Precipitation of Nickel Hydroxides from Nickel Dodecylsulphate

C. Coudun; Jean-François Hochepied

doi:10.4028/www.scientific.net/SSP.106.35

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HomeSolid State PhenomenaSolid State Phenomena Vol. 106Precipitation of Nickel Hydroxides from Nickel...

Precipitation of Nickel Hydroxides from Nickel Dodecylsulphate

Abstract:

Classical precipitation techniques applied to a nickel di-dodecylsulphate Ni(DS)2 precursor were developed. In the range of concentrations studied this precursor forms direct micelles in water. In pH-controlled double jet precipitation with soda at 60°C, the pure a, poorly crystallised bbc and well crystallised b phases are successively obtained by pH shifts from 8 to 11, whereas the platelet morphology remains similar. In the same conditions, classical salts never lead to a phase and the particle size and morphology is pH dependent. Hydroxide precipitation by ammonia decomplexation, via heating at 60°C, Ni(DS)2 leads to well-calibrated stacks of b- Ni(OH)2 nanopancakes (300 nm in diameter and 200 nm stacking length) whereas classical salts lead to micrometric particles characterised by thin interconnected walls.

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Periodical:

Solid State Phenomena (Volume 106)

Pages:

35-40

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.106.35

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Online since:

September 2005

Authors:

C. Coudun, Jean-François Hochepied

Keywords:

Crystallization, Dodecylsulphate, Nickel Hydroxide, Precipitation, Template

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