 12 min. Furthermore, effectively removed 84 Toluidine Blue 77 Congo red after 120 min, while enhanced rates to approximately 90.5 86 Red. research highlights significant physicochemical properties synthesis methods employed, positioning sustainable nanomaterials promising solutions mitigating effectively.

Language: Английский

---

Electron-hole recombination effect of SnO2 – CuO nanocomposite for improving methylene blue photocatalytic activity in wastewater treatment under visible light

Journal of King Saud University - Science, Journal Year: 2022, Volume and Issue: 35(1), P. 102388 - 102388

Published: Oct. 27, 2022

Heterojunction photocatalysts have gained much attraction in pollutant degradation applications due to their unique good adsorption and photocatalytic decomposition capacity more cycle durability. Tin oxide (SnO2) doped with copper (CuO) heterostructured photocatalyst was synthesized by a simple solution processes technique. X-ray diffraction fluorescence spectroscopy were used examine the structural properties of SnO2 - CuO heterostructure. Analyses FE-SEM TEM performed on samples determine surface morphology. The photodegradation property heterostructure studied using methylene blue (MB) model pollutant, where (90.3 % at 180 min) shown better than SnO2. Therefore, n-p-junction (SnO2 CuO) catalysis boosted MB detailed studies electron-hole pair recombination conducted n-p-junctions observe effect interface been published.

Language: Английский

---

Ni-MOF-74-derived ZnIn2S4/P-Ni-MOF-74 Z-scheme heterojunctions for highly efficient photocatalytic hydrogen evolution under visible light irradiation

Journal of Molecular Structure, Journal Year: 2023, Volume and Issue: 1284, P. 135398 - 135398

Published: March 20, 2023

Language: Английский

---

Synthesis of pure and Cd-doped hydroxyapatite for the photo-catalytic degradation of Amoxicillin and Ciprofloxacin: Crystallographic characterization using XRD

Journal of Hazardous Materials Advances, Journal Year: 2024, Volume and Issue: 13, P. 100406 - 100406

Published: Jan. 21, 2024

Nanosized hydroxyapatite (HAp) is considered an elementary material for artificial bone tissue engineering and the applications are expanding one of them photocatalytic degradation environmentally hazardous pollutants. In this research, HAp nanoparticles, in pure form doped with cadmium (Cd), were synthesized using a conventional wet-chemical precipitation method. Additionally, samples such as Cd-doped characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-Vis spectroscopy. Moreover, XRD analysis allowed detailed estimation crystallite size, assisting their tailoring increased activity. The sizes nano-crystallite Hap evaluated Scherrer Method (SM), Williamson-Hall (WHM), Size-Strain Plot (SSP), Halder-Wagner (HWM), Sahadat-Scherrer (SSM). models confirmed formation nano form. Cadmium doping showed great activity example at 150 min, 31% Amoxicillin 52% ciprofloxacin degraded upon 1.5 wt% Cd crystal. research demonstrated that crystal improved towards antibiotic solution (ciprofloxacin amoxicillin) under all test circumstances.

Language: Английский

---

Facile green fabrication of copper/polyvinylidene fluoride nanocomposite for pathogens disinfection and dye degradation in wastewater

Inorganic Chemistry Communications, Journal Year: 2024, Volume and Issue: 161, P. 112119 - 112119

Published: Jan. 23, 2024

Language: Английский

---

Facile synthesis of CuO/CePO4 nanocomposite for the photocatalytic degradation of organic pollutants under visible light

Inorganic Chemistry Communications, Journal Year: 2024, Volume and Issue: 161, P. 112043 - 112043

Published: Jan. 11, 2024

Language: Английский

---

Photocatalytic removal of methylene blue and Victoria blue R dyes using Tb and La-doped BaZnO2

Desalination and Water Treatment, Journal Year: 2024, Volume and Issue: 318, P. 100389 - 100389

Published: April 1, 2024

The synthesis of BaxM1-xZnO2 nanoparticles (NPs), where M represents La and Tb was achieved using sol-gel technique. This method involved the simultaneous substitution a single ion. structural, dielectric properties, morphology, elemental analysis, photo-catalysis distribution size produced nano-crystalline material were assessed. examination utilizes X-ray diffraction (XRD), UV Visible spectroscopy (UV-Vis), Fourier transform infrared (FTIR), measurement, scanning electron microscopy (SEM), energy dispersive (EDX). XRD pattern verifies that all synthesized possess hexagonal structure have effectively replaced various metal ions within standard crystal BaZnO2. lattice parameters, density, bulk porosity, grain determined BaxM1-xZnO2(M = La, Tb). catalyst proved to be good photocatalyst for VBR as it degraded up 90% in 20 minutes under light MB 80% 60 min 120 sunlight. photocatalytic activity (PCA) against methylene blue Victoria R conclusively shown entire sample displayed exceptional degradation

Language: Английский

---

Harnessing the potential of biochar-based catalysts for sustainable adsorptive and photocatalytic applications: A comprehensive review

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 189, P. 387 - 413

Published: May 29, 2024

Language: Английский

---

One-pot fabrication of C-doped synergistic wrinkly carbon nitride porous nanosheets: Rapid charge carriers' separation and boosted photocatalytic redox reactions

Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 141601 - 141601

Published: Jan. 1, 2025

Language: Английский

---

Synthesis and antimicrobial activity of silver nanoparticles: Incorporated couroupita guianensis flower petal extract for biomedical applications

Journal of King Saud University - Science, Journal Year: 2022, Volume and Issue: 35(1), P. 102455 - 102455

Published: Nov. 17, 2022

Recently, numerous plant-based synthesis techniques have been used to develop metal nanoparticles. The current study uses the medicinal plant extract of couroupita guianensis (CG) petals create biogenic silver nanoparticles in an environmentally friendly manner. Different techniques, including ultraviolet–visible spectroscopy (UV–vis), Fourier Transformation Infrared (FTIR), X-ray diffraction (XRD), and Dynamic Light Scattering (DLS) analysis, are evaluate synthesized From XRD results confirm emergence nanosilver crystalline arrangement with characteristic peaks at glancing angles 38.04°, 44.22°, 64.40°, 77.37°. UV–vis displays spectral absorption λmax = 282 nm shows formation Images produced Ag NPs taken a scanning electron microscope (SEM) show creation flower-shaped particles. functional behavior flavones, triterpenoids, polyphenols belonging has observed by ensuring their selective absorptions FTIR analysis had substantial antibacterial effect on Gram-positive (B. subtilis) Gram-negative (Escherichia coli) bacteria general. It is found become effective when symbiotic flower for enhancing properties. This composite product gives new cost-effective formulation more therapeutic possibilities. wide open avenues research possibilities lot future scopes. photocatalytic degradation efficiency CG-Ag methylene blue (MB) dye was evaluated under visible light irradiation indications material applications.

Language: Английский

---