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Laser Light Induced Transformation of Molybdenum Disulphide-Based Nanoplatelet Arrays
One-pot hydrothermal synthesis of MoS(2) nanoplatelet arrays on various substrates is perhaps the most promising approach to fabricate efficient electrocatalysts for hydrogen evolution reaction. However, the main challenges in this synthesis remain the purity and crystallinity of MoS(2). In this stu...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5124966/ https://www.ncbi.nlm.nih.gov/pubmed/27892489 http://dx.doi.org/10.1038/srep37514 |
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author | Jagminas, Arūnas Niaura, Gediminas Žalnėravičius, Rokas Trusovas, Romualdas Račiukaitis, Gediminas Jasulaitiene, Vitalija |
author_facet | Jagminas, Arūnas Niaura, Gediminas Žalnėravičius, Rokas Trusovas, Romualdas Račiukaitis, Gediminas Jasulaitiene, Vitalija |
author_sort | Jagminas, Arūnas |
collection | PubMed |
description | One-pot hydrothermal synthesis of MoS(2) nanoplatelet arrays on various substrates is perhaps the most promising approach to fabricate efficient electrocatalysts for hydrogen evolution reaction. However, the main challenges in this synthesis remain the purity and crystallinity of MoS(2). In this study, we show for the first time that irradiation of amorphous, defect-rich MoS(2) nanoplatelets with a green nanosecond laser at a proper irradiation dose, ca ≤0.35 J cm(−2), can significantly improve the crystallinity and purity of MoS(2) nanoplatelets. The effect was confirmed by Raman spectroscopy investigations demonstrating a surprising intensity increase of the A(1)(g) and [Image: see text] modes after the laser irradiation. Further increase of irradiation energy, however, resulted in the photocorrosion and destruction of MoS(2) nanoplatelets. The variation of A(1)(g) and [Image: see text] Raman mode intensities ratio depending on the green light irradiation dose was also presented and is discussed below. |
format | Online Article Text |
id | pubmed-5124966 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-51249662016-12-08 Laser Light Induced Transformation of Molybdenum Disulphide-Based Nanoplatelet Arrays Jagminas, Arūnas Niaura, Gediminas Žalnėravičius, Rokas Trusovas, Romualdas Račiukaitis, Gediminas Jasulaitiene, Vitalija Sci Rep Article One-pot hydrothermal synthesis of MoS(2) nanoplatelet arrays on various substrates is perhaps the most promising approach to fabricate efficient electrocatalysts for hydrogen evolution reaction. However, the main challenges in this synthesis remain the purity and crystallinity of MoS(2). In this study, we show for the first time that irradiation of amorphous, defect-rich MoS(2) nanoplatelets with a green nanosecond laser at a proper irradiation dose, ca ≤0.35 J cm(−2), can significantly improve the crystallinity and purity of MoS(2) nanoplatelets. The effect was confirmed by Raman spectroscopy investigations demonstrating a surprising intensity increase of the A(1)(g) and [Image: see text] modes after the laser irradiation. Further increase of irradiation energy, however, resulted in the photocorrosion and destruction of MoS(2) nanoplatelets. The variation of A(1)(g) and [Image: see text] Raman mode intensities ratio depending on the green light irradiation dose was also presented and is discussed below. Nature Publishing Group 2016-11-28 /pmc/articles/PMC5124966/ /pubmed/27892489 http://dx.doi.org/10.1038/srep37514 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Jagminas, Arūnas Niaura, Gediminas Žalnėravičius, Rokas Trusovas, Romualdas Račiukaitis, Gediminas Jasulaitiene, Vitalija Laser Light Induced Transformation of Molybdenum Disulphide-Based Nanoplatelet Arrays |
title | Laser Light Induced Transformation of Molybdenum Disulphide-Based Nanoplatelet Arrays |
title_full | Laser Light Induced Transformation of Molybdenum Disulphide-Based Nanoplatelet Arrays |
title_fullStr | Laser Light Induced Transformation of Molybdenum Disulphide-Based Nanoplatelet Arrays |
title_full_unstemmed | Laser Light Induced Transformation of Molybdenum Disulphide-Based Nanoplatelet Arrays |
title_short | Laser Light Induced Transformation of Molybdenum Disulphide-Based Nanoplatelet Arrays |
title_sort | laser light induced transformation of molybdenum disulphide-based nanoplatelet arrays |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5124966/ https://www.ncbi.nlm.nih.gov/pubmed/27892489 http://dx.doi.org/10.1038/srep37514 |
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