Thermal and structural studies of carbon coated Mo2C synthesized via in-situ single step reduction-carburization

Abstract Carbon coated nano molybdenum carbide (Mo2C) has been synthesized at 800 °C through single step reduction route using molybdenum trioxide (MoO3) as a precursor, polypropylene (P.P) as a carbon source and magnesium (Mg) as a catalyst in an autoclave. The synthesized samples were characterize...

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Autores principales:	Rameez Ahmad Mir, Piyush Sharma, Om Prakash Pandey
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5435bb91971042c3a291995c9892481c
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spelling	oai:doaj.org-article:5435bb91971042c3a291995c9892481c2021-12-02T15:05:26ZThermal and structural studies of carbon coated Mo2C synthesized via in-situ single step reduction-carburization10.1038/s41598-017-03197-82045-2322https://doaj.org/article/5435bb91971042c3a291995c9892481c2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03197-8https://doaj.org/toc/2045-2322Abstract Carbon coated nano molybdenum carbide (Mo2C) has been synthesized at 800 °C through single step reduction route using molybdenum trioxide (MoO3) as a precursor, polypropylene (P.P) as a carbon source and magnesium (Mg) as a catalyst in an autoclave. The synthesized samples were characterized by X-ray diffraction (XRD), thermal analysis techniques (TG/DTA/DTG), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). Williamson- Hall (W-H) analysis has been done to estimate various parameters like strain, stress and strain energy density. Multi-stage kinetic analysis of the product phase has been studied to establish the nature of the thermal decomposition. Coats-Redfern method applied to determine the mechanism involved in the decomposition of the product phase shows that initial and final stage follow F1 mechanism whereas middle stage follow F3 mechanism. The activation energy (E a) and pre-exponential factor (A) has also been determined. The morphological studies shows that the particles have partially spherical/faceted shape, with carbon coated having wide particle size distribution. The surface chemistry and surface area analysis were studied by X-ray photoelectron spectroscopy (XPS) and Brunauer-Emmet-Teller (BET), respectively. The formation mechanism of carbon coated Mo2C nano particles has been predicted based on the XRD, TG/DTA & DTG and microstructural results.Rameez Ahmad MirPiyush SharmaOm Prakash PandeyNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Rameez Ahmad Mir Piyush Sharma Om Prakash Pandey Thermal and structural studies of carbon coated Mo2C synthesized via in-situ single step reduction-carburization
description	Abstract Carbon coated nano molybdenum carbide (Mo2C) has been synthesized at 800 °C through single step reduction route using molybdenum trioxide (MoO3) as a precursor, polypropylene (P.P) as a carbon source and magnesium (Mg) as a catalyst in an autoclave. The synthesized samples were characterized by X-ray diffraction (XRD), thermal analysis techniques (TG/DTA/DTG), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). Williamson- Hall (W-H) analysis has been done to estimate various parameters like strain, stress and strain energy density. Multi-stage kinetic analysis of the product phase has been studied to establish the nature of the thermal decomposition. Coats-Redfern method applied to determine the mechanism involved in the decomposition of the product phase shows that initial and final stage follow F1 mechanism whereas middle stage follow F3 mechanism. The activation energy (E a) and pre-exponential factor (A) has also been determined. The morphological studies shows that the particles have partially spherical/faceted shape, with carbon coated having wide particle size distribution. The surface chemistry and surface area analysis were studied by X-ray photoelectron spectroscopy (XPS) and Brunauer-Emmet-Teller (BET), respectively. The formation mechanism of carbon coated Mo2C nano particles has been predicted based on the XRD, TG/DTA & DTG and microstructural results.
format	article
author	Rameez Ahmad Mir Piyush Sharma Om Prakash Pandey
author_facet	Rameez Ahmad Mir Piyush Sharma Om Prakash Pandey
author_sort	Rameez Ahmad Mir
title	Thermal and structural studies of carbon coated Mo2C synthesized via in-situ single step reduction-carburization
title_short	Thermal and structural studies of carbon coated Mo2C synthesized via in-situ single step reduction-carburization
title_full	Thermal and structural studies of carbon coated Mo2C synthesized via in-situ single step reduction-carburization
title_fullStr	Thermal and structural studies of carbon coated Mo2C synthesized via in-situ single step reduction-carburization
title_full_unstemmed	Thermal and structural studies of carbon coated Mo2C synthesized via in-situ single step reduction-carburization
title_sort	thermal and structural studies of carbon coated mo2c synthesized via in-situ single step reduction-carburization
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/5435bb91971042c3a291995c9892481c
work_keys_str_mv	AT rameezahmadmir thermalandstructuralstudiesofcarboncoatedmo2csynthesizedviainsitusinglestepreductioncarburization AT piyushsharma thermalandstructuralstudiesofcarboncoatedmo2csynthesizedviainsitusinglestepreductioncarburization AT omprakashpandey thermalandstructuralstudiesofcarboncoatedmo2csynthesizedviainsitusinglestepreductioncarburization
_version_	1718388829292855296

Thermal and structural studies of carbon coated Mo2C synthesized via in-situ single step reduction-carburization

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