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Nickel ferrite
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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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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
11
1
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This practice covers procedures and definitions for estimating ferrite content in certain grades of austenitic ironchromium-nickel alloy castings that have compositions balanced to create the formation of ferrite as a second phase in amounts controlled to be within specified limits. Methods are described for estimating ferrite content by chemical, magnetic, and metallographic means.
7p
hth_hn_vn
10-12-2023
5
4
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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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In this study, we have synthesized rhombohedron e like nickel ferrite nanostructure by a rapid microwave assisted combustion method using ethylenediamminetetraacetic acid as a chelating agent.
4p
viberbers
09-08-2023
5
3
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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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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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Bài viết trình bày quá trình tổng hợp vật liệu có cấu trúc spinen nickel ferrite được tổng hợp bằng phương pháp thủy nhiệt, sử dụng các muối FeSO4.7H2O, Ni(NO3)2.6H2O và glucose như là các tiền chất ban đầu.
10p
vijichoo2711
30-05-2021
21
1
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We report an environmentally friendly synthetic strategy to synthesize new nickel ferrite and Mg doped nickel ferrite photocatalysts under modified green sol-gel route in which Aloe Vera gel acts as a natural template. The crystalline phase, surface morphology and size of the prepared photocatalysts were characterized by PXRD, SEM, TEM and HRTEM analysis.
12p
tamynhan4
06-09-2020
8
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
17
0
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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
27
2
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Báo cáo " The effect of cobalt substitution on structure and magnetic properties of nickel ferrite "
A series of cobalt doped nickel ferrite with composition of Ni1-XCoXFe2O4 with x ranges from 0.0 to 0.8 (in steps of 0.2) was prepared by using co-precipitation method and subsequently sintered, annealed at 6000C for 3h. The influence of the Co content on the crystal lattice parameter, the stretching vibration and the magnetization of specimens were subsequently studied. XRD and FTIR were used to investigate structure and composition variations of the samples. All samples were found to have a cubic spinel structure. ...
7p
tuanlocmuido
19-12-2012
43
2
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