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以硝酸锌、氢氧化钠为原料,通过水热/煅烧法制备结构新颖的厚度在20 nm至40 nm之间的钌掺杂花瓣状氧化锌纳米片。采用粉末X射线衍射仪、场发射扫描电镜、氮气吸附法、气敏测试系统对产物进行物相、结构形貌、比表面积、气敏性能等的表征。结果表明,钌掺杂氧化锌纳米片对乙醇和丙酮气体的灵敏度高,探测浓度低,响应和恢复迅速。在360°C和100×10-6的条件下,对乙醇和丙酮的灵敏度分别达到33和67。在10×10-6的乙醇和丙酮气体中,其响应和恢复速度分别为4 s和9 s,3 s和10 s.
Ruthenium-doped petal-shaped ZnO nanosheets with novel structures of 20 nm to 40 nm were prepared by hydrothermal / calcined method using zinc nitrate and sodium hydroxide as raw materials. The products were characterized by means of X-ray powder diffraction, field emission scanning electron microscopy, nitrogen adsorption and gas sensing system. The phase, structure, specific surface area and gas sensitivity were characterized. The results show that the ruthenium-doped zinc oxide nanoplatelets have high sensitivity to ethanol and acetone gas, low detection concentration and rapid response and recovery. At 360 ° C and 100 × 10-6 conditions, the sensitivity of ethanol and acetone reached 33 and 67, respectively. In 10 × 10-6 ethanol and acetone gas, the response and recovery rates were 4 s and 9 s, 3 s and 10 s, respectively.