Hydrothermal synthesis and crystal structure of pyrite

Wu, Rong; Zheng, Yangong; Zhang, X.G.; Sun, Yingjuan; Xu, Jingxian; Jian, J.K.

doi:10.1016/j.jcrysgro.2004.02.020

Cited by 68 publications

(48 citation statements)

References 13 publications

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“…From Table 1, it can also be observed that two sulphurcontaining chemicals have always been preferred as the S sources to synthesize iron pyrite. One is elemental sulphur and the other is Na 2 S 2 O 3 or Na 2 S. Wu et al, 28 Feng et al, 29 Zhang et al 30 and Xia et al 38 used Na 2 S 2 O 3 and elemental sulphur as the S precursors to synthesize iron pyrite at hydrothermal conditions. The iron pyrite samples they obtained contained irregular particles or aggregation of polyhedrons.…”

Section: Hydrothermal Synthesismentioning

confidence: 99%

Morphology controllable syntheses of micro- and nano-iron pyrite mono- and poly-crystals: a review

Huang

Zhu

2016

RSC Adv.

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Synthesis of iron pyrite with defined morphology has long been actively pursued, due to the strong size and shape dependence of their chemical and physical properties. This review provides comprehensive information outlining current knowledge regarding the morphology controllable syntheses of micro-and nano-iron pyrite mono-and poly-crystals. The wet-chemical methods are summarized as the controllable syntheses, including the hydrothermal, solvothermal, hot-injection and heating-up methods, sulphidation and methods with other relatively high efficiencies. The present study reveals the discussion of relationship between the morphologies and major controlling factors, the temperature, precursor chemicals, solvents and surfactants. The existing challenges for future fine tuning of iron pyrite facets are also proposed for improving the performance of iron pyrite based materials.

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Section: Hydrothermal Synthesismentioning

confidence: 99%

Morphology controllable syntheses of micro- and nano-iron pyrite mono- and poly-crystals: a review

Huang

Zhu

2016

RSC Adv.

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“…Iron disulfide (FeS 2 ) is an attractive anode material for lithium ion batteries because of its interesting characteristics such as high theoretic capacity (890 mAh g -1 ), low environmental impact and affordable cost [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. However, the capacities of FeS 2 electrodes often reduce very quickly during charge-discharge cycling, especially at high current densities.…”

Section: Introductionmentioning

confidence: 99%

Enhanced electrochemical performance of FeS2 synthesized by hydrothermal method for lithium ion batteries

Zhang

Wang

et al. 2012

J Appl Electrochem

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Iron disulfide (FeS 2 ) powders were successfully synthesized by hydrothermal method. Cetyltrimethylammonium bromide (CTAB) had a great influence on the morphology, particle size, and electrochemical performance of the FeS 2 powders. The as-synthesized FeS 2 particles with CTAB had diameters of 2-4 lm and showed a sphere-like structure with sawtooth, while the counterpart prepared without CTAB exhibited irregular morphology with diameters in the range of 0.1-0.4 lm. As anode materials for Li-ion batteries, their electrochemical performances were investigated by galvanostatic charge-discharge test and electrochemical impedance spectrum. The FeS 2 powder synthesized with CTAB can sustain 459 and 413 mAh g -1 at 89 and 445 mA g -1 after 35 cycles, respectively, much higher than those prepared without CTAB (411 and 316 mAh g -1 ). The enhanced rate capability and cycling stability were attributed to the less-hindered surface layer and better electrical contact from the sawtooth-like surface and micro-sized sphere morphology, which led to enhanced process kinetics.

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“…To date, various routes for microand nano-structures of transition metal dichalcogenides materials synthesis had been well documented in the literatures. However, compared with the studies on other metal chalcogenides, efforts towards the synthesis and characterization of FeS 2 have been lagged far behind significantly due to their complex crystals structure and physical properties [10][11][12][13][14][15]. Most research depended heavily on single source precursors (SSPs) as the starting material because of the limitations with available synthetic routes.…”

Section: Introductionmentioning

confidence: 99%

Controlled growth of uniform nanoflakes-built pyrite FeS2 microspheres and their electrochemical properties

Wang

et al. 2010

Ionics

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Nanoflakes-built pyrite FeS 2 microspheres were synthesized through a simple solvothermal process in mixed solvents of N, N-dimethytformamide and ethylene glycol without using any surfactant. Both the composition of the solvents and urea were key factors for the formation of the uniform products. It was found that the flake-like intermediate products transformed into FeS 2 nanoflakes in situ in the early stage and Ostwald ripening growth mechanism would contribute to the uniformity of the final products. Electrochemical studies revealed that the nanoflakes-built pyrite FeS 2 microspheres exhibited large lithium storage capacities. This method can be easily controlled and is expected to be extendable to the fabrication of other metal chalcogenides with controlled shape and structure.

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Hydrothermal synthesis and crystal structure of pyrite

Cited by 68 publications

References 13 publications

Morphology controllable syntheses of micro- and nano-iron pyrite mono- and poly-crystals: a review

Morphology controllable syntheses of micro- and nano-iron pyrite mono- and poly-crystals: a review

Enhanced electrochemical performance of FeS2 synthesized by hydrothermal method for lithium ion batteries

Controlled growth of uniform nanoflakes-built pyrite FeS2 microspheres and their electrochemical properties

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