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Galvanic replacement-enabled synthesis of in(oh)3/ag/c nanocomposite as an effective photocatalyst for ultraviolet c degradation of methylene blue

Sub-10 nm indium metal nanoparticles (In NPs) stabilized on conductive carbon were reacted with silver nitrate in dark conditions in water at room temperature in a galvanic replacement manner to produce an indium hydroxide/silver/carbon nanocomposite (In(OH)(3)/Ag/C). The chosen carbon imparted coll...

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Main Authors: Wong, P. M., Juan, J. C., Lai, J. C., Lim, T. H.
Format: Article
Published: American Chemical Society 2020
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/87962/
http://www.dx.doi.org/10.1021/acsomega.0c00881
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spelling my.utm.879622020-11-30T13:40:09Z http://eprints.utm.my/id/eprint/87962/ Galvanic replacement-enabled synthesis of in(oh)3/ag/c nanocomposite as an effective photocatalyst for ultraviolet c degradation of methylene blue Wong, P. M. Juan, J. C. Lai, J. C. Lim, T. H. TP Chemical technology Sub-10 nm indium metal nanoparticles (In NPs) stabilized on conductive carbon were reacted with silver nitrate in dark conditions in water at room temperature in a galvanic replacement manner to produce an indium hydroxide/silver/carbon nanocomposite (In(OH)(3)/Ag/C). The chosen carbon imparted colloidal stability, high surface area, and water dispersibility suitable for photodegradation of harmful dyes in water. The size and shape of indium hydroxide and silver nanoparticles produced were found to be 6.6 +/- 0.9 nm, similar to that of the In NPs that were started with. The nanocomposite was characterized by transmission electron microscopy, energy dispersive X-ray spectroscopy, powder X-ray diffraction, and thermogravimetric analysis. The galvanic reaction between In NPs and silver nitrate was tracked with UV-vis spectroscopy in a control experiment without a carbon substrate to confirm that the reaction was indeed thermodynamically spontaneous as indicated by the positive electromotive force (EMF) of +1.14 V calculated for In/Ag+ redox couple. The photocatalytic performance of the nanocomposite was evaluated to be approximately 90% under UVC radiation when 10 ppm of methylene blue and 13 wt % of indium hydroxide/silver loading on carbon were used. American Chemical Society 2020-06 Article PeerReviewed Wong, P. M. and Juan, J. C. and Lai, J. C. and Lim, T. H. (2020) Galvanic replacement-enabled synthesis of in(oh)3/ag/c nanocomposite as an effective photocatalyst for ultraviolet c degradation of methylene blue. ACS Omega, 5 (23). pp. 13719-13728. http://www.dx.doi.org/10.1021/acsomega.0c00881 DOI: 10.1021/acsomega.0c00881
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Wong, P. M.
Juan, J. C.
Lai, J. C.
Lim, T. H.
Galvanic replacement-enabled synthesis of in(oh)3/ag/c nanocomposite as an effective photocatalyst for ultraviolet c degradation of methylene blue
description Sub-10 nm indium metal nanoparticles (In NPs) stabilized on conductive carbon were reacted with silver nitrate in dark conditions in water at room temperature in a galvanic replacement manner to produce an indium hydroxide/silver/carbon nanocomposite (In(OH)(3)/Ag/C). The chosen carbon imparted colloidal stability, high surface area, and water dispersibility suitable for photodegradation of harmful dyes in water. The size and shape of indium hydroxide and silver nanoparticles produced were found to be 6.6 +/- 0.9 nm, similar to that of the In NPs that were started with. The nanocomposite was characterized by transmission electron microscopy, energy dispersive X-ray spectroscopy, powder X-ray diffraction, and thermogravimetric analysis. The galvanic reaction between In NPs and silver nitrate was tracked with UV-vis spectroscopy in a control experiment without a carbon substrate to confirm that the reaction was indeed thermodynamically spontaneous as indicated by the positive electromotive force (EMF) of +1.14 V calculated for In/Ag+ redox couple. The photocatalytic performance of the nanocomposite was evaluated to be approximately 90% under UVC radiation when 10 ppm of methylene blue and 13 wt % of indium hydroxide/silver loading on carbon were used.
format Article
author Wong, P. M.
Juan, J. C.
Lai, J. C.
Lim, T. H.
author_facet Wong, P. M.
Juan, J. C.
Lai, J. C.
Lim, T. H.
author_sort Wong, P. M.
title Galvanic replacement-enabled synthesis of in(oh)3/ag/c nanocomposite as an effective photocatalyst for ultraviolet c degradation of methylene blue
title_short Galvanic replacement-enabled synthesis of in(oh)3/ag/c nanocomposite as an effective photocatalyst for ultraviolet c degradation of methylene blue
title_full Galvanic replacement-enabled synthesis of in(oh)3/ag/c nanocomposite as an effective photocatalyst for ultraviolet c degradation of methylene blue
title_fullStr Galvanic replacement-enabled synthesis of in(oh)3/ag/c nanocomposite as an effective photocatalyst for ultraviolet c degradation of methylene blue
title_full_unstemmed Galvanic replacement-enabled synthesis of in(oh)3/ag/c nanocomposite as an effective photocatalyst for ultraviolet c degradation of methylene blue
title_sort galvanic replacement-enabled synthesis of in(oh)3/ag/c nanocomposite as an effective photocatalyst for ultraviolet c degradation of methylene blue
publisher American Chemical Society
publishDate 2020
url http://eprints.utm.my/id/eprint/87962/
http://www.dx.doi.org/10.1021/acsomega.0c00881
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score 13.211869

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