Hydrothermal synthesis and gas sensing properties of single-crystalline ultralong ZnO nanowires

Li Li; Heqing Yang; Hua Zhao; Jie Yu; Junhu Ma; Lijuan An; Xuewen Wang

doi:10.1007/s00339-009-5457-y

Hydrothermal synthesis and gas sensing properties of single-crystalline ultralong ZnO nanowires

Li Li, Heqing Yang, Hua Zhao, Jie Yu, Junhu Ma, Lijuan An, Xuewen Wang

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

48 Scopus citations

Abstract

Ultralong ZnO nanowires were successfully synthesized by a simple hydrothermal reaction of Zn foil and aqueous Na₂C₂O ₄ solution at 140°C. The as-synthesized ZnO nanowires are single crystalline with the wurtzite structure and grow in the [0001] direction. The role of Na₂C₂O₄ in the formation of ultralong ZnO nanowires was investigated, and a possible mechanism was also proposed to account for the formation of the ultralong ZnO nanowires. The gas sensor fabricated on the basis of the ultralong ZnO nanowires showed excellent response characteristics towards NH₃ and N(C₂H₅) ₃ vapors with low concentration, and its detection limits for NH ₃ and N(C₂H₅)₃ are about 0.2 and 0.15 ppm at the working temperature of 180°C, respectively. This result suggests potential applications of the ultralong ZnO nanowires in monitoring flammable, toxic and corrosive gases.

Original language	English
Pages (from-to)	635-641
Number of pages	7
Journal	Applied Physics A: Materials Science and Processing
Volume	98
Issue number	3
DOIs	https://doi.org/10.1007/s00339-009-5457-y
State	Published - Mar 2010
Externally published	Yes

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title = "Hydrothermal synthesis and gas sensing properties of single-crystalline ultralong ZnO nanowires",

abstract = "Ultralong ZnO nanowires were successfully synthesized by a simple hydrothermal reaction of Zn foil and aqueous Na2C2O 4 solution at 140°C. The as-synthesized ZnO nanowires are single crystalline with the wurtzite structure and grow in the [0001] direction. The role of Na2C2O4 in the formation of ultralong ZnO nanowires was investigated, and a possible mechanism was also proposed to account for the formation of the ultralong ZnO nanowires. The gas sensor fabricated on the basis of the ultralong ZnO nanowires showed excellent response characteristics towards NH3 and N(C2H5) 3 vapors with low concentration, and its detection limits for NH 3 and N(C2H5)3 are about 0.2 and 0.15 ppm at the working temperature of 180°C, respectively. This result suggests potential applications of the ultralong ZnO nanowires in monitoring flammable, toxic and corrosive gases.",

author = "Li Li and Heqing Yang and Hua Zhao and Jie Yu and Junhu Ma and Lijuan An and Xuewen Wang",

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T1 - Hydrothermal synthesis and gas sensing properties of single-crystalline ultralong ZnO nanowires

AU - Li, Li

AU - Yang, Heqing

AU - Zhao, Hua

AU - Yu, Jie

AU - Ma, Junhu

AU - An, Lijuan

AU - Wang, Xuewen

PY - 2010/3

Y1 - 2010/3

N2 - Ultralong ZnO nanowires were successfully synthesized by a simple hydrothermal reaction of Zn foil and aqueous Na2C2O 4 solution at 140°C. The as-synthesized ZnO nanowires are single crystalline with the wurtzite structure and grow in the [0001] direction. The role of Na2C2O4 in the formation of ultralong ZnO nanowires was investigated, and a possible mechanism was also proposed to account for the formation of the ultralong ZnO nanowires. The gas sensor fabricated on the basis of the ultralong ZnO nanowires showed excellent response characteristics towards NH3 and N(C2H5) 3 vapors with low concentration, and its detection limits for NH 3 and N(C2H5)3 are about 0.2 and 0.15 ppm at the working temperature of 180°C, respectively. This result suggests potential applications of the ultralong ZnO nanowires in monitoring flammable, toxic and corrosive gases.

AB - Ultralong ZnO nanowires were successfully synthesized by a simple hydrothermal reaction of Zn foil and aqueous Na2C2O 4 solution at 140°C. The as-synthesized ZnO nanowires are single crystalline with the wurtzite structure and grow in the [0001] direction. The role of Na2C2O4 in the formation of ultralong ZnO nanowires was investigated, and a possible mechanism was also proposed to account for the formation of the ultralong ZnO nanowires. The gas sensor fabricated on the basis of the ultralong ZnO nanowires showed excellent response characteristics towards NH3 and N(C2H5) 3 vapors with low concentration, and its detection limits for NH 3 and N(C2H5)3 are about 0.2 and 0.15 ppm at the working temperature of 180°C, respectively. This result suggests potential applications of the ultralong ZnO nanowires in monitoring flammable, toxic and corrosive gases.

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JO - Applied Physics A: Materials Science and Processing

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Hydrothermal synthesis and gas sensing properties of single-crystalline ultralong ZnO nanowires

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