Enhanced Acetone-Sensing Performance of Au/ZnO Hybrids Synthesized Using a Solution Combustion Method

被引:24
作者
Li, Yan [1 ]
Lv, Tan [1 ]
Zhao, Fang-Xian [1 ]
Wang, Qiong [1 ]
Lian, Xiao-Xue [1 ]
Zou, Yun-Ling [1 ]
机构
[1] Civil Aviat Univ China, Coll Sci, Tianjin 300300, Peoples R China
关键词
zinc oxide; solution combustion; gas sensing; acetone sensor; Au doping; FLOWER-LIKE ZNO; DOPED ZNO; AU NANOPARTICLES; PHASE SYNTHESIS; FILM SENSORS; GAS; NANOSTRUCTURES; MICROSPHERES; DEVICE; NANOSHEETS;
D O I
10.1007/s13391-015-5146-2
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
ZnO semiconductor hybrids with high response and selectivity to various gases have received enormous attention for practical applications. In this work, Au/ZnO nanoparticles were synthesized via a facile solution combustion method, using chlorauric acid and zinc nitrate as the raw materials. X-ray diffraction and field-emission scanning microscopy revealed that the Au/ZnO nanoparticles, with diameters of 50 - 300 urn, were mainly composed of the ZnO -wurtzite phase and Au metal phase with a face-centered structure. The gas-sensing results indicated that the Au (4 at. %)/ZnO-based sensor exhibited the highest response and selectivity among all the as-obtained Au/ZnO products; moreover, its response to acetone was approximately 3 times greater than that of the pure ZnO, and the response (173) of the sensor to acetone was 2.4, 9.8, 17, and 22 times higher than that to C2H5OH, H-2, CO, and CH4 at 300 degrees C, respectively.
引用
收藏
页码:890 / 895
页数:6
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