@article{ff00398ef3cd4bbbb60f41124a9a90fe,
title = "Rational Method of Monitoring Molecular Transformations on Metal-Oxide Nanowire Surfaces",
abstract = "Metal-oxide nanowires have demonstrated excellent capability in the electrical detection of various molecules based on their material robustness in liquid and air environments. Although the surface structure of the nanowires essentially determines their interaction with adsorbed molecules, understanding the correlation between an oxide nanowire surface and an adsorbed molecule is still a major challenge. Herein, we propose a rational methodology to obtain this information for low-density molecules adsorbed on metal oxide nanowire surfaces by employing infrared p-polarized multiple-angle incidence resolution spectroscopy and temperature-programmed desorption/gas chromatography-mass spectrometry. As a model system, we studied the surface chemical transformation of an aldehyde (nonanal, a cancer biomarker in breath) on single-crystalline ZnO nanowires. We found that a slight surface reconstruction, induced by the thermal pretreatment, determines the surface chemical reactivity of nonanal. The present results show that the observed surface reaction trend can be interpreted in terms of the density of Zn ions exposed on the nanowire surface and of their corresponding spatial arrangement on the surface, which promotes the reaction between neighboring adsorbed molecules. The proposed methodology will support a better understanding of complex molecular transformations on various nanostructured metal-oxide surfaces.",
author = "Chen Wang and Takuro Hosomi and Kazuki Nagashima and Tsunaki Takahashi and Guozhu Zhang and Masaki Kanai and Hao Zeng and Wataru Mizukami and Nobutaka Shioya and Takafumi Shimoaka and Takehiro Tamaoka and Hideto Yoshida and Seiji Takeda and Takao Yasui and Yoshinobu Baba and Yuriko Aoki and Jun Terao and Takeshi Hasegawa and Takeshi Yanagida",
note = "Funding Information: The authors are indebted to Dr. Y. Miura, the Center of Advanced Instrumental Analysis, Kyushu University for the XPS analysis. This work was supported by KAKENHI (grant nos. 17J09894, 17H04927, 18H01831, 18KK0112, and 18H05243) and CAS-JSPS Joint Research Projects (grant no. GJHZ1891). Y.T. was supported by the ImPACT Program of the Council for Science, Technology and Innovation (Cabinet Office, Government of Japan). T.T., T.H., K.N., J.T., and T.Y. were supported by JST CREST, Japan (grant no. JPMJCR1331). This work was performed under the Cooperative Research Program “Network Joint Research Center for Materials and Devices” and the MEXT Project “Integrated Research Consortium on Chemical Sciences”. Funding Information: The authors are indebted to Dr. Y. Miura, the Center of Advanced Instrumental Analysis, Kyushu University for the XPS analysis. This work was supported by KAKENHI (grant nos. 17J09894, 17H04927 18H01831, 18KK0112, and 18H05243) and CAS-JSPS Joint Research Projects (grant no. GJHZ1891). Y.T. was supported by the ImPACT Program of the Council for Science, Technology and Innovation (Cabinet Office Government of Japan). T.T., T.H., K.N., J.T., and T.Y. were supported by JST CREST, Japan (grant no. JPMJCR1331). This work was performed under the Cooperative Research Program Network Joint Research Center for Materials and Devices and the MEXT Project Integrated Research Consortium on Chemical Sciences. Publisher Copyright: Copyright {\textcopyright} 2019 American Chemical Society.",
year = "2019",
month = apr,
day = "10",
doi = "10.1021/acs.nanolett.8b05180",
language = "English",
volume = "19",
pages = "2443--2449",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "American Chemical Society",
number = "4",
}