Fe-doped NiO nanopowders for advanced photochemical applications: Synthesis, characterization, photo-assisted dye degradation and latent fingerprint visualization

Physica B Condensed Matter, Journal Year: 2025, Volume and Issue: 701, P. 416991 - 416991

Published: Feb. 1, 2025

Language: Английский

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Nickel Oxide Photocatalyst derived from Leached Spent Ni-Mo Catalyst using Citric Acid Solution

Journal of Physics Conference Series, Journal Year: 2025, Volume and Issue: 2945(1), P. 012021 - 012021

Published: Jan. 1, 2025

Abstract Ni-Mo catalyst has been commercially employed in both petroleum and petrochemical industries. Due to poisoning, this becomes inactive; therefore, it must be recycled properly. In research, the citric acid solution was recover selectively nickel from through an extractive metallurgy mechanism. The leached Ni converted into oxide via combustion method (SCM). leaching analyzed using FTIR. post-combustion powder post-sintered were FTIR, XRD, SEM. Based on SEM-EDX analysis, resulting NiO a sub-micron size high O content. XRD FTIR analyses confirm presence of cubic-structured with dominant Ni-O bond. samples used as Fenton during photodegradation Crystal Violet (CV) under UV-C light irradiation, degradation efficiency 91.6% after 50 minutes 20 ppm CV.

Language: Английский

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Harnessing the Power of S/N Doped NiO Nanoparticles: Bandgap Tuning for Superior Photocatalytic and Antibacterial Performance

Published: April 29, 2025

Nickel oxide (NiO) has gained attention as a promising photocatalyst, thanks to its high efficiency, photochemical stability, cost-effectiveness, and eco-friendly nature. However, wide band gap rapid electron-hole recombination hinder practical application under visible light. This study synthesized pure NiO nanoparticles (NiO-NPs) sulfur/nitrogen co-doped (S/N-NiO-NPs) via the co-precipitation method. Comprehensive structural optical analyses using UV-Vis, FT-IR, XRD, SEM confirmed successful formation of desired materials. Notably, doping with 4% sulfur 6% nitrogen significantly enhanced charge separation, extended light absorption, narrowed from 3.75 eV 2.50 eV, reduced crystalline size 20.49 nm 17.89 nm. Under optimal conditions (pH 10),40 mg S/N-NiO-NPs achieved an impressive 98.9% degradation 5 ppm methylene blue dye within just 60 min sunlight irradiation, far outperforming NiO-NPs. Additionally, antibacterial evaluations demonstrated superior efficacy, exhibiting inhibition zones of13–17 mm against pathogens such Bacillus cereus, Escherichia coli, Salmonella typhi, Staphylococcus aureus, compared 5–10 observed for These results highlight remarkable potential S/N co-doping in transforming into highly efficient, multifunctional material environmental remediation biomedical applications.

Language: Английский

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Sustainable Biogenic Synthesis of High-Performance CaO/NiO Nanocomposite for Antimicrobial, Antioxidant, and Antidiabetic Applications

Ceramics, Journal Year: 2025, Volume and Issue: 8(2), P. 46 - 46

Published: April 29, 2025

Herein, we present in-depth investigations of the biological activities a CaO/NiO nanocomposite synthesized via sustainable eco-friendly approach, utilizing Citrus limonium fruit extract as natural stabilizing and facilitating agent. The efficacy is compared with those individual CaO NiO nanoparticles. X-ray diffraction analysis confirms cubic phase well within unified matrix, demonstrating refined crystallite size 48 nm, which smaller than that FTIR study substantiates occurrence strong Ca-O-Ni-O bonds, along CO32−, C–H, CH2 bonds. CaO, NiO, samples exhibit bandgap values 1.70, 3.46, 3.44 eV, respectively. Surface morphology reveals holds well-defined heterostructure porous morphology. An XPS Ca Ni elements exist in 2+ oxidation state CaO/NiO. exhibits superior antibacterial activity, inhibition zones 24.3 mm against Bacillus subtilis 20.6 Salmonella typhi, MIC 23.4 46.8 µg/mL, It also demonstrates antioxidant potential, IC50 96.8 ± 0.4 µg/mL (DPPH) 91.8 0.1 (superoxide anion). Furthermore, it shows lowest for α-amylase (98.6 0.7 µg/mL) α-glucosidase (81.96 0.5 µg/mL). Consequently, this insightful how biogenic synthesis helps develop high-performance multifunctional nanocomposites biomedical applications.

Language: Английский

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Enhanced photocatalytic performance of Ce-doped NiO nanoparticles synthesized by coprecipitation method

Hybrid Advances, Journal Year: 2024, Volume and Issue: 6, P. 100225 - 100225

Published: June 14, 2024

The objective of the present study was to examine synthesized pure and Ce-doped NiO nanoparticles' photocatalytic activity for degradation water pollutant dye Rhodamine B. Firstly these nanoparticles were using co-precipitation method. X-ray diffraction analysis used evaluate crystallite size confirmed that had a single cubic phase. Additionally, various characterization such as UV-vis spectroscopy, Fourier transform infrared Raman, Scanning electron microscopy, Transmission photoelectron Brunauer-Emmett-Teller done band gap energy, functional group, phase identification, morphology, oxidation states elements surface area nanoparticles. efficiency B found be 85.99% 94.06% respectively. dielectric properties said analyzed, which make will also useful in optoelectronics.

Language: Английский

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Synthesis, optimization, electrochemical and electrochromic properties of Zr-doped NiO films by chemical spray pyrolysis

Electrochimica Acta, Journal Year: 2024, Volume and Issue: 506, P. 145057 - 145057

Published: Sept. 10, 2024

Language: Английский

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Enhancing the Photocatalytic Properties of Nickel Oxide Nanoparticles via Iron Doping: Efficient Degradation of Eosin Yellow Dye

Chemical Physics Impact, Journal Year: 2024, Volume and Issue: unknown, P. 100798 - 100798

Published: Dec. 1, 2024

Language: Английский

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Oxalic Acid-Assisted Photo-Fenton Catalysis Using Magnetic Fe3O4 Nanoparticles for Complete Removal of Textile Dye

ChemEngineering, Journal Year: 2024, Volume and Issue: 8(4), P. 67 - 67

Published: June 28, 2024

Textile industry effluents contain several hazardous substances, such as dye-containing effluents, which pose environmental and aesthetic challenges. Presently, the microbial-based remediation process is in use. This study investigated application of ferrous–ferric oxide (Fe3O4) nanoparticles, a readily formulated nanoadsorbent, to remove scattered dye molecules from industrial effluents. The nanoparticles were prepared using chemical co-precipitation method. had 26.93 emu g−1 magnetization, with sizes smaller than 20 nm, possessed highly purified cubic spinel crystallite structure. catalytic activity iron depended on dose, photocatalytic enhancer, i.e., H2O2 level, pH reaction medium, concentration. We optimized Fenton-like work best 1.0 g/L 60 mM oxalic acid at 7.0, ppm dye. Iron oxides act photocatalysts, generates electron–hole pairs. Consequently, higher amounts super-radicals cause rapid degradation pseudo-first-order reactions. Liquid chromatography–mass spectrometry (LC-MS) analysis revealed decolorized destroyed Disperse Red 277 180 min under visible light. Hence, complete demineralization observed photo-Fenton-like within 3 h These high-capacity, easy-to-separate next-generation adsorption systems are suggested be suitable for industrial-scale Ferrous–ferric increased magnetic properties could utilized clean pollution.

Language: Английский

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Degradation of Methyl Orange from Aqueous Solution Using Fe-Ni-Co-Based Trimetallic Nanocomposites: Optimization by Response Surface Methodology

Sustainability, Journal Year: 2024, Volume and Issue: 16(16), P. 6958 - 6958

Published: Aug. 14, 2024

Effluent-containing dye molecules is a significant environmental hazard. An economical and energy-saving solution needed to combat this issue for the purpose of sustainability. In study, Fe-Ni-Co-based trimetallic nanocomposite was synthesized using coprecipitation method. Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), Fourier Transform Infra-Red spectroscopy were conducted explore physical morphology, phase structure functional groups catalyst. Among dyes, methyl orange considered as major contaminant in textile effluent. The current study focused on degradation nanocomposite. A central composite design response surface methodology employed analyze independent variables including concentration, catalyst dose, temperature, hydrogen peroxide, irradiation time, pH. Dye has been achieved up 81% 20 min at lowest initial concentration (5 mg/L) optimized conditions. Based ANOVA, predicted values great agreement with actual values, signifying applicability photocatalytic decolorization dyeing effluents. results gained from research demonstrated that synthesis method (Iron Triad) cost-effective energy efficient can be scaled higher level industrial application.

Language: Английский

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Synergistic insights: electro-organic photocatalysis and nanostructures

Chemical Papers, Journal Year: 2024, Volume and Issue: 78(15), P. 8077 - 8105

Published: Aug. 22, 2024

Language: Английский

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