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Nickel oxide
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Nowadays, supercapacitors have been among popular electrochemical energy storage devices in modern life. Plenty of active materials have been investigated and developed to meet the increasing demands for high-performance supercapacitors. In this study, we introduce a facile chemical synthesis route in combination with a subsequent calcination process to fabricate the oxide/hydroxide composites of nickel (Ni) and copper (Cu) as active materials for highperformance asymmetric supercapacitors.
9p
dianmotminh02
03-05-2024
3
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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Luận văn "Nghiên cứu tổng hợp vật liệu composite ferrite/graphene oxide dạng khử và ứng dụng" được hoàn thành với mục tiêu nhằm tổng hợp được vật liệu composite trên cơ sở nickel ferrite và các vật liệu graphene: graphene oxide dạng khử, graphene oxide pha tạp có hoạt tính cảm biến điện hóa và quang xúc tác tốt.
192p
khanhchi0912
12-04-2024
10
1
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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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The high capacity electrode material design with rapid charging/discharging and long life capability has become a critical issue and main concern in recent years. Nickel oxide (NiO) has received much attention in the field of energy storage as a cathode electrode material owing to its layered structure with large spacing, crystal structure, and high specific surface area.
10p
viberbers
09-08-2023
4
3
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In this paper, we present an experimental study on electroless nickel plating for applications in microbolometers. The study starts from an optimization of the electroless plating bath for depositing nickel on aluminum surface and ends up at the controlled growth of nickel micropillars on selected areas with the masking layer patterned by a conventional optical lithography process.
7p
viberbers
09-08-2023
7
4
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The NiO thin films were prepared by the electron beam evaporation method using synthesized sintered targets. As-prepared films were characterized using X-ray diffraction, scanning electron microscopy, UVeVIS spectroscopy and cyclic voltammetry. The thicker films were found to exhibit a well-defined structure and a well-developed crystallite size with greater transmittance modulation and durability.
8p
viberbers
09-08-2023
5
3
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In this work, NaNi0.5Ti0.5O2 cathode materials of sodium ion batteries were synthesized by a pre-milling combined with solid-state reaction method using sodium hydroxide (NaOH), nickel (II) acetate (2(CH3COO)Ni.4H2O), and titanium dioxide (TiO2) as the precursors.
8p
viberkshire
09-08-2023
6
4
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The purpose of this study was to examine whether the administration of nickel (Ni) was associated with cell apoptosis and also to evaluate whether post acute oral exposure to hyperoside would cause histopathologic alterations in rats. Four groups of male SpragueDawley rats (n = 7) used in this study were as follows: a control group and groups treated with Ni (as NiCI2, 13 mg/kg), hyperoside (Hyp) (50 mg/kg), and Ni + Hyp.
10p
dolomite36
30-12-2021
6
0
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The power density of direct methanol fuel cells (DMFCs) can be changed by using different anode materials. Especially porous materials are preferred for the anode. In the present study, multiwall carbon nanotubes were first injected into graphite. Then, by depositing nickel, a catalyst was prepared for use as the anode material of the DMFC. This catalyst was named Ni@MWNTs. The oxidation of methanol and some kinetic parameters were investigated in KOH solution.
11p
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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The supercapacitance performance of the PGNC nanocomposite is reported for different electrolytes, different stoichiometric ratios of Ni and Co in NixCo1- xFe2O4 and on different substrates.
11p
meyerowitz
25-12-2021
9
0
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Nano-NiO catalyzed acylation of mixed (methyl)(aryl)zincs with aromatic acyl halides in THF at room temperature provides a new facile route for aryl–aroyl coupling. Among NiCl2.L2 and NiCl2.L (L = monodentate and bidentate phosphine ligand) catalysts, the lower catalyst loading of NiCl2 (dppf) may seem attractive; however, nano-NiO, being the lowest cost catalyst, is more favorable for aroylation of (methyl)(aryl)zincs. This procedure also provides a supplement to Cu and Pd catalyzed acylation of diorganozincs.
9p
tudichquannguyet
29-11-2021
9
1
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3,4-Dihydroxy-L-phenylalanine and ethylenedioxythiophene were chemically copolymerized via an oxidative process in aqueous solution. The copolymer was used as a novel mussel-inspired electroactive binder in conjunction with a nickel-based metal organic frame work for fabrication of environmentally friendly supercapacitors.
13p
tudichquannguyet
29-11-2021
7
1
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The results of cyclic voltammetry and chronoamperometry showed that the electrocatalytic activity and stability of Ni(II)/CSs were higher than that of unloaded NiAc under alkaline environment. When the nickel content was 5 wt.%, the peak oxidation current density of methanol on Ni(II)/CSs electrocatalyst reached the maximum of 34.54 mA/cm2 , which was about 1.8 times that of unloaded NiAc. These results indicate that Ni(II)/CSs has potential applications in the electrocatalytic oxidation of methanol.
13p
tudichquannguyet
29-11-2021
3
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
10
1
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Potentially active and eco-friendly solid acid catalysts have been synthesized by loading different weight percentages (10, 15, and 50) of nickel oxide on thermally activated Turkish perlite through the deposition-precipitation method. Structural features of prepared catalysts were analyzed using BET surface area analysis, X-ray diffraction, scanning electron microscope (SEM), SEM-EDX, transmission electron microscopy (TEM), Fourier-transform infrared (FT-IR), pyridine adsorbed FT-IR, UV-Vis diffuse reflectance spectroscopy (DRS), and thermogravimetric analysis (TGA) techniques.
18p
tudichquannguyet
29-11-2021
9
0
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Mục tiêu của nghiên cứu này nhằm sử dụng các phương pháp hóa học tính toán để nghiên cứu phản ứng hydrogen hóa CO2 trên các hệ xúc tác trên cơ sở nickel; xây dựng các đường phản ứng, dự đoán đường phản ứng ưu tiên; so sánh và đánh giá khả năng xúc tác của các hệ vật liệu trên cơ sở nickel; làm rõ vai trò của chất mang. Mời các bạn cùng tham khảo.
177p
cucngoainhan2
02-11-2021
19
5
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Mục đích nghiên cứu của Luận án nhằm sử dụng các phương pháp hóa học tính toán để nghiên cứu phản ứng hydrogen hóa CO2 trên các hệ xúc tác trên cơ sở nickel; xây dựng các đường phản ứng, dự đoán đường phản ứng ưu tiên; so sánh và đánh giá khả năng xúc tác của các hệ vật liệu trên cơ sở nickel. Mời các bạn cùng tham khảo!
27p
thebadguys
08-06-2021
14
3
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