Acta Phys. -Chim. Sin. ›› 2008, Vol. 24 ›› Issue (07): 1292-1296.doi: 10.3866/PKU.WHXB20080729

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Preparation and Gas Sensitive Properties of ZnO-CuO Nanocomposites

FAN Hui-Tao; ZENG Yi; YANG Hai-Bin; ZHENG Xue-Jun; LIU Li; ZHANG Tong   

  1. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, P. R. China; National Laboratory of Superhard Materials, Jilin University, Changchun 130012, P. R. China; Key Laboratory of Low Dimensional Materials&Application Technology of the Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, P. R .China
  • Received:2007-12-04 Revised:2008-04-01 Published:2008-07-04
  • Contact: ZHANG Tong

Abstract: Zn-Cu alloy nanocomposites were prepared directly from Zn-Cu alloy wire (w(Zn)=0.65)) by wire electrical explosion (WEE) method. The average particle size was in the range of 60-90 nm. Subsequently, Zn-Cu nanoparticles were oxidized to form ZnO-CuO nanocomposites after calcination at 500 ℃ in air for 2 h. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were employed to analyze the structure and morphology of the ZnO-CuO nanocomposites. Furthermore, the ZnO-CuO nanocomposites were coated on the surface of a ceramic tube to fabricate thick filmgas sensors, which showed strong gas sensing activities to C2H5OH.

Key words: ZnO-CuO, Nanopowder, Wire electrical explosion, C2H5OH, Gas sensor


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