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Surfactant-mediated self-assembly of Sb2S3 nanorods during hydrothermal synthesis

Published online by Cambridge University Press:  20 December 2016

Mou Pal ,
Nini R. Mathews  and
Xavier Mathew
Mou Pal*
Affiliation:
Instituto de Física, Benemerita Universidad Autonoma de Puebla, Puebla, C.P. 72570, México
Nini R. Mathews
Affiliation:
Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Temixco 62580, Morelos, México
Xavier Mathew*
Affiliation:
Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Temixco 62580, Morelos, México
*
a) Address all correspondence to these authors. e-mail: mou@ifuap.buap.mx
b) e-mail: xm@ier.unam.mx
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Abstract

In the present work, we report the development of phase pure and highly crystalline stibnite Sb2S3 nanostructures by a surfactant-mediated hydrothermal method. Polyvinylpyrrolidone (PVP) as the surfactant has a striking effect on the assembly of nanorods into dumbbell shaped nanorod-bundles. While nanorods with high aspect ratio were formed in absence of the surfactant, dumbbell shaped nanorod bundles were obtained using the surfactant. The structural, morphological, and optical properties were examined by X-ray diffraction (XRD), Raman scattering, scanning electron microscopy (SEM), energy dispersive x-ray spectroscopy, x-ray photoelectron spectroscopy (XPS), and UV–visible spectrophotometer. Both XRD and Raman spectroscopy confirmed the formation of orthorhombic phase pure stibnite (Sb2S3). The ratio of Sb to S is found to be close to 2:3, corresponding to Sb2S3. The optical band gap varied in the range of 1.65–1.68 eV depending on the concentration of the surfactant.

Keywords

Sb2S3 nanorod bundleshydrothermalsurfactantnanoparticlessemiconductors

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Type
Articles
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Journal of Materials Research , Volume 32 , Issue 3 , 14 February 2017 , pp. 530 - 538
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Copyright
Copyright © Materials Research Society 2016 

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Footnotes

Contributing Editor: Gary L. Messing

References

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