Characterization and Growth Mechanism of Nickel Nanowires Resulting from Reduction of Nickel Formate in Polyol Medium

Logutenko, O. A.; Titkov, A. I.; Vorobyov, A.M.; Yukhin, Yu. M.; Lyakhov, N. Z.

doi:10.1155/2016/9058686

Cited by 16 publications

(5 citation statements)

References 46 publications

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“…In 2016, Xia and Wen optimized the large-scale synthesis conditions of h-NiNWs and found that the size and morphology of NiNWs can be tailored by adjusting the reaction temperature, time length, and surfactant concentration . Logutenko et al also made a similar observation wherein a decrease in the nickel precursor concentration resulted in a decrease in diameters of the nanowires …”

Section: Introductionmentioning

confidence: 97%

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Printable Hierarchical Nickel Nanowires for Soft Magnetic Applications

2018

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Hierarchical nickel nanowires (h-NiNWs) were synthesized by a simple reduction method and their electrical, magnetic, and electromagnetic characteristics were investigated. These nanowires possess a high magnetic saturation ( M s ) of 51 emu/g and also a coercivity ( H c ) of 34.5 Oe, which makes them suitable for soft magnetic sensor applications. Hall transport is being reported for the first time for h-NiNWs, and electrical conductivity at room temperature was studied to assess their applicability as a Hall sensor wherein the Hall coefficient R H was found to be −1.39 × 10 –12 Ω cm/Oe. Electromagnetic characterization of synthesized h-NiNWs shows excellent microwave shielding effectiveness of above 24 dB for the Ku band (12.4–18 GHz) and a maximum value of 32 dB at 14 GHz for a sample with a thickness of about 1 mm. A room-temperature-curable screen-printable ink was formulated using the synthesized magnetic nanostructures and printed on different flexible substrates. Printed patterns show promising ferromagnetic properties, and they could be potential candidates for soft magnetic sensor applications.

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Section: Introductionmentioning

confidence: 97%

“…44 Logutenko et al also made a similar observation wherein a decrease in the nickel precursor concentration resulted in a decrease in diameters of the nanowires. 45…”

Section: Introductionmentioning

confidence: 99%

Printable Hierarchical Nickel Nanowires for Soft Magnetic Applications

2018

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“…From previous studies, the nanowire form of the nanoparticles is attributed to the crystallite growth controlled by temperature and templating conditions. The pyrolytic condition of the carbon-rich material in the pyrolytic system may be attributed as influencing the aggregation of Ni NPs [ 25 , 26 ]. This is confirmed by the EDX analysis results presented in Table 1 , suggesting an Ni amount of about 31.67 wt.% in Ni/BC.…”

Section: Resultsmentioning

confidence: 99%

Nanocomposite of Nickel Nanoparticles-Impregnated Biochar from Palm Leaves as Highly Active and Magnetic Photocatalyst for Methyl Violet Photocatalytic Oxidation

et al. 2022

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Photocatalysis has been recognized as a feasible method in water and wastewater treatment. Compared to other methods such as adsorption and chemical oxidation, the use of photocatalyst in the advanced oxidation processes gives benefits such as a longer lifetime of the catalyst and less consumable chemicals. Currently, explorations into low-cost, effective photocatalysts for organic contaminated water are being developed. Within this scheme, an easily separated photocatalyst with other functionality, such as high adsorption, is important. In this research, preparation of a magnetic nanocomposite photocatalyst based on agricultural waste, palm leaves biochar impregnated nickel nanoparticles (Ni/BC), was investigated. The nanocomposite was prepared by direct pyrolysis of palm leaves impregnated with nickel (II) chloride precursor. Furthermore, the physicochemical characterization of the material was performed by using an X-ray diffractometer (XRD), scanning electron microscopy-energy dispersive X-ray fluorescence (SEM-EDX), transmission electron microscopy (TEM), gas sorption analysis, X-ray photoelectron spectroscopy (XPS) and vibrating sample magnetometer (VSM). The photocatalytic activity of Ni/BC was evaluated for methyl violet (MV) photocatalytic oxidation. The results from XRD, XPS and TEM analyses identified single nickel nanoparticles dispersed on the biochar structure ranging from 30–50 nm in size. The dispersed nickel nanoparticles increased the BET specific surface area of biochar from 3.92 m2/g to 74.12 m2/g oxidation. High photocatalytic activity of the Ni/BC was exhibited by complete MV removal in 30 min for the concentration ranging from 10–80 mg/L. In addition, the Ni/BC showed stability in the pH range of 4–10 and reusability without any activity change until fifth usage. The separable photocatalyst is related to magnetism of about 13.7 emu/g. The results highlighted the role of biochar as effective support for Ni as photoactive material.

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“…In addition, the PVP additive concurrently acts as the structure‐directing agent, protective agent, and stabilizer, and the O and N atoms in it can provide lone electron pairs to Ni 2+ , which further forms a coordination complex and reducing the concentration of free Ni 2+ . [ 11 ] During the whole reaction process, the external magnetic field acts as a key factor for inducing the formation of nanowires, which promotes the directional growth of the nascent nickel nuclei along the direction of the magnetic field ( Figure a).…”

Section: Resultsmentioning

confidence: 99%

Magnetic Field‐Induced Synthesis of One‐Dimensional Nickel Nanowires for Enhanced Microwave Absorption

Meng

Liu

Wang

et al. 2022

Adv Materials Inter

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One‐dimensional magnetic nanowires have become one of the ideal candidates for microwave absorption (MA) due to their excellent mechanical properties, large aspect ratio, and excellent electron transport properties. Here, we introduce the synthesis of polyvinylpyrrolidone (PVP)‐directed nickel nanowires (PNNWs) by an externally magnetically induced solvothermal method, and the morphology and properties of PNNWs exhibit a magnetic field‐strength‐dependent relationship. The 9T‐PNNW synthesized at 9 T magnetic field has the characteristics of high aspect ratio, large specific surface area, and good magnetic properties, which endow it with excellent MA performance. The minimum reflection loss (RL) reaches −29.82 dB at 4.08 GHz with the thickness of 4.5 mm and the effective absorption bandwidth (fe) can over 3.6 GHz from 14.4 GHz to 18.0 GHz with a thickness of 1.5 mm. Multiple electromagnetic loss mechanisms are induced to attenuate the electromagnetic wave (EW), in which the dielectric loss dominates, and the magnetic loss, current loss, and resonance effect only play an auxiliary role. This work opens up a new avenue for rational design and preparation of nickel nanowires, and more importantly, the regulation of the magnetic field on the performance of absorbers has reference significance.

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Characterization and Growth Mechanism of Nickel Nanowires Resulting from Reduction of Nickel Formate in Polyol Medium

Cited by 16 publications

References 46 publications

Printable Hierarchical Nickel Nanowires for Soft Magnetic Applications

Printable Hierarchical Nickel Nanowires for Soft Magnetic Applications

Nanocomposite of Nickel Nanoparticles-Impregnated Biochar from Palm Leaves as Highly Active and Magnetic Photocatalyst for Methyl Violet Photocatalytic Oxidation

Magnetic Field‐Induced Synthesis of One‐Dimensional Nickel Nanowires for Enhanced Microwave Absorption

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