One-step synthesis of pure γ-FeNi alloy by reaсtive sol–gel combustion route: mechanism and properties

Yermekova, Zhanna; Roslyakov, Sergey; Kovalev, D. Yu.; Danghyan, V.; Mukasyan, Alexander S.

doi:10.1007/s10971-020-05252-9

Cited by 21 publications

(15 citation statements)

References 51 publications

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“…Measured BET specific surface areas ( A ) of the NPs were 8.33 m 2 /g (Co), 22.93 m 2 /g (Co 3 Ni), 14.86 m 2 /g (CoNi), 10.53 m 2 /g (CoNi 3 ), and 1.01 m 2 /g (Ni). These BET areas are typical for NMs prepared by the SCS approach 36 , 43 .…”

Section: Resultsmentioning

confidence: 81%

“…Due to this feature, combustion of SCS precursors occurs even in inert atmospheres and in vacuum and result in high-quality NMs with homogeneous crystal phases. The method has previously been used to produce NMs of different functional classes, including pure and multicomponent metal NMs 33 – 36 , as well as simple and complex oxides 37 – 39 . Since SCS is one of few techniques that could easily be scaled-up for industrial production of a broad class of NMs, it is important to study particle properties as well as corrosion and dissolution characteristics of SCS NPs in e.g.…”

Section: Introductionmentioning

confidence: 99%

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Corrosion and transformation of solution combustion synthesized Co, Ni and CoNi nanoparticles in synthetic freshwater with and without natural organic matter

Khort

Hedberg

Mei

et al. 2021

Sci Rep

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Pure metallic Co, Ni, and their bimetallic compositions of Co3Ni, CoNi, and CoNi3 nanomaterials were prepared by solution combustion synthesis. Microstructure, phase composition, and crystalline structure of these nanoparticles (NPs) were characterized along with studies of their corrosion and dissolution properties in synthetic freshwater with and without natural organic matter (NOM). The nanomaterials consisted of aggregates of fine NPs (3–30 nm) of almost pure metallic and bimetallic crystal phases with a thin surface oxide covered by a thin carbon shell. The nanomaterials were characterized by BET surface areas ranging from ~ 1 to 8 m2/g for the Ni and Co NPs, to 22.93 m2/g, 14.86 m2/g, and 10.53 m2/g for the Co3Ni, CoNi, CoNi3 NPs, respectively. More Co and Ni were released from the bimetallic NPs compared with the pure metals although their corrosion current densities were lower. In contrast to findings for the pure metal NPs, the presence of NOM increased the release of Co and Ni from the bimetallic NPs in freshwater compared to freshwater only even though its presence reduced the corrosion rate (current density). It was shown that the properties of the bimetallic nanomaterials were influenced by multiple factors such as their composition, including carbon shell, type of surface oxides, and the entropy of mixing.

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Section: Resultsmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Corrosion and transformation of solution combustion synthesized Co, Ni and CoNi nanoparticles in synthetic freshwater with and without natural organic matter

Khort

Hedberg

Mei

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Measured BET specific surface areas (A) of the NPs were 8.33 m 2 /g (Co), 22.93 m 2 /g (Co3Ni), 14.86 m 2 /g (CoNi), 10.53 m 2 /g (CoNi3), and 1.01 m 2 /g (Ni). These BET areas are typical for NMs prepared by the SCS approach37,44 .…”

mentioning

confidence: 78%

“…Typical XRD patterns and calculated crystalline cell parameters (a, V) of the NPs are shown in Fig 3 and The possibility to obtain bimetallic single-phase metallic alloys using the SCS approach has previously been shown by some of the authors 37,45,46 . Calculated values of crystalline sizes (d) of the NPs,…”

Section: Xrdmentioning

confidence: 90%

“…Due to this feature, combustion of SCS precursors occurs even in inert atmospheres and in vacuum and result in high-quality NMs with homogeneous crystal phases. The method has previously been used to produce NMs of different functional classes, including pure and multicomponent metal NMs [34][35][36][37] , as well as simple and complex oxides [38][39][40] . Since SCS is one of few techniques that could easily be scaled-up for industrial production of a broad class of NMs, it is important to study particle properties as well as corrosion and dissolution characteristics of SCS NPs in e.g.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Corrosion and Transformation of Solution Combustion Synthesized Co, Ni and CoNi Nanoparticles in Synthetic Freshwater with and without Natural Organic Matter

Khort

Hedberg

Mei

et al. 2020

Preprint

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Pure metallic Co, Ni, and their bimetallic compositions of Co3Ni, CoNi, and CoNi3 nanomaterials were prepared by solution combustion synthesis. Microstructure, phase composition, and crystalline structure of these nanoparticles (NPs) were characterized along with studies of their corrosion and dissolution properties in synthetic freshwater with and without natural organic matter (NOM). The nanomaterials consisted of aggregates of fine NPs (3–30 nm) of almost pure metallic and bimetallic crystal phases with thin surface oxide covered by a thin carbon shell. The nanomaterials were characterized by BET surface areas ranging from ~ 1 to 8 m2/g for the Ni and Co NPs, to 22.93 m2/g, 14.86 m2/g, and 10.53 m2/g for the Co3Ni, CoNi, CoNi3 NPs, respectively. More Co and Ni were released from the bimetallic NPs compared with the pure metals although their corrosion current densities were lower. In contrast to findings for the pure metal NPs, the presence of NOM increased the release of Co and Ni from the bimetallic NPs in freshwater compared to freshwater only even though its presence reduced the corrosion rate (current density). It was shown that the properties of the bimetallic nanomaterials were influenced by multiple factors such as their composition, including carbon shell, type of surface oxides, and the entropy of mixing.

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Mössbauer and magnetic studies on nanocrystalline FeNi particles prepared by thermal reduction

Švábenská,

Roupcová,

Havlíček

et al. 2024

J Radioanal Nucl Chem

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One-step synthesis of pure γ-FeNi alloy by reaсtive sol–gel combustion route: mechanism and properties

Cited by 21 publications

References 51 publications

Corrosion and transformation of solution combustion synthesized Co, Ni and CoNi nanoparticles in synthetic freshwater with and without natural organic matter

Corrosion and transformation of solution combustion synthesized Co, Ni and CoNi nanoparticles in synthetic freshwater with and without natural organic matter

Corrosion and Transformation of Solution Combustion Synthesized Co, Ni and CoNi Nanoparticles in Synthetic Freshwater with and without Natural Organic Matter

Mössbauer and magnetic studies on nanocrystalline FeNi particles prepared by thermal reduction

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