Current Food Science and Technology Reports, Год журнала: 2024, Номер 3(1)
Опубликована: Ноя. 25, 2024
Язык: Английский
Materials Science for Energy Technologies, Год журнала: 2024, Номер unknown
Опубликована: Июль 1, 2024
In this study, we investigated the electrochemical catalysis potential of hybrid nanocomposites containing CdO, Co and ZnO nanocomposites, as opposed to Zn-O doped have weaker Coulomb interactions due their ionic bonds. Because CdO form a covalent bond, interacts more strongly with O than Zn. order reduce nanoparticle crystallinity, oxygen defects improve interaction between −O in lattice. From SEM micrographs, it appears that does not completely change under influence dopants. It can be seen from image both materials very tightly packed particles. The dopants prevent them absorbing large range visible wavelengths. is energy-dense for 5.28 eV compare 5.14 nanocomposites. fact matrix has tuneable bandgap evident since different types are used its manufacture. There at least three distinct absorption modes around 450, 498, 676 cm−1. addition 450 cm−1 498 vibrational modes, Co-O stretching along [1 0 1] plane also been observed As method studying charge carriers, photoluminescence spectroscopy usually used. This analyze electron-hole pairs (e−/h+) formed by semiconducting blue emission luminescence band 615 nm valence 635 nm. With increasing cobalt zinc concentrations, nanomaterials lose remanent magnetization. demonstrated significant coercive effects pure additively incorporated solutions regardless anisotropic, morphological, porosity, particle size distribution. Electrochemical impedance spectrum measurements were conducted 100 kHz 0.01 Hz. According Nyquist plot, purity Co, show high frequency resistance transfer. Nanocomposites contained & exposed UV light 120 min remove solution. degradation MO virtually nonexistent when no photocatalyst present, but photocatalyst, reach 92.56 %.
Язык: Английский
Процитировано
9
Microscopy Research and Technique, Год журнала: 2024, Номер 87(10), С. 2312 - 2320
Опубликована: Май 16, 2024
In this study, silver sulfide nanoparticles (Ag
Язык: Английский
Процитировано
7
Desalination and Water Treatment, Год журнала: 2024, Номер 319, С. 100570 - 100570
Опубликована: Июнь 27, 2024
Researchers have shown significant interest in the creation of sustainable green techniques for synthesising metal oxide nanomaterials past few years. Plant-mediated production is considered an affordable and feasible alternative to traditional physical chemical approaches. This study presents a straightforward approach environmentally friendly copper nanoparticles (CuO NPs) by solution combustion technique utilising Jasminum sambac Flower Extract. The CuO NPs produced during biosynthesis were analysed using UV-Vis, XRD, FT-IR, SEM, TEM, HPLC, BET EDX techniques. SEM pictures reveal that fragments possess sponge-like structure characterised substantial surface area. An investigation into photocatalytic activity shows they are effective as catalyst breakdown methylene blue (MB) when exposed UV solar radiation. Furthermore, demonstrated pH dependence MB. According study, best starting concentration dye breaking down things completely 2.5 parts per million (ppm), which results remarkable 79 % disintegration rate. findings indicate ability effectively treat water decomposing contaminants such blue, providing method treating wastewater.
Язык: Английский
Процитировано
7
Materials, Год журнала: 2024, Номер 17(12), С. 2890 - 2890
Опубликована: Июнь 13, 2024
In the present work, magnesium oxide (MgO) and lead (PbO) nanoparticles were prepared by co-precipitation method. Their structural parameters morphology investigated using XRD, HRTEM, FTIR. The formation of phases was seen to have small average crystallite sizes an orthorhombic crystal structure for both MgO PbO nanoparticles. results HR-TEM showed irregularly shaped nanoparticles: quasi-spherical or rod-like shapes spherical-like nanoparticles, respectively. produced nanoparticles’ size X-ray diffraction analysis found be 17 nm 41 On other hand, it observed from calculations that optical band gap obeys indirect allowed transition. calculated values 4.52 4.28 eV NPs, MB extracted wastewater composites via absorption. Using a variety kinetic models, adsorptions examined. Out all particles, discovered best. Furthermore, models currently under consideration, pseudo-second-order model best fit degradation mechanism. resultant could beneficial degrading specific organic dyes water purification, as well applications needing wider gap.
Язык: Английский
Процитировано
6
BioNanoScience, Год журнала: 2024, Номер unknown
Опубликована: Июнь 4, 2024
Язык: Английский
Процитировано
2
NANO, Год журнала: 2024, Номер 19(10)
Опубликована: Май 4, 2024
In this study, we report the synthesis of silver nanoparticles (AgNP’s) by reducing ions from a solution nitrate with an aqueous extract Azadirachta indica. Using as catalyst, were formed in 8[Formula: see text]min without use toxic chemicals. As evidenced UV-vis spectroscopy, broad surface plasmon resonance spectrum at 225[Formula: text]nm was detected, which indicates colloidal is stable and produces nanoparticles. revealed fourier transform-infrared spectrometer (FTIR) analysis, flower contained variety biomolecules that acted capping agents for AgNPs. determined X-ray diffraction (XRD), displayed crystalline structure ranged size 18 to 39[Formula: text]nm. addition these findings, transmission electron microscopy (TEM) images showed spherical rod-shaped, confirmed scanning (SEM) energy dispersive spectroscopy (EDAX). A pathogenic bacteria, such Klebsiella pneumoniae, Escherichia coli, Bacillus subtilis Staphylococcus aureus, tested against AgNP’s antibacterial properties. significant inhibition zone observed coli when AgNPs applied different concentrations. Silver shown have antidiabetic effects through diphtheria assay rates ranging 31.09% 83.33% concentrations 50–250[Formula: text][Formula: text]g/mL. researchers seek natural sources compounds potential health benefits, also investigated their antioxidant
Язык: Английский
Процитировано
1
Microscopy Research and Technique, Год журнала: 2024, Номер 88(1), С. 73 - 91
Опубликована: Авг. 27, 2024
Abstract As a result of their unique and novel properties, nanocomposites have found applications in wide variety fields. The purpose this study is to demonstrate the ability synthesize nanoparticles consisting zinc oxide (ZnO) graphene (GO) via sol–gel techniques. An x‐ray diffractometer (XRD) as well UV–visible spectrometer were used determine crystalline optical characteristics prepared samples. A hexagonal wurtzite crystal structure was observed both pure ZnO those that contain GO based on XRD results. It estimated average crystallite size broadening lines. In comparison with ZnO, antimicrobial properties enhanced when incorporated ZnO. addition, experiments absorption edge indicated presence red shift incorporation GO. When quantitative amounts, bandgap value decreased. FTIR spectra exhibit band at 486 cm −1 , which confirms Zn‐O stretching SEM images reveal random pattern structural features surface According EDX spectrum, doped 61%–64% 32%–34% oxygen, respectively. annealed higher temperature, NPs produced more H 2 narrower than before annealing. methyl blue (MB) an example organic compound order investigate potential photocatalytic addition DPPH assays, tested for scavenge free radicals. Comparing these showed increased antioxidant activity. Based zone inhibition (5, 10, 50, 100 mg/mL), antibacterial activity concentration dependent. detailed discussion results demonstrated are toxic different ways depending how long they survive degreased Zebrafish embryos fast decompose. Research Highlights scope manuscript under confirmed exhibited dependent antioxidative Determined 89% orange dye can be degraded photocatalytically. 74.86% 50 g/mL present study. At g/mL, 79.1% Photocatalytic degradation mechanism scheme implicit photoexcited charge carrier transportation path all Survival rate zebrafish shown decrease increasing concentrations plus nanoparticles.
Язык: Английский
Процитировано
1
Biomass Conversion and Biorefinery, Год журнала: 2024, Номер unknown
Опубликована: Окт. 7, 2024
Язык: Английский
Процитировано
1
Biomass Conversion and Biorefinery, Год журнала: 2024, Номер unknown
Опубликована: Июль 23, 2024
Язык: Английский
Процитировано
0
Current Food Science and Technology Reports, Год журнала: 2024, Номер 3(1)
Опубликована: Ноя. 25, 2024
Язык: Английский
Процитировано
0