Synthesis of Nanocrystalline Cobalt Selenide in Nonaqueous Solvent

Zhan, J. H.; Yang, Xiaogang; Li, S. D.; Yu, Wenxin; Qian, Yitai

doi:10.1006/jssc.2000.8727

Cited by 31 publications

(16 citation statements)

References 13 publications

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“…Selenium forms both stoichiometric and non‐stoichiometric compounds with Co or Ni that exhibit semiconductor behavior and whose properties can be readily tuned by varying the Co/Ni : Se ratio. High temperature treatment of a mixture of Se and target metal precursors in the solid state or in the presence of a suitable solvent are the most commonly reported methods for synthesis of metal selenides . Other methods include electrodeposition and solvothermal synthesis in an autoclave, among others.…”

Section: Cobalt and Nickel Containing Non‐metal And Metalloid Elementmentioning

confidence: 99%

The Role of Non‐Metallic and Metalloid Elements on the Electrocatalytic Activity of Cobalt and Nickel Catalysts for the Oxygen Evolution Reaction

2019

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Compounds and alloys of cobalt and nickel with some nonmetals (N, P, S, Se) and metalloids (C, B, C, As and Te) have emerged as very promising noble metal-free pre-catalysts for the oxygen evolution reaction (OER) in alkaline electrolytes. However, the exact role played by the non-metals and metalloids in promoting the OER is not well understood. A holistic understanding of the origin of the OER activity enhancement in these compounds is vital for their exploitation as models to inspire knowledge-guided design of improved OER catalysts. In this review, we elucidate the factors that govern the activity and stability of OER catalysts derived from MX compounds (M = Co or Ni, and X = nonmetal or metalloid), including the impact of surface electronic structure, M : X stoichiometry, material composition, structure and crystallinity, as well as the role of oxoanions on the properties of the electrochemical double layer and interaction energies of the reaction intermediates. Finally, we outline a few perspectives and research directions towards a deeper understanding of the role of the nonmetal and metalloid elements and design of improved OER catalysts.[a] Dr.

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Section: Cobalt and Nickel Containing Non‐metal And Metalloid Elementmentioning

confidence: 99%

The Role of Non‐Metallic and Metalloid Elements on the Electrocatalytic Activity of Cobalt and Nickel Catalysts for the Oxygen Evolution Reaction

2019

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“…Recently, several lower temperature methods, such as the sol -gel method [3], mechanical alloying (MA) [4] and soft chemistry including cationic exchange, dehydration, hydrolysis, redox and deintercalation [5], have been used to prepare technologically important materials. On the intermediate-temperature methods, the hydrothermal and the solvothermal methods [6][7][8][9] have been used to produce novel materials with unusual physical and chemical properties.…”

Section: Introductionmentioning

confidence: 99%

Structural, thermal and optical studies of Ni3Se2 compound produced by mechanical alloying

et al. 2004

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“…26 The TEM images (Figure 1) reveal that the as-prepared cobalt selenide consisted of dendrite-like nanostructures.…”

Section: Resultsmentioning

confidence: 99%

“…26 Briefly, cobalt powder (2 mmol) and one equivalent of selenium powder were ground together in an agate roller. The precursors and anhydrous ethylenediamine (27 mL) were added to a Teflon-lined autoclave and heated at 140°C for 12 h. A black product was collected, and it was washed with absolute ethanol three times, then dried at 60°C for 4 h before further characterization.…”

Section: Synthesis Of Nanocrystalline Cobalt Selenidementioning

confidence: 99%

Peroxidase-like activity of nanocrystalline cobalt selenide and its application for uric acid detection

Zhuang

Lin

Jiang

et al. 2017

IJN

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Dendrite-like cobalt selenide nanostructures were synthesized from cobalt and selenium powder precursors by a solvothermal method in anhydrous ethylenediamine. The as-prepared nanocrystalline cobalt selenide was found to possess peroxidase-like activity that could catalyze the reaction of peroxidase substrates in the presence of H 2 O 2 . A spectrophotometric method for uric acid (UA) determination was developed based on the nanocrystalline cobalt selenide-catalyzed coupling reaction between N -ethyl- N -(3-sulfopropyl)-3-methylaniline sodium salt and 4-aminoantipyrine (4-AAP) in the presence of H 2 O 2 . Under optimum conditions, the absorbance was proportional to the concentration of UA over the range of 2.0–40 μM with a detection limit of 0.5 μM. The applicability of the proposed method has been validated by determination of UA in human serum samples with satisfactory results.

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Synthesis of Nanocrystalline Cobalt Selenide in Nonaqueous Solvent

Cited by 31 publications

References 13 publications

The Role of Non‐Metallic and Metalloid Elements on the Electrocatalytic Activity of Cobalt and Nickel Catalysts for the Oxygen Evolution Reaction

The Role of Non‐Metallic and Metalloid Elements on the Electrocatalytic Activity of Cobalt and Nickel Catalysts for the Oxygen Evolution Reaction

Structural, thermal and optical studies of Ni3Se2 compound produced by mechanical alloying

Peroxidase-like activity of nanocrystalline cobalt selenide and its application for uric acid detection

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