One-Pot Hydrothermal Synthesis of Victoria Green (Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>) Nanoparticles in Alkaline Fluids and Its Colour Hue Characterisation
One-pot hydrothermal preparation of Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub> uvarovite nanoparticles under alkaline conditions was investigated for the first time. The experimental parameters selected for the study considered the concen...
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doaj-8df20e8c86ba420d9f4e72cb5b482cb52021-02-19T00:05:10ZengMDPI AGNanomaterials2079-49912021-02-011152152110.3390/nano11020521One-Pot Hydrothermal Synthesis of Victoria Green (Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>) Nanoparticles in Alkaline Fluids and Its Colour Hue CharacterisationJ. C. Rendón-Angeles0Z. Matamoros-Veloza1J. L. Rodríguez-Galicia2G. Seong3K. Yanagisawa4A. Tamayo5J. Rubio6L. A. Anaya-Chavira7Centre for Research and Advanced Studies of the National Polytechnic Institute, Saltillo Campus, Ramos Arizpe, Coahuila 25900, MexicoTecnológico Nacional de México/(I.T. Saltillo), Technological Institute of Saltillo, Graduate Division, Saltillo 25280, MexicoCentre for Research and Advanced Studies of the National Polytechnic Institute, Saltillo Campus, Ramos Arizpe, Coahuila 25900, MexicoNew Industry Creation Hatchery Center, Tohoku University, 6-6-10 Aoba, Aramaki, Aoba-Ku, Sendai 980-8579, JapanResearch Laboratory of Hydrothermal Chemistry, Faculty of Science, Kochi University, Kochi 780-8073, JapanInstitute of Ceramics and Glass, CSIC, 28049 Madrid, SpainInstitute of Ceramics and Glass, CSIC, 28049 Madrid, SpainCentre for Research and Advanced Studies of the National Polytechnic Institute, Saltillo Campus, Ramos Arizpe, Coahuila 25900, MexicoOne-pot hydrothermal preparation of Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub> uvarovite nanoparticles under alkaline conditions was investigated for the first time. The experimental parameters selected for the study considered the concentration of the KOH solvent solution (0.01 to 5.0 M), the agitation of the autoclave (50 rpm), and the nominal content of Si<sup>4+</sup> (2.2–3.0 mole). Fine uvarovite particles were synthesised at 200 °C after a 3 h interval in a highly concentrated 5.0 M KOH solution. The crystallisation of single-phase Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub> particles proceeded free of by-products via a one-pot process involving a single-step reaction. KOH solutions below 2.5 M and water hindered the crystallisation of the Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub> particles. The hydrothermal treatments carried out with stirring (50 rpm) and non-stirring triggered the crystallisation of irregular anhedral particles with average sizes of 8.05 and 12.25 nm, respectively. These particles spontaneously assembled into popcorn-shaped agglomerates with sizes varying from 66 to 156 nm. All the powders prepared by the present method exhibited CIE-L*a*b* values that correspond to the Victoria green colour spectral space and have a high near infrared reflectance property. The particle size and structural crystallinity are factors affecting the Victoria pigment optical properties, such as CIE-L*a*b* values, green tonality, and NIR reflectance.https://www.mdpi.com/2079-4991/11/2/521Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>Victorian green pigmenthydrothermal synthesisone-pot reactionhierarchical architecturenanosized dyes |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
J. C. Rendón-Angeles Z. Matamoros-Veloza J. L. Rodríguez-Galicia G. Seong K. Yanagisawa A. Tamayo J. Rubio L. A. Anaya-Chavira |
spellingShingle |
J. C. Rendón-Angeles Z. Matamoros-Veloza J. L. Rodríguez-Galicia G. Seong K. Yanagisawa A. Tamayo J. Rubio L. A. Anaya-Chavira One-Pot Hydrothermal Synthesis of Victoria Green (Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>) Nanoparticles in Alkaline Fluids and Its Colour Hue Characterisation Nanomaterials Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub> Victorian green pigment hydrothermal synthesis one-pot reaction hierarchical architecture nanosized dyes |
author_facet |
J. C. Rendón-Angeles Z. Matamoros-Veloza J. L. Rodríguez-Galicia G. Seong K. Yanagisawa A. Tamayo J. Rubio L. A. Anaya-Chavira |
author_sort |
J. C. Rendón-Angeles |
title |
One-Pot Hydrothermal Synthesis of Victoria Green (Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>) Nanoparticles in Alkaline Fluids and Its Colour Hue Characterisation |
title_short |
One-Pot Hydrothermal Synthesis of Victoria Green (Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>) Nanoparticles in Alkaline Fluids and Its Colour Hue Characterisation |
title_full |
One-Pot Hydrothermal Synthesis of Victoria Green (Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>) Nanoparticles in Alkaline Fluids and Its Colour Hue Characterisation |
title_fullStr |
One-Pot Hydrothermal Synthesis of Victoria Green (Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>) Nanoparticles in Alkaline Fluids and Its Colour Hue Characterisation |
title_full_unstemmed |
One-Pot Hydrothermal Synthesis of Victoria Green (Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>) Nanoparticles in Alkaline Fluids and Its Colour Hue Characterisation |
title_sort |
one-pot hydrothermal synthesis of victoria green (ca<sub>3</sub>cr<sub>2</sub>si<sub>3</sub>o<sub>12</sub>) nanoparticles in alkaline fluids and its colour hue characterisation |
publisher |
MDPI AG |
series |
Nanomaterials |
issn |
2079-4991 |
publishDate |
2021-02-01 |
description |
One-pot hydrothermal preparation of Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub> uvarovite nanoparticles under alkaline conditions was investigated for the first time. The experimental parameters selected for the study considered the concentration of the KOH solvent solution (0.01 to 5.0 M), the agitation of the autoclave (50 rpm), and the nominal content of Si<sup>4+</sup> (2.2–3.0 mole). Fine uvarovite particles were synthesised at 200 °C after a 3 h interval in a highly concentrated 5.0 M KOH solution. The crystallisation of single-phase Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub> particles proceeded free of by-products via a one-pot process involving a single-step reaction. KOH solutions below 2.5 M and water hindered the crystallisation of the Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub> particles. The hydrothermal treatments carried out with stirring (50 rpm) and non-stirring triggered the crystallisation of irregular anhedral particles with average sizes of 8.05 and 12.25 nm, respectively. These particles spontaneously assembled into popcorn-shaped agglomerates with sizes varying from 66 to 156 nm. All the powders prepared by the present method exhibited CIE-L*a*b* values that correspond to the Victoria green colour spectral space and have a high near infrared reflectance property. The particle size and structural crystallinity are factors affecting the Victoria pigment optical properties, such as CIE-L*a*b* values, green tonality, and NIR reflectance. |
topic |
Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub> Victorian green pigment hydrothermal synthesis one-pot reaction hierarchical architecture nanosized dyes |
url |
https://www.mdpi.com/2079-4991/11/2/521 |
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