TY - JOUR
T1 - Ammonia-Induced Seed Layer Transformations in a Hydrothermal Growth Process of Zinc Oxide Nanowires
AU - Liu, Quanli
AU - Yasui, Takao
AU - Nagashima, Kazuki
AU - Yanagida, Takeshi
AU - Hara, Mitsuo
AU - Horiuchi, Masafumi
AU - Zhu, Zetao
AU - Takahashi, Hiromi
AU - Shimada, Taisuke
AU - Arima, Akihide
AU - Baba, Yoshinobu
N1 - Funding Information:
This research was supported by PRESTO (JPMJPR151B, JPMJPR19H9), Japan Science and Technology Agency (JST), the “Development of Diagnostic Technology for Detection of miRNA in Body Fluids” grant from the Japan Agency for Medical Research and Development and New Energy and Industrial Technology Development Organization, the JSPS Grant-in-Aid for Young Scientists (A) 17H04803, the JSPS Grant-in-Aid for Scientific Research (A) 16H02091, the JSPS Grant-in-Aid for Scientific Research (S) 18H05243, a research grant from the Murata Science Foundation, Advanced Technology Institute Research Grants 2019, the Foundation of Public Interest of Tatematsu, the Nitto Foundation, and the Nanotechnology Platform Program (Molecule and Material Synthesis) of the Ministry of Education, Culture, Sports, Science and Technology (MEXT). We thank Dr. Daisuke Onoshima and Dr. Hiroshi Yukawa for valuable discussions.
Publisher Copyright:
Copyright © 2020 American Chemical Society.
PY - 2020/9/17
Y1 - 2020/9/17
N2 - Ammonia is a well-known additive to promote crystal growth in hydrothermal synthesis of ZnO nanowires. Although the effect of ammonia on the nanowire growth has been intensively investigated, its influence on the seed layer, which governs the initial nanowire growth, is rarely discussed. Here, we demonstrate that ammonia strongly affects the seed layer as well as the following nanowire growth. On increasing the ammonia concentration, the nanowire density first increases and then decreases, while the nanowire growth rate keeps increasing. Experimental results and thermodynamic calculations of the initial growth process reveal that the transformation of the seed layer induced by ammonia prior to nucleation critically determines the nanowire density and thus also influences the following nanowire growth. Present results highlight the critical importance of discussing the variation of seed layers in ammonia-involved hydrothermal synthesis and suggest a novel seed engineering approach for tailoring the ZnO nanowire growth.
AB - Ammonia is a well-known additive to promote crystal growth in hydrothermal synthesis of ZnO nanowires. Although the effect of ammonia on the nanowire growth has been intensively investigated, its influence on the seed layer, which governs the initial nanowire growth, is rarely discussed. Here, we demonstrate that ammonia strongly affects the seed layer as well as the following nanowire growth. On increasing the ammonia concentration, the nanowire density first increases and then decreases, while the nanowire growth rate keeps increasing. Experimental results and thermodynamic calculations of the initial growth process reveal that the transformation of the seed layer induced by ammonia prior to nucleation critically determines the nanowire density and thus also influences the following nanowire growth. Present results highlight the critical importance of discussing the variation of seed layers in ammonia-involved hydrothermal synthesis and suggest a novel seed engineering approach for tailoring the ZnO nanowire growth.
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U2 - 10.1021/acs.jpcc.0c05490
DO - 10.1021/acs.jpcc.0c05490
M3 - Article
AN - SCOPUS:85095436928
VL - 124
SP - 20563
EP - 20568
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 37
ER -