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Nickel nanoparticles
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In this work, we have shown that the addition of Zn to nanocrystalline nickel ferrite enhanced its H2 sensing properties, such as sensitivity, response time, and stability. This is explained due to the formation of defects and oxygen vacancies in the crystal structure due to the substitution of Zn ions in place of Ni ions. These defects generated more active sites for H2 gas to interact with, resulting in improved sensing performance.
9p
viambani
18-06-2024
1
1
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Photocatalytic degradation proficiency was studied for bromothymol blue dye. Phytochemicals-coated Nickel Oxide nanoparticles demonstrated antibacterial properties against bacteria (gram negative strain of E. coli, Pseudomonas spp. and gram positive strain of Bacillus spp.) by showing highest zone of inhibition (19 mm, 22 mm, 15 mm).the antioxidant activity of the synthesized nanoparticles were also examined and the result show that the fabricated nanoparticles exhibited significant radical scavenging activity.
10p
dianmotminh02
03-05-2024
5
2
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In this work, we present the recent study in the microwave absorption performances of the Cu0.5Ni0.5Fe2O4@polyaniline (CNF@PANI). This material has been synthesized by polymerization and hydrothermal reaction process. The PANI fiber structure with the whole cover of CNF nanoparticles could establish the improvement of microwave absorption performances.
9p
viengels
25-08-2023
4
3
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The CuO and NiO nanoflakes were synthesized by a hydrothermal reaction. The secondary nucleation and growth of hydroxides resulted in the formation of flake like architectures as the prepared nanoparticles were used as an adsorbent for malachite green oxalate (MGO) and methyl orange (MO).
9p
viberbers
09-08-2023
9
3
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Supported catalysts are of great interest because of their wide range of application possibilities. In this study, firstly silica spheres were synthesized and then platinum and nickel nanoparticles were incorporated on this silica by microwave irradiation, which is an efficient technique for catalyst preparation. Synthesized silica spheres and catalysts were characterized by BET, X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, and transmission electron microscopy techniques.
8p
langthannam
29-12-2021
8
0
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A three-dimensional reduced graphene oxide/nickel-cobalt sulfide (RGO/NiCo2S4) aerogel was fabricated by an efficient and facile one-step hydrothermal approach. The NiCo2S4 needle-like structure consisted of many small nanoparticles well attached to the surface of the RGO sheet. The prepared aerogel had high porosity and conductivity.
9p
meyerowitz
25-12-2021
9
0
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The results suggest that the improved NP characteristics on a steel mesh substrate, including multi- and mixed metal oxides, can display photocatalytic antibacterial activity against E. coli along with minimization of NP exposure due to NP immobilization.
8p
meyerowitz
25-12-2021
8
0
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Resins coated with nickel/nickel boride nanoparticles were used to remove brilliant green, methyl violet, methylene blue, phenosafranine, and brilliant cresyl blue from water. The effects of pH, adsorbent dose, contact time, and initial dye concentration on the adsorption efficiencies were investigated. The point of zero charge for the adsorbent was pH 9.5. Isotherm studies were conducted using Langmuir, Freundlich, and Dubinin–Radushkevich models, and thermodynamic studies were also performed. Adsorption of the five dyes was found to obey the Langmuir isotherm model and was endothermic.
15p
tudichquannguyet
29-11-2021
25
1
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Nickel ferrite magnetic nanoparticles (NiFe2O4MNPs) were prepared via the autocombustion assisted solgel method. The efficient catalyst was investigated by FT-IR, XRD, ICP, SEM, and TEM techniques. A one-pot, three-component reaction is reported for the synthesis of substituted 4H -chromenes in the presence of NiFe2O4 MNPs as a reusable catalyst in a green solvent at 40◦C under clean, efficient, and mild conditions. Furthermore, selected products were characterized by FT-IR, 1H NMR, and 13C NMR. The single-crystal X-ray analysis of product 4u was also conclusively confirmed.
16p
tudichquannguyet
29-11-2021
15
1
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Nickel catalysts supported on γ-Al2 O3 were synthesized in the presence of polyvinylpyrrolidone (PVP) using both alkaline polyol method and hydrazine reduction method while fixing the weight ratio of [(PVP)]/[Ni(CH3COO)2·4H2O] at 2. The effects of hydrazine [N2H5OH]/[Ni] and [NaOH]/[Ni] molar ratios on the structural properties of the catalysts were characterized by transmission electron microscopy (HRTEM) and by X-ray diffraction (XRD). The average of monodispersed Ni nanoparticles ranged between 8.0 and 13.0 nm.
19p
tudichquannguyet
29-11-2021
11
2
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In this work, metal nanoparticles were successfully synthesized through the reduction of metal salts using reducing agents such as: ethylene glycol (EG) and sodium borohydride (NaBH4). These metal nanoparticles were impregnated into the supports M-X (M = Ni, Pd; X = Bent, C, Zeolite, and Al2O3) in high yield. The physio-chemical properties of these catalysts were characterized by various techniques such as UV-Vis spectroscopy, powder X-ray diffraction (PXRD), Transmission electron microscopy (TEM) and the specific surface area of M-X was evaluated by N2 adsorption isotherm analysis at 77 K.
6p
cothumenhmong11
06-05-2021
6
2
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In the present work, Nickel oxide nanoparticles (NiO NPs) were synthesized using leaves extract of C. gigantea through a solution combustion method. The NiO NPs were characterized through analytical techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FT-IR).
8p
tamynhan4
06-09-2020
15
1
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Nickel nanoparticles were successfully synthesized by a bipolar electrolyser. The obtained Ni nanoparticles were significantly reduced and distributed homogeneous comparing to the particles synthesized by a conventional DC electrolyser.
8p
vimoskva2711
02-01-2020
10
1
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Polyaniline–NiFe2O4 nanocomposites (PANI–NiFe2O4) with different contents of NiFe2O4 (2.5, 5 and 50 wt%) were prepared via in situ chemical oxidation polymerization, while the nanoparticles nickel ferrite were synthesized by sol–gel method. The prepared samples were characterized using some techniques such as Fourier transforms infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). Moreover, the electrical conductivity and optical properties of the nanocomposites were investigated. Pure (PANI) and the composites containing 2.
8p
trinhthamhodang1
16-11-2019
18
1
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Synthesis of NiSn alloy nanoparticle-incorporated carbon nanofibers was performed by calcining electrospun mats composed of nickel acetate, tin chloride and poly(vinyl alcohol) under vacuum. The electrochemical measurements indicated that utilization of tin as a co-catalyst could strongly enhance the electrocatalytic activity if its content and calcination temperature were optimized.
11p
trinhthamhodang1
14-11-2019
14
2
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In the present article, we report the biosensor can detect superparamagnetic nanoparticles (less than 10 nm in size) at various and low particle concentrations, which is of the importance role in biosensing applications. The nanoparticle ferrite (Fe3O4), Cobalt ferrite (CoFe2O4), Nickel ferrite (NiFe2O4) nanoparticles were synthesized by the high temperature thermal decomposition precursor method.
6p
truongtien_09
08-04-2018
28
3
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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Synergistic Effect of Functionalized Nickel Nanoparticles and Quercetin on Inhibition of the SMMC-7721 Cells Proliferation
8p
dauphong17
21-02-2012
39
2
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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Template-Assisted Synthesis and Characterization of Passivated Nickel Nanoparticles
9p
sting07
17-02-2012
40
2
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