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

Abstract A facile carbothermal route was adopted to obtain niobium carbide nanoparticles (NPs) embedded in carbon network from Nb2O5 to study photocatalytic behavior. Optimization of synthesis parameters to obtain single phase NbC NPs has been successfully done. The phase identification, morphology...

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Autores principales:	Aayush Gupta, Manish Mittal, Mahesh Kumar Singh, Steven L. Suib, Om Prakash Pandey
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Multiple Oxidation States Carbon Network Niobium Carbide (NbC) Photo Catalyst Reduction Carburization Medicine R Science Q
Acceso en línea:	https://doaj.org/article/95734dc55e5c4468a074a200413ad3a3
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spelling	oai:doaj.org-article:95734dc55e5c4468a074a200413ad3a32021-12-02T15:08:04ZLow temperature synthesis of NbC/C nano-composites as visible light photoactive catalyst10.1038/s41598-018-31989-z2045-2322https://doaj.org/article/95734dc55e5c4468a074a200413ad3a32018-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-31989-zhttps://doaj.org/toc/2045-2322Abstract A facile carbothermal route was adopted to obtain niobium carbide nanoparticles (NPs) embedded in carbon network from Nb2O5 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 NbCxOy centers on the surface of NPs. Due to the presence of NbCxOy 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.Aayush GuptaManish MittalMahesh Kumar SinghSteven L. SuibOm Prakash PandeyNature PortfolioarticleMultiple Oxidation StatesCarbon NetworkNiobium Carbide (NbC)Photo CatalystReduction CarburizationMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-17 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Multiple Oxidation States Carbon Network Niobium Carbide (NbC) Photo Catalyst Reduction Carburization Medicine R Science Q
spellingShingle	Multiple Oxidation States Carbon Network Niobium Carbide (NbC) Photo Catalyst Reduction Carburization Medicine R Science Q Aayush Gupta Manish Mittal Mahesh Kumar Singh Steven L. Suib Om Prakash Pandey Low temperature synthesis of NbC/C nano-composites as visible light photoactive catalyst
description	Abstract A facile carbothermal route was adopted to obtain niobium carbide nanoparticles (NPs) embedded in carbon network from Nb2O5 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 NbCxOy centers on the surface of NPs. Due to the presence of NbCxOy 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.
format	article
author	Aayush Gupta Manish Mittal Mahesh Kumar Singh Steven L. Suib Om Prakash Pandey
author_facet	Aayush Gupta Manish Mittal Mahesh Kumar Singh Steven L. Suib Om Prakash Pandey
author_sort	Aayush Gupta
title	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_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_sort	low temperature synthesis of nbc/c nano-composites as visible light photoactive catalyst
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/95734dc55e5c4468a074a200413ad3a3
work_keys_str_mv	AT aayushgupta lowtemperaturesynthesisofnbccnanocompositesasvisiblelightphotoactivecatalyst AT manishmittal lowtemperaturesynthesisofnbccnanocompositesasvisiblelightphotoactivecatalyst AT maheshkumarsingh lowtemperaturesynthesisofnbccnanocompositesasvisiblelightphotoactivecatalyst AT stevenlsuib lowtemperaturesynthesisofnbccnanocompositesasvisiblelightphotoactivecatalyst AT omprakashpandey lowtemperaturesynthesisofnbccnanocompositesasvisiblelightphotoactivecatalyst
_version_	1718388264290746368

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

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