Fabrication and characterization of nanostructured Fe3S4, an isostructural compound of half-metallic Fe3O4

Li, Peng; Xia, Chuan; Zhang, Qiang; Zhong, Guo; Cui, W. Y.; Bai, Haili; Alshareef, Husam N.; Zhang, Xi Xiang

doi:10.1063/1.4922578

Cited by 16 publications

(18 citation statements)

References 31 publications

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“…We further measured the magnetic field dependence of magnetization ( M ‐ H ) curves of pristine CoSe 2 and Ni 0.33 Co 0.67 Se 2 solid solution at room temperature to verify the incorporation of heterogeneous spin state, namely Ni, into CoSe 2 lattice. As shown in Figure C, the pure CoSe 2 shows negligible ferromagnetic feature by the fact that the M ‐ H hysteresis loop inconspicuous, whereas that of Ni 0.33 Co 0.67 Se 2 is obvious . Moreover, the coercivity of Ni 0.33 Co 0.67 Se 2 is about sixfold higher than that of CoSe 2 (inset of Figure C).…”

Section: Resultsmentioning

confidence: 91%

Active Edge Sites Engineering in Nickel Cobalt Selenide Solid Solutions for Highly Efficient Hydrogen Evolution

Xia

Liang

Zhu

et al. 2017

Advanced Energy Materials

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181

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An effective multifaceted strategy is demonstrated to increase active edge site concentration in Ni0.33Co0.67Se2 solid solutions prepared by in situ selenization process of nickel cobalt precursor. The simultaneous control of surface, phase, and morphology result in as‐prepared ternary solid solution with extremely high electrochemically active surface area (Cdl = 197 mF cm−2), suggesting significant exposure of active sites in this ternary compound. Coupled with metallic‐like electrical conductivity and lower free energy for atomic hydrogen adsorption in Ni0.33Co0.67Se2, identified by temperature‐dependent conductivities and density functional theory calculations, the authors have achieved unprecedented fast hydrogen evolution kinetics, approaching that of Pt. Specifically, the Ni0.33Co0.67Se2 solid solutions show a low overpotential of 65 mV at −10 mV cm−2, with onset potential of mere 18 mV, an impressive small Tafel slope of 35 mV dec−1, and a large exchange current density of 184 µA cm−2 in acidic electrolyte. Further, it is shown that the as‐prepared Ni0.33Co0.67Se2 solid solution not only works very well in acidic electrolyte but also delivers exceptional hydrogen evolution reaction (HER) performance in alkaline media. The outstanding HER performance makes this solid solution a promising candidate for mass hydrogen production.

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Section: Resultsmentioning

confidence: 91%

Active Edge Sites Engineering in Nickel Cobalt Selenide Solid Solutions for Highly Efficient Hydrogen Evolution

Xia

Liang

Zhu

et al. 2017

Advanced Energy Materials

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181

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“…In addition, the metastable nature of Fe 3 S 4 favors its decomposition into Fe 1– x S or FeS 2 upon thermal treatment. Despite these difficulties, several synthesis strategies for Fe 3 S 4 were reported including the decomposition of the single source precursor Fe(Ddtc) 3 in organic solvents,, the synthesis in ionic liquids at low reaction temperatures as well as in hydrothermal synthesis, respectively , . Very recently, the reaction pathways of iron‐sulfide mineral formation under various conditions was studied by in situ X‐ray diffraction…”

Section: Introductionmentioning

confidence: 99%

Sulfidation of Magnetite Nanoparticles – Following the Polysulfide Pathway

2019

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The in-situ sulfidation of sub-10 nm sized Fe 3 O 4 and partial-substituted Co x Fe 3-x O 4 (x = 0.25-0.75) nanoparticles by hot-injection of sulfur dissolved in oleylamine (OA) is strongly time-and temperature dependent. Fe 3 O 4 nanoparticles are completely converted within 5 minutes into Fe 3 S 4 nanoparticles with preservation of the spinel structure at 250°C, whereas higher reaction temperatures and prolonged reaction times re- [a]

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“…Aligned cubic phase FeS 2– x nanowires can be formed using iron nitrate (Fe(NO 3 ) 3 ·9H 2 O) and sodium sulfide (Na 2 S), and different nanocrystalline iron sulfides can be produced by reacting FeSO 4 ·7H 2 O with Na 2 S 3 in toluene simply by changing the reaction temperature and time . High-purity spinel Fe 3 S 4 SINPs can be synthesized by dissolving l -cysteine in water and then adding FeSO 4 …”

Section: Engineered Sinp Synthesismentioning

confidence: 99%

“…156 High-purity spinel Fe 3 S 4 SINPs can be synthesized by dissolving L-cysteine in water and then adding FeSO 4 . 157 Mechanical Milling and Alloying. Physical formation of nanosized particulate powder by high-energy milling is referred to as mechanical milling, whereas the milling of a mixture of different metals and compounds has been termed mechanical alloying.…”

Section: ■ Engineered Sinp Synthesismentioning

confidence: 99%

Nature-Inspired and Sustainable Synthesis of Sulfur-Bearing Fe-Rich Nanoparticles

O’Connor

Hou

Liu

et al. 2020

ACS Sustainable Chem. Eng.

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Sulfur-bearing Fe-rich nanoparticles (SINPs) have been subject to increased levels of interest because of their catalytic properties and other features. However, with increasing interest in greener and sustainable practice, traditional engineered routes to SINP synthesis have become a concern owing to their high energy and resource demand as well as the use of potentially hazardous or environmentally harmful reagents. Here, we aim to bring attention to emerging and burgeoning research across a wide range of disciplines on the formation of both naturally occurring and synthetic SINPs. First, various SINP types are described, and their most important characteristics are outlined. Second, the natural mechanisms of SINP formation are evaluated and their environmental significance explained, predominantly in hydrothermal vents and lithogenic environments, in order to help inspire new approaches to engineered synthesis. Third, an appraisal of various synthetic approaches for SINP assembly is presented, with a focus on green synthesis methods. One exemplar is the use of nature inspired biosynthesis, which has been increasingly explored for the fabrication of cost-effective and environmentally friendlier SINPs. Finally, potential future research directions leading to more sustainable SINP synthesis are put forward.

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Fabrication and characterization of nanostructured Fe3S4, an isostructural compound of half-metallic Fe3O4

Cited by 16 publications

References 31 publications

Active Edge Sites Engineering in Nickel Cobalt Selenide Solid Solutions for Highly Efficient Hydrogen Evolution

Active Edge Sites Engineering in Nickel Cobalt Selenide Solid Solutions for Highly Efficient Hydrogen Evolution

Sulfidation of Magnetite Nanoparticles – Following the Polysulfide Pathway

Nature-Inspired and Sustainable Synthesis of Sulfur-Bearing Fe-Rich Nanoparticles

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