Low temperature synthesis of NbC/C nano-composites as visible light photoactive catalyst

A facile carbothermal route was adopted to obtain niobium carbide nanoparticles (NPs) embedded in carbon network from Nb(2)O(5) to study photocatalytic behavior. Optimization of synthesis parameters to obtain single phase NbC NPs has been successfully done. The phase identification, morphology and n...

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Autores principales: Gupta, Aayush, Mittal, Manish, Singh, Mahesh Kumar, Suib, Steven L., Pandey, Om Prakash
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6133931/
https://www.ncbi.nlm.nih.gov/pubmed/30206350
http://dx.doi.org/10.1038/s41598-018-31989-z
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author Gupta, Aayush
Mittal, Manish
Singh, Mahesh Kumar
Suib, Steven L.
Pandey, Om Prakash
author_facet Gupta, Aayush
Mittal, Manish
Singh, Mahesh Kumar
Suib, Steven L.
Pandey, Om Prakash
author_sort Gupta, Aayush
collection PubMed
description A facile carbothermal route was adopted to obtain niobium carbide nanoparticles (NPs) embedded in carbon network from Nb(2)O(5) to study photocatalytic behavior. Optimization of synthesis parameters to obtain single phase NbC NPs has been successfully done. The phase identification, morphology and nature of carbon were determined with the help of X-ray diffraction, transmission electron microscopy (TEM) and Raman spectroscopy. X-ray photoelectron spectroscopy (XPS) suggested the presence of multiple oxidation states of Nb associated to NbC and NbC(x)O(y) centers on the surface of NPs. Due to the presence of NbC(x)O(y) on the surface of NPs, absorption under visible region of EM spectrum has been observed by UV-visible spectroscopy. Different organic dyes (RhB, MB and MO) were used to study the effect of holding time on the photocatalytic performance of as-synthesized samples. RhB dye was found to be the most sensitive organic molecule among all the considered dyes and degraded 78% in 120 min.
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spelling pubmed-61339312018-09-15 Low temperature synthesis of NbC/C nano-composites as visible light photoactive catalyst Gupta, Aayush Mittal, Manish Singh, Mahesh Kumar Suib, Steven L. Pandey, Om Prakash Sci Rep Article A facile carbothermal route was adopted to obtain niobium carbide nanoparticles (NPs) embedded in carbon network from Nb(2)O(5) to study photocatalytic behavior. Optimization of synthesis parameters to obtain single phase NbC NPs has been successfully done. The phase identification, morphology and nature of carbon were determined with the help of X-ray diffraction, transmission electron microscopy (TEM) and Raman spectroscopy. X-ray photoelectron spectroscopy (XPS) suggested the presence of multiple oxidation states of Nb associated to NbC and NbC(x)O(y) centers on the surface of NPs. Due to the presence of NbC(x)O(y) on the surface of NPs, absorption under visible region of EM spectrum has been observed by UV-visible spectroscopy. Different organic dyes (RhB, MB and MO) were used to study the effect of holding time on the photocatalytic performance of as-synthesized samples. RhB dye was found to be the most sensitive organic molecule among all the considered dyes and degraded 78% in 120 min. Nature Publishing Group UK 2018-09-11 /pmc/articles/PMC6133931/ /pubmed/30206350 http://dx.doi.org/10.1038/s41598-018-31989-z Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Gupta, Aayush
Mittal, Manish
Singh, Mahesh Kumar
Suib, Steven L.
Pandey, Om Prakash
Low temperature synthesis of NbC/C nano-composites as visible light photoactive catalyst
title Low temperature synthesis of NbC/C nano-composites as visible light photoactive catalyst
title_full Low temperature synthesis of NbC/C nano-composites as visible light photoactive catalyst
title_fullStr Low temperature synthesis of NbC/C nano-composites as visible light photoactive catalyst
title_full_unstemmed Low temperature synthesis of NbC/C nano-composites as visible light photoactive catalyst
title_short Low temperature synthesis of NbC/C nano-composites as visible light photoactive catalyst
title_sort low temperature synthesis of nbc/c nano-composites as visible light photoactive catalyst
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6133931/
https://www.ncbi.nlm.nih.gov/pubmed/30206350
http://dx.doi.org/10.1038/s41598-018-31989-z
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