Ultrafast carbothermal reduction of silica to silicon using a CO2 laser beam

Abstract We report the extraction of silicon via a carbothermal reduction process using a CO2 laser beam as a heat source. The surface of a mixture of silica and carbon black powder became brown after laser beam irradiation for a few tens of seconds, and clear peaks of crystalline silicon were obser...

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Autores principales:	Seok-Ho Maeng, Hakju Lee, Min Soo Park, Suhyun Park, Jaeki Jeong, Seongbeom Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/35414d5341f04424b0bd8352121aeef4
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spelling	oai:doaj.org-article:35414d5341f04424b0bd8352121aeef42021-12-02T11:43:43ZUltrafast carbothermal reduction of silica to silicon using a CO2 laser beam10.1038/s41598-020-78562-12045-2322https://doaj.org/article/35414d5341f04424b0bd8352121aeef42020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78562-1https://doaj.org/toc/2045-2322Abstract We report the extraction of silicon via a carbothermal reduction process using a CO2 laser beam as a heat source. The surface of a mixture of silica and carbon black powder became brown after laser beam irradiation for a few tens of seconds, and clear peaks of crystalline silicon were observed by Raman shift measurements, confirming the successful carbothermal reduction of silica. The influence of process parameters, including the laser beam intensity, radiation time, nitrogen gas flow in a reaction chamber, and the molar ratios of silica/carbon black of the mixture, on the carbothermal reduction process is explained in detail.Seok-Ho MaengHakju LeeMin Soo ParkSuhyun ParkJaeki JeongSeongbeom KimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-6 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Seok-Ho Maeng Hakju Lee Min Soo Park Suhyun Park Jaeki Jeong Seongbeom Kim Ultrafast carbothermal reduction of silica to silicon using a CO2 laser beam
description	Abstract We report the extraction of silicon via a carbothermal reduction process using a CO2 laser beam as a heat source. The surface of a mixture of silica and carbon black powder became brown after laser beam irradiation for a few tens of seconds, and clear peaks of crystalline silicon were observed by Raman shift measurements, confirming the successful carbothermal reduction of silica. The influence of process parameters, including the laser beam intensity, radiation time, nitrogen gas flow in a reaction chamber, and the molar ratios of silica/carbon black of the mixture, on the carbothermal reduction process is explained in detail.
format	article
author	Seok-Ho Maeng Hakju Lee Min Soo Park Suhyun Park Jaeki Jeong Seongbeom Kim
author_facet	Seok-Ho Maeng Hakju Lee Min Soo Park Suhyun Park Jaeki Jeong Seongbeom Kim
author_sort	Seok-Ho Maeng
title	Ultrafast carbothermal reduction of silica to silicon using a CO2 laser beam
title_short	Ultrafast carbothermal reduction of silica to silicon using a CO2 laser beam
title_full	Ultrafast carbothermal reduction of silica to silicon using a CO2 laser beam
title_fullStr	Ultrafast carbothermal reduction of silica to silicon using a CO2 laser beam
title_full_unstemmed	Ultrafast carbothermal reduction of silica to silicon using a CO2 laser beam
title_sort	ultrafast carbothermal reduction of silica to silicon using a co2 laser beam
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/35414d5341f04424b0bd8352121aeef4
work_keys_str_mv	AT seokhomaeng ultrafastcarbothermalreductionofsilicatosiliconusingaco2laserbeam AT hakjulee ultrafastcarbothermalreductionofsilicatosiliconusingaco2laserbeam AT minsoopark ultrafastcarbothermalreductionofsilicatosiliconusingaco2laserbeam AT suhyunpark ultrafastcarbothermalreductionofsilicatosiliconusingaco2laserbeam AT jaekijeong ultrafastcarbothermalreductionofsilicatosiliconusingaco2laserbeam AT seongbeomkim ultrafastcarbothermalreductionofsilicatosiliconusingaco2laserbeam
_version_	1718395333879267328

Ultrafast carbothermal reduction of silica to silicon using a CO2 laser beam

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