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Structural Evolution of Chemically-Driven RuO(2) Nanowires and 3-Dimensional Design for Photo-Catalytic Applications

Growth mechanism of chemically-driven RuO(2) nanowires is explored and used to fabricate three-dimensional RuO(2) branched Au-TiO(2) nanowire electrodes for the photostable solar water oxidation. For the real time structural evolution during the nanowire growth, the amorphous RuO(2) precursors (Ru(O...

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Autores principales: Park, Joonmo, Lee, Jae Won, Ye, Byeong Uk, Chun, Sung He, Joo, Sang Hoon, Park, Hyunwoong, Lee, Heon, Jeong, Hu Young, Kim, Myung Hwa, Baik, Jeong Min
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4493639/
https://www.ncbi.nlm.nih.gov/pubmed/26149583
http://dx.doi.org/10.1038/srep11933
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author Park, Joonmo
Lee, Jae Won
Ye, Byeong Uk
Chun, Sung He
Joo, Sang Hoon
Park, Hyunwoong
Lee, Heon
Jeong, Hu Young
Kim, Myung Hwa
Baik, Jeong Min
author_facet Park, Joonmo
Lee, Jae Won
Ye, Byeong Uk
Chun, Sung He
Joo, Sang Hoon
Park, Hyunwoong
Lee, Heon
Jeong, Hu Young
Kim, Myung Hwa
Baik, Jeong Min
author_sort Park, Joonmo
collection PubMed
description Growth mechanism of chemically-driven RuO(2) nanowires is explored and used to fabricate three-dimensional RuO(2) branched Au-TiO(2) nanowire electrodes for the photostable solar water oxidation. For the real time structural evolution during the nanowire growth, the amorphous RuO(2) precursors (Ru(OH)(3)·H(2)O) are heated at 180 (°)C, producing the RuO(2) nanoparticles with the tetragonal crystallographic structure and Ru enriched amorphous phases, observed through the in-situ synchrotron x-ray diffraction and the high-resolution transmission electron microscope images. Growth then proceeds by Ru diffusion to the nanoparticles, followed by the diffusion to the growing surface of the nanowire in oxygen ambient, supported by the nucleation theory. The RuO(2) branched Au-TiO(2) nanowire arrays shows a remarkable enhancement in the photocurrent density by approximately 60% and 200%, in the UV-visible and Visible region, respectively, compared with pristine TiO(2) nanowires. Furthermore, there is no significant decrease in the device’s photoconductance with UV-visible illumination during 1 day, making it possible to produce oxygen gas without the loss of the photoactvity.
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spelling pubmed-44936392015-07-09 Structural Evolution of Chemically-Driven RuO(2) Nanowires and 3-Dimensional Design for Photo-Catalytic Applications Park, Joonmo Lee, Jae Won Ye, Byeong Uk Chun, Sung He Joo, Sang Hoon Park, Hyunwoong Lee, Heon Jeong, Hu Young Kim, Myung Hwa Baik, Jeong Min Sci Rep Article Growth mechanism of chemically-driven RuO(2) nanowires is explored and used to fabricate three-dimensional RuO(2) branched Au-TiO(2) nanowire electrodes for the photostable solar water oxidation. For the real time structural evolution during the nanowire growth, the amorphous RuO(2) precursors (Ru(OH)(3)·H(2)O) are heated at 180 (°)C, producing the RuO(2) nanoparticles with the tetragonal crystallographic structure and Ru enriched amorphous phases, observed through the in-situ synchrotron x-ray diffraction and the high-resolution transmission electron microscope images. Growth then proceeds by Ru diffusion to the nanoparticles, followed by the diffusion to the growing surface of the nanowire in oxygen ambient, supported by the nucleation theory. The RuO(2) branched Au-TiO(2) nanowire arrays shows a remarkable enhancement in the photocurrent density by approximately 60% and 200%, in the UV-visible and Visible region, respectively, compared with pristine TiO(2) nanowires. Furthermore, there is no significant decrease in the device’s photoconductance with UV-visible illumination during 1 day, making it possible to produce oxygen gas without the loss of the photoactvity. Nature Publishing Group 2015-07-07 /pmc/articles/PMC4493639/ /pubmed/26149583 http://dx.doi.org/10.1038/srep11933 Text en Copyright © 2015, Macmillan Publishers Limited 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
Park, Joonmo
Lee, Jae Won
Ye, Byeong Uk
Chun, Sung He
Joo, Sang Hoon
Park, Hyunwoong
Lee, Heon
Jeong, Hu Young
Kim, Myung Hwa
Baik, Jeong Min
Structural Evolution of Chemically-Driven RuO(2) Nanowires and 3-Dimensional Design for Photo-Catalytic Applications
title Structural Evolution of Chemically-Driven RuO(2) Nanowires and 3-Dimensional Design for Photo-Catalytic Applications
title_full Structural Evolution of Chemically-Driven RuO(2) Nanowires and 3-Dimensional Design for Photo-Catalytic Applications
title_fullStr Structural Evolution of Chemically-Driven RuO(2) Nanowires and 3-Dimensional Design for Photo-Catalytic Applications
title_full_unstemmed Structural Evolution of Chemically-Driven RuO(2) Nanowires and 3-Dimensional Design for Photo-Catalytic Applications
title_short Structural Evolution of Chemically-Driven RuO(2) Nanowires and 3-Dimensional Design for Photo-Catalytic Applications
title_sort structural evolution of chemically-driven ruo(2) nanowires and 3-dimensional design for photo-catalytic applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4493639/
https://www.ncbi.nlm.nih.gov/pubmed/26149583
http://dx.doi.org/10.1038/srep11933
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