La3＋ doped ZnO nano-rods with different doping concentration were prepared via solvothermal method.The doped ZnO nano-rods were characterized by X-ray diffraction（XRD） and scanning electron microscopy（SEM）,respectively.The effect of La3＋ doping on the gas-sensing properties was investigated.The results revealed that the sensor based on 6 mol% La3＋ doped ZnO nano-rods exhibited high response to dilute acetone,and the responses to 0.01×10-6 acetone reached 2.4 when operating at 425 ℃.The response time and the recovery time for 0.01×10-6 acetone were only 16 and 3 s,respectively.
参考文献
| [1] | M. Faisal,Sher Bahadar Khan,Mohammed M. Rahman,Aslam Jamal,Kalsoom Akhtar,M.M. Abdullah.Role of ZnO-CeO_2 Nanostructures as a Photo-catalyst and Chemi-sensor[J].材料科学技术学报：英文版,2011(07):594-600. |
| [2] | R.S.Khadayate;J.V.Sali;P.P.Patil .Acetone vapor sensing properties of screen printed WO3 thick films[J].Talanta: The International Journal of Pure and Applied Analytical Chemistry,2007(3):1077-1081. |
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