Bismuth Oxychloride Nanoplatelets by Breakdown Anodization
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Date
2019-01-18
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Mark
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Wiley-VCH Verlag
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Abstract
Herein, the synthesis of BiOCl nanoplatelets of various
dimensions is demonstrated. These materials were prepared by
anodic oxidation of Bi ingots in diluted HCl under dielectric breakdown
conditions, triggered by a sufficiently high anodic field. Additionally, it
is shown that the use of several other common diluted acids (HNO3,
H2SO4, lactic acid) resulted in the formation of various different
nanostructures. The addition of NH4F to the acidic electrolytes
accelerated the growth rate resulting in bismuth based nanostructures
with comparably smaller dimensions and an enormous volume
expansion observed during the growth. On the other hand, the
addition of lactic acid to the acidic electrolytes decelerated the oxide
growth rate. The resulting nanostructures were characterized using
SEM, XRD and TEM. BiOCl nanoplatelets received by anodization in
1 M HCl were successfully employed for the photocatalytic
decomposition of methylene blue dye and showed a superior
performance compared to commercially available BiOCl powder with
a similar crystalline structure, confirming its potential as a visible light
photocatalyst.
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Citation
ChemElectroChem. 2019, vol. 6, issue 2, p. 336-341.
https://onlinelibrary.wiley.com/doi/full/10.1002/celc.201801280
https://onlinelibrary.wiley.com/doi/full/10.1002/celc.201801280
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Peer-reviewed
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en
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
http://creativecommons.org/licenses/by-nc-nd/4.0/