以油菜花粉为模板合成了Ag/ZnO纳米颗粒,采用X射线衍射仪、扫描电子显微镜等手段对样品进行了结构形貌表征,并测试了其气敏性能.结果表明,所得产物为直径30~50 nm左右的六方纤锌矿结构, Ag/ZnO纳米粒子在相对低的工作温度(270 ℃)下,对100×10-6的丙酮气体的灵敏度达到了38.2(约为ZnO的10倍),其响应和恢复时间分别为3和36 s.
Rape pollen template synthesized Ag/ZnO nanoparticles were characterized by X-ray diffraction, scanning electron microscopy and gas-sensing test.The results showed that the Ag/ZnO nanoparticles with diameter of 30-50 nm mainly involves a hexagonal wurtzite structure and a little silver metal phase.The gas-sensing measurements revealed that the Ag(2%) /ZnO sensor has an enhanced response (38.2) to 100×10-6 acetone gas at a relatively low working temperature (270 ℃), which is about 10 times than that of the pure ZnO.The response and recovery time of the sensor are 3 and 36 s, respectively.
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