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Issue 29, 2015
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Single-step synthesis and catalytic activity of structure-controlled nickel sulfide nanoparticles

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Abstract

Nanoparticle single-phase nickel sulfides such as NiS, NiS2, Ni3S4, and Ni7S6 were prepared from elemental sulfur and nickel nitrate hexahydrate, using a temperature-controlled precursor injection method. The initial ratio of the concentrations of the sources was used to control the size and phase of the final product. Phase control was confirmed using X-ray diffraction and transmission electron microscopy. The synthesized nickel sulfide phases, which had metallic characteristics, were used to study the catalytic reduction of 4-nitrophenol. The results showed that the catalytic activity of the NiS nanoparticles in the reduction of 4-nitrophenol to 4-aminophenol was higher than those of the other nickel sulfide phases. In addition, the nanocrystals showed good separation ability and reusability for reduction of 4-nitrophenol.

Graphical abstract: Single-step synthesis and catalytic activity of structure-controlled nickel sulfide nanoparticles

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Article information


Submitted
16 Apr 2015
Accepted
04 Jun 2015
First published
04 Jun 2015

CrystEngComm, 2015,17, 5431-5439
Article type
Paper
Author version available

Single-step synthesis and catalytic activity of structure-controlled nickel sulfide nanoparticles

R. Karthikeyan, D. Thangaraju, N. Prakash and Y. Hayakawa, CrystEngComm, 2015, 17, 5431
DOI: 10.1039/C5CE00742A

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