CO gas-sensing properties of CuO-TiN and CuO-TiN-TiO2 prepared by controlled oxidation of Cu-TiN composites

Je Shin Park; Chae Hun Lim; Young Ki Cho; Yeon Tae Yu

doi:10.1007/s12540-015-4135-1

CO gas-sensing properties of CuO-TiN and CuO-TiN-TiO₂ prepared by controlled oxidation of Cu-TiN composites

Je Shin Park^*
, Chae Hun Lim
, Young Ki Cho
, Yeon Tae Yu

^*Corresponding author for this work

SeAH Besteel Corp.
Jeonbuk National University

Research output: Contribution to journal › Journal article › peer-review

7 Scopus citations

Abstract

P-type Cu-TiN composites sensitive to CO gas, CuO-TiN and CuO-TiN-TiO₂, were synthesized by ball milling Cu₃₃Ti₆₇ and Cu₁₅Ti₈₅ alloys for 25 h in a pressurized N₂ atmosphere. The sensing materials of CuO-TiN and CuO-TiN-TiO₂ were prepared via a two-step oxidation process following an investigation of their CO gas-sensing properties. Their sensing responses for CO gas were compared; typical for p-type semiconductors, the resistances of both sensing materials increased as CO was introduced. The CuO-TiN-TiO₂ powder had a greater response than the CuO-TiN powder at all temperatures tested. The highest responses shown by the two materials were to 1000 ppm CO at 250 °C: a response of 5.4 by CuO-TiN-TiO₂ and 3.1 by CuO-TiN. During the first oxidation step of CuO-TiN-TiO₂, micropores were formed that significantly increased this material’s specific surface area. Therefore, we believe that the superior response of the CuO-TiN-TiO₂ sensing material was due to this surface area enlargement during the oxidation treatment.

Original language	English
Pages (from-to)	330-336
Number of pages	7
Journal	Metals and Materials International
Volume	21
Issue number	2
DOIs	https://doi.org/10.1007/s12540-015-4135-1
State	Published - 2015.03

Keywords

composites
gas sensing materals
mechanical milling
nanostructured materials
powder processing

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Engineering - Mechanical
Physics & Astronomy

Access to Document

10.1007/s12540-015-4135-1

Cite this

@article{4afccf5ccb8e444e9ed9b6afb48f2566,

title = "CO gas-sensing properties of CuO-TiN and CuO-TiN-TiO2 prepared by controlled oxidation of Cu-TiN composites",

abstract = "P-type Cu-TiN composites sensitive to CO gas, CuO-TiN and CuO-TiN-TiO2, were synthesized by ball milling Cu33Ti67 and Cu15Ti85 alloys for 25 h in a pressurized N2 atmosphere. The sensing materials of CuO-TiN and CuO-TiN-TiO2 were prepared via a two-step oxidation process following an investigation of their CO gas-sensing properties. Their sensing responses for CO gas were compared; typical for p-type semiconductors, the resistances of both sensing materials increased as CO was introduced. The CuO-TiN-TiO2 powder had a greater response than the CuO-TiN powder at all temperatures tested. The highest responses shown by the two materials were to 1000 ppm CO at 250 °C: a response of 5.4 by CuO-TiN-TiO2 and 3.1 by CuO-TiN. During the first oxidation step of CuO-TiN-TiO2, micropores were formed that significantly increased this material{\textquoteright}s specific surface area. Therefore, we believe that the superior response of the CuO-TiN-TiO2 sensing material was due to this surface area enlargement during the oxidation treatment.",

keywords = "composites, gas sensing materals, mechanical milling, nanostructured materials, powder processing",

author = "Park, \{Je Shin\} and Lim, \{Chae Hun\} and Cho, \{Young Ki\} and Yu, \{Yeon Tae\}",

note = "Publisher Copyright: {\textcopyright} 2015, The Korean Institute of Metals and Materials and Springer Science+Business Media Dordrecht.",

year = "2015",

month = mar,

doi = "10.1007/s12540-015-4135-1",

language = "English",

volume = "21",

pages = "330--336",

journal = "Metals and Materials International",

issn = "1225-9438",

number = "2",

}

TY - JOUR

T1 - CO gas-sensing properties of CuO-TiN and CuO-TiN-TiO2 prepared by controlled oxidation of Cu-TiN composites

AU - Park, Je Shin

AU - Lim, Chae Hun

AU - Cho, Young Ki

AU - Yu, Yeon Tae

PY - 2015/3

Y1 - 2015/3

N2 - P-type Cu-TiN composites sensitive to CO gas, CuO-TiN and CuO-TiN-TiO2, were synthesized by ball milling Cu33Ti67 and Cu15Ti85 alloys for 25 h in a pressurized N2 atmosphere. The sensing materials of CuO-TiN and CuO-TiN-TiO2 were prepared via a two-step oxidation process following an investigation of their CO gas-sensing properties. Their sensing responses for CO gas were compared; typical for p-type semiconductors, the resistances of both sensing materials increased as CO was introduced. The CuO-TiN-TiO2 powder had a greater response than the CuO-TiN powder at all temperatures tested. The highest responses shown by the two materials were to 1000 ppm CO at 250 °C: a response of 5.4 by CuO-TiN-TiO2 and 3.1 by CuO-TiN. During the first oxidation step of CuO-TiN-TiO2, micropores were formed that significantly increased this material’s specific surface area. Therefore, we believe that the superior response of the CuO-TiN-TiO2 sensing material was due to this surface area enlargement during the oxidation treatment.

AB - P-type Cu-TiN composites sensitive to CO gas, CuO-TiN and CuO-TiN-TiO2, were synthesized by ball milling Cu33Ti67 and Cu15Ti85 alloys for 25 h in a pressurized N2 atmosphere. The sensing materials of CuO-TiN and CuO-TiN-TiO2 were prepared via a two-step oxidation process following an investigation of their CO gas-sensing properties. Their sensing responses for CO gas were compared; typical for p-type semiconductors, the resistances of both sensing materials increased as CO was introduced. The CuO-TiN-TiO2 powder had a greater response than the CuO-TiN powder at all temperatures tested. The highest responses shown by the two materials were to 1000 ppm CO at 250 °C: a response of 5.4 by CuO-TiN-TiO2 and 3.1 by CuO-TiN. During the first oxidation step of CuO-TiN-TiO2, micropores were formed that significantly increased this material’s specific surface area. Therefore, we believe that the superior response of the CuO-TiN-TiO2 sensing material was due to this surface area enlargement during the oxidation treatment.

KW - composites

KW - gas sensing materals

KW - mechanical milling

KW - nanostructured materials

KW - powder processing

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U2 - 10.1007/s12540-015-4135-1

DO - 10.1007/s12540-015-4135-1

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JO - Metals and Materials International

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