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Substantial Narrowing on the Width of “Concentration Window” of Hydrothermal ZnO Nanowires via Ammonia Addition

A crystal growth of hydrothermal ZnO nanowires essentially requires a concentration control within so-called “concentration window”, where the anisotropic crystal growth of ZnO nanowires preferentially occurs. Although understanding what exactly determines the width of “concentration window” is impo...

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Autores principales: Sakai, Daiki, Nagashima, Kazuki, Yoshida, Hideto, Kanai, Masaki, He, Yong, Zhang, Guozhu, Zhao, Xixi, Takahashi, Tsunaki, Yasui, Takao, Hosomi, Takuro, Uchida, Yuki, Takeda, Seiji, Baba, Yoshinobu, Yanagida, Takeshi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6775099/
https://www.ncbi.nlm.nih.gov/pubmed/31578443
http://dx.doi.org/10.1038/s41598-019-50641-y
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author Sakai, Daiki
Nagashima, Kazuki
Yoshida, Hideto
Kanai, Masaki
He, Yong
Zhang, Guozhu
Zhao, Xixi
Takahashi, Tsunaki
Yasui, Takao
Hosomi, Takuro
Uchida, Yuki
Takeda, Seiji
Baba, Yoshinobu
Yanagida, Takeshi
author_facet Sakai, Daiki
Nagashima, Kazuki
Yoshida, Hideto
Kanai, Masaki
He, Yong
Zhang, Guozhu
Zhao, Xixi
Takahashi, Tsunaki
Yasui, Takao
Hosomi, Takuro
Uchida, Yuki
Takeda, Seiji
Baba, Yoshinobu
Yanagida, Takeshi
author_sort Sakai, Daiki
collection PubMed
description A crystal growth of hydrothermal ZnO nanowires essentially requires a concentration control within so-called “concentration window”, where the anisotropic crystal growth of ZnO nanowires preferentially occurs. Although understanding what exactly determines the width of “concentration window” is important to tailor the anisotropic crystal growth process, the fundamental knowledge as to “concentration window” is still scarce. Here we report the effect of ammonia addition on the width of “concentration window” using conventional hydrothermal ZnO nanowire growth. We found that the ammonia addition substantially narrows the width of “concentration window”. Within the narrow range of zinc complex concentration, we found a significant increase of growth rate (up to 2000 nm/h) of ZnO nanowires. The narrowed “concentration window” and the resultant increased growth rate by the ammonia addition can be understood in terms of synchronized effects of both (1) a reduction of zinc hydroxide complex (precursor) concentration and (2) a fast rate limiting process of ligand exchange between different zinc complexes. Thus, the present knowldege as to “concentration window” will accelerate further tailoring an anisotropic crystal growth of hydrothermal ZnO nanowires.
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spelling pubmed-67750992019-10-09 Substantial Narrowing on the Width of “Concentration Window” of Hydrothermal ZnO Nanowires via Ammonia Addition Sakai, Daiki Nagashima, Kazuki Yoshida, Hideto Kanai, Masaki He, Yong Zhang, Guozhu Zhao, Xixi Takahashi, Tsunaki Yasui, Takao Hosomi, Takuro Uchida, Yuki Takeda, Seiji Baba, Yoshinobu Yanagida, Takeshi Sci Rep Article A crystal growth of hydrothermal ZnO nanowires essentially requires a concentration control within so-called “concentration window”, where the anisotropic crystal growth of ZnO nanowires preferentially occurs. Although understanding what exactly determines the width of “concentration window” is important to tailor the anisotropic crystal growth process, the fundamental knowledge as to “concentration window” is still scarce. Here we report the effect of ammonia addition on the width of “concentration window” using conventional hydrothermal ZnO nanowire growth. We found that the ammonia addition substantially narrows the width of “concentration window”. Within the narrow range of zinc complex concentration, we found a significant increase of growth rate (up to 2000 nm/h) of ZnO nanowires. The narrowed “concentration window” and the resultant increased growth rate by the ammonia addition can be understood in terms of synchronized effects of both (1) a reduction of zinc hydroxide complex (precursor) concentration and (2) a fast rate limiting process of ligand exchange between different zinc complexes. Thus, the present knowldege as to “concentration window” will accelerate further tailoring an anisotropic crystal growth of hydrothermal ZnO nanowires. Nature Publishing Group UK 2019-10-02 /pmc/articles/PMC6775099/ /pubmed/31578443 http://dx.doi.org/10.1038/s41598-019-50641-y Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Sakai, Daiki
Nagashima, Kazuki
Yoshida, Hideto
Kanai, Masaki
He, Yong
Zhang, Guozhu
Zhao, Xixi
Takahashi, Tsunaki
Yasui, Takao
Hosomi, Takuro
Uchida, Yuki
Takeda, Seiji
Baba, Yoshinobu
Yanagida, Takeshi
Substantial Narrowing on the Width of “Concentration Window” of Hydrothermal ZnO Nanowires via Ammonia Addition
title Substantial Narrowing on the Width of “Concentration Window” of Hydrothermal ZnO Nanowires via Ammonia Addition
title_full Substantial Narrowing on the Width of “Concentration Window” of Hydrothermal ZnO Nanowires via Ammonia Addition
title_fullStr Substantial Narrowing on the Width of “Concentration Window” of Hydrothermal ZnO Nanowires via Ammonia Addition
title_full_unstemmed Substantial Narrowing on the Width of “Concentration Window” of Hydrothermal ZnO Nanowires via Ammonia Addition
title_short Substantial Narrowing on the Width of “Concentration Window” of Hydrothermal ZnO Nanowires via Ammonia Addition
title_sort substantial narrowing on the width of “concentration window” of hydrothermal zno nanowires via ammonia addition
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6775099/
https://www.ncbi.nlm.nih.gov/pubmed/31578443
http://dx.doi.org/10.1038/s41598-019-50641-y
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