Morphological Evolution Induced through a Heterojunction of W-Decorated NiO Nanoigloos: Synergistic Effect on High-Performance Gas Sensors

Seung Yeop Yi; Young Geun Song; Jae Yeol Park; Jun Min Suh; Gwang Su Kim; Young Seok Shim; Jong Min Yuk; Sangtae Kim; Ho Won Jang; Byeong Kwon Ju; Chong Yun Kang

doi:10.1021/acsami.8b18678

Morphological Evolution Induced through a Heterojunction of W-Decorated NiO Nanoigloos: Synergistic Effect on High-Performance Gas Sensors

Seung Yeop Yi
, Young Geun Song
, Jae Yeol Park
, Jun Min Suh
, Gwang Su Kim
, Young Seok Shim
, Jong Min Yuk
, Sangtae Kim
, Ho Won Jang
, Byeong Kwon Ju
, Chong Yun Kang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

45 Citations (Scopus)

Abstract

Morphological evolution accompanying a surface roughening and preferred orientation is an effective way to realize a high-performance gas sensor because of its significant potential as a chemical catalyst through chemical potentials and atomic energy states. In this work, we investigated a heterojunction of double-side-W-decorated NiO nanoigloos fabricated through radio frequency sputtering and a softlate method. Interestingly, a morphological evolution characterized by a pyramidal rough surface and the preferred orientation of the (111) plane was observed upon decorating the bare NiO nanoigloos with W. The underlying mechanism of the morphological evolution was precisely demonstrated based on the van der Drift competitive growth model originating from the oxygen transport and chemical strain in the lattice. The gas sensing properties of W-decorated NiO show an excellent NO ₂ response and selectivity when compared to other gases. In addition, high response stability was evaluated under interference gas and humidity conditions. The synergistic effects on the sensing performance were interpreted on the basis of the morphological evolution of W-decorated NiO nanoigloos.

Original language	English
Pages (from-to)	7529-7538
Number of pages	10
Journal	ACS Applied Materials and Interfaces
Volume	11
Issue number	7
DOIs	https://doi.org/10.1021/acsami.8b18678
Publication status	Published - 2019 Feb 20

Bibliographical note

Funding Information:
This work was supported by an Institute for Information & Communications Technology Promotion (IITP) grant funded by the Korean government (MSIP; Ministry of Science, ICT & Future Planning) (No. 2015-0-0031, Olfactory Bio Databased Emotion Enhancement Interactive Content Technology Development) and a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP; Ministry of Science, ICT & Future Planning) (NRF-2018R1C1B6002624, NRF-2018M3A7B4065625 NRF-2018H1A2A1060105-Global Ph.D. Fellowship Program).

Publisher Copyright:
© 2019 American Chemical Society.

Keywords

NO
gas sensor
heterojunction
morphological evolution
nanostructure

ASJC Scopus subject areas

General Materials Science

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10.1021/acsami.8b18678

Cite this

Yi, S. Y., Song, Y. G., Park, J. Y., Suh, J. M., Kim, G. S., Shim, Y. S., Yuk, J. M., Kim, S., Jang, H. W., Ju, B. K., & Kang, C. Y. (2019). Morphological Evolution Induced through a Heterojunction of W-Decorated NiO Nanoigloos: Synergistic Effect on High-Performance Gas Sensors. ACS Applied Materials and Interfaces, 11(7), 7529-7538. https://doi.org/10.1021/acsami.8b18678

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title = "Morphological Evolution Induced through a Heterojunction of W-Decorated NiO Nanoigloos: Synergistic Effect on High-Performance Gas Sensors",

abstract = " Morphological evolution accompanying a surface roughening and preferred orientation is an effective way to realize a high-performance gas sensor because of its significant potential as a chemical catalyst through chemical potentials and atomic energy states. In this work, we investigated a heterojunction of double-side-W-decorated NiO nanoigloos fabricated through radio frequency sputtering and a softlate method. Interestingly, a morphological evolution characterized by a pyramidal rough surface and the preferred orientation of the (111) plane was observed upon decorating the bare NiO nanoigloos with W. The underlying mechanism of the morphological evolution was precisely demonstrated based on the van der Drift competitive growth model originating from the oxygen transport and chemical strain in the lattice. The gas sensing properties of W-decorated NiO show an excellent NO 2 response and selectivity when compared to other gases. In addition, high response stability was evaluated under interference gas and humidity conditions. The synergistic effects on the sensing performance were interpreted on the basis of the morphological evolution of W-decorated NiO nanoigloos. ",

keywords = "NO, gas sensor, heterojunction, morphological evolution, nanostructure",

author = "Yi, \{Seung Yeop\} and Song, \{Young Geun\} and Park, \{Jae Yeol\} and Suh, \{Jun Min\} and Kim, \{Gwang Su\} and Shim, \{Young Seok\} and Yuk, \{Jong Min\} and Sangtae Kim and Jang, \{Ho Won\} and Ju, \{Byeong Kwon\} and Kang, \{Chong Yun\}",

note = "Funding Information: This work was supported by an Institute for Information \& Communications Technology Promotion (IITP) grant funded by the Korean government (MSIP; Ministry of Science, ICT \& Future Planning) (No. 2015-0-0031, Olfactory Bio Databased Emotion Enhancement Interactive Content Technology Development) and a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP; Ministry of Science, ICT \& Future Planning) (NRF-2018R1C1B6002624, NRF-2018M3A7B4065625 NRF-2018H1A2A1060105-Global Ph.D. Fellowship Program). Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

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AU - Yi, Seung Yeop

AU - Song, Young Geun

AU - Park, Jae Yeol

AU - Suh, Jun Min

AU - Kim, Gwang Su

AU - Shim, Young Seok

AU - Yuk, Jong Min

AU - Kim, Sangtae

AU - Jang, Ho Won

AU - Ju, Byeong Kwon

AU - Kang, Chong Yun

N1 - Funding Information: This work was supported by an Institute for Information & Communications Technology Promotion (IITP) grant funded by the Korean government (MSIP; Ministry of Science, ICT & Future Planning) (No. 2015-0-0031, Olfactory Bio Databased Emotion Enhancement Interactive Content Technology Development) and a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP; Ministry of Science, ICT & Future Planning) (NRF-2018R1C1B6002624, NRF-2018M3A7B4065625 NRF-2018H1A2A1060105-Global Ph.D. Fellowship Program). Publisher Copyright: © 2019 American Chemical Society.

PY - 2019/2/20

Y1 - 2019/2/20

N2 - Morphological evolution accompanying a surface roughening and preferred orientation is an effective way to realize a high-performance gas sensor because of its significant potential as a chemical catalyst through chemical potentials and atomic energy states. In this work, we investigated a heterojunction of double-side-W-decorated NiO nanoigloos fabricated through radio frequency sputtering and a softlate method. Interestingly, a morphological evolution characterized by a pyramidal rough surface and the preferred orientation of the (111) plane was observed upon decorating the bare NiO nanoigloos with W. The underlying mechanism of the morphological evolution was precisely demonstrated based on the van der Drift competitive growth model originating from the oxygen transport and chemical strain in the lattice. The gas sensing properties of W-decorated NiO show an excellent NO 2 response and selectivity when compared to other gases. In addition, high response stability was evaluated under interference gas and humidity conditions. The synergistic effects on the sensing performance were interpreted on the basis of the morphological evolution of W-decorated NiO nanoigloos.

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KW - nanostructure

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ER -

Morphological Evolution Induced through a Heterojunction of W-Decorated NiO Nanoigloos: Synergistic Effect on High-Performance Gas Sensors

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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