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Hollow Ni–B amorphous alloy with enhanced catalytic efficiency prepared in emulsion system

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Abstract.
Ni–B nanospheres were synthesized through chemical reduction of nickel ions with borohydride in an
emulsion system comprised of cyclohexylamine, polyethylene glycol, and water. With the characterization
of X-ray diffraction, selective area electronic diffraction, X-ray photoelectron spectroscopy, and
transmission electron microscopy, the resulting hollow Ni–B nanospheres were identified to be amorphous
alloys with a hollow chamber. Cyclohexylamine played a significant role in fabricating hollow
Ni–B nanospheres, because only solid nanoparticles were obtained in the absence of cyclohexylamine.
Polyethylene glycol also had a significant influence on the formation of hollow Ni–B nanospheres,
because low yield of hollow nanospheres were achieved without this polymer. During liquid-phase chloronitrobenzene hydrogenation, the as-synthesized Ni–B catalyst exhibited a much higher activity and
even better selectivity than the dense Ni–B nanoparticles prepared by direct reduction of nickel ions with
borohydride.

Keywords:
Ni–B amorphous alloy
Hollow nanospheres
Emulsion system
Chloronitrobenzene
Hydrogenation
Chloroaniline

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Informasi Detail

Judul Seri

Journal of Colloid and Interface Science

No. Panggil

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Penerbit

London : Elsevier Inc.., 2009

Deskripsi Fisik

Journal of Colloid and Interface Science 334 (2009) 176–182

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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