Controlling the oxidation state of molybdenum oxide nanoparticles prepared by ionic liquid/metal sputtering to enhance plasmon-induced charge separation

Nanoparticles composed of molybdenum oxide, MoO(x), were successfully prepared by room-temperature ionic liquid (RTIL)/metal sputtering followed by heat treatment. Hydroxyl groups in RTIL molecules retarded the coalescence between MoO(x) NPs during heat treatment at 473 K in air, while the oxidation...

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Detalles Bibliográficos
Autores principales: Akiyoshi, Kazutaka, Kameyama, Tatsuya, Yamamoto, Takahisa, Kuwabata, Susumu, Tatsuma, Tetsu, Torimoto, Tsukasa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9055849/
https://www.ncbi.nlm.nih.gov/pubmed/35520071
http://dx.doi.org/10.1039/d0ra05165a
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author Akiyoshi, Kazutaka
Kameyama, Tatsuya
Yamamoto, Takahisa
Kuwabata, Susumu
Tatsuma, Tetsu
Torimoto, Tsukasa
author_facet Akiyoshi, Kazutaka
Kameyama, Tatsuya
Yamamoto, Takahisa
Kuwabata, Susumu
Tatsuma, Tetsu
Torimoto, Tsukasa
author_sort Akiyoshi, Kazutaka
collection PubMed
description Nanoparticles composed of molybdenum oxide, MoO(x), were successfully prepared by room-temperature ionic liquid (RTIL)/metal sputtering followed by heat treatment. Hydroxyl groups in RTIL molecules retarded the coalescence between MoO(x) NPs during heat treatment at 473 K in air, while the oxidation state of Mo species in MoO(x) nanoparticles (NPs) could be modified by changing the heat treatment time. An LSPR peak was observed at 840 nm in the near-IR region for MoO(x) NPs of 55 nm or larger in size that were annealed in a hydroxyl-functionalized RTIL. Photoexcitation of the LSPR peak of MoO(x) NPs induced electron transfer from NPs to ITO electrodes.
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spelling pubmed-90558492022-05-04 Controlling the oxidation state of molybdenum oxide nanoparticles prepared by ionic liquid/metal sputtering to enhance plasmon-induced charge separation Akiyoshi, Kazutaka Kameyama, Tatsuya Yamamoto, Takahisa Kuwabata, Susumu Tatsuma, Tetsu Torimoto, Tsukasa RSC Adv Chemistry Nanoparticles composed of molybdenum oxide, MoO(x), were successfully prepared by room-temperature ionic liquid (RTIL)/metal sputtering followed by heat treatment. Hydroxyl groups in RTIL molecules retarded the coalescence between MoO(x) NPs during heat treatment at 473 K in air, while the oxidation state of Mo species in MoO(x) nanoparticles (NPs) could be modified by changing the heat treatment time. An LSPR peak was observed at 840 nm in the near-IR region for MoO(x) NPs of 55 nm or larger in size that were annealed in a hydroxyl-functionalized RTIL. Photoexcitation of the LSPR peak of MoO(x) NPs induced electron transfer from NPs to ITO electrodes. The Royal Society of Chemistry 2020-08-03 /pmc/articles/PMC9055849/ /pubmed/35520071 http://dx.doi.org/10.1039/d0ra05165a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Akiyoshi, Kazutaka
Kameyama, Tatsuya
Yamamoto, Takahisa
Kuwabata, Susumu
Tatsuma, Tetsu
Torimoto, Tsukasa
Controlling the oxidation state of molybdenum oxide nanoparticles prepared by ionic liquid/metal sputtering to enhance plasmon-induced charge separation
title Controlling the oxidation state of molybdenum oxide nanoparticles prepared by ionic liquid/metal sputtering to enhance plasmon-induced charge separation
title_full Controlling the oxidation state of molybdenum oxide nanoparticles prepared by ionic liquid/metal sputtering to enhance plasmon-induced charge separation
title_fullStr Controlling the oxidation state of molybdenum oxide nanoparticles prepared by ionic liquid/metal sputtering to enhance plasmon-induced charge separation
title_full_unstemmed Controlling the oxidation state of molybdenum oxide nanoparticles prepared by ionic liquid/metal sputtering to enhance plasmon-induced charge separation
title_short Controlling the oxidation state of molybdenum oxide nanoparticles prepared by ionic liquid/metal sputtering to enhance plasmon-induced charge separation
title_sort controlling the oxidation state of molybdenum oxide nanoparticles prepared by ionic liquid/metal sputtering to enhance plasmon-induced charge separation
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9055849/
https://www.ncbi.nlm.nih.gov/pubmed/35520071
http://dx.doi.org/10.1039/d0ra05165a
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