Wang Ai-Jing, Jin Zhen, Sun Yu-Ru, Zhou Shu-Hao, Li Jie
Anhui Advanced Building Materials Engineering Laboratory, Anhui Jianzhu University, Hefei 230601, Anhui, People's Republic of China.
School of Materials and Chemical Engineering, Anhui JianZhu University, Hefei 230601, Anhui, People's Republic of China.
Nanotechnology. 2024 Oct 7;35(50). doi: 10.1088/1361-6528/ad7d14.
Ag modified ZnO nanoflowers were successfully prepared by sunlight induced solvent reduction method. The samples were characterized by x-ray diffractometer, field emission scanning electron microscope, transmission electron microscope and energy dispersive x-ray spectrum, and the results confirmed the presence of Ag nanoparticles on the ZnO nanoflower. The gas sensing performance of the materials was studied at different operating temperatures and different n-butanol concentrations. The results showed that the Ag modified ZnO nanoflower sensor responded to 50 ppm n-butanol up to 147.17 at 280 °C, and the Ag modified ZnO nanoflower sensor exhibited excellent repeatability, stability and response recovery time. In addition, different target gases were employed for the selectivity study of the Ag modified ZnO nanoflower. It can be found that the Ag modified ZnO nanoflower had good selectivity for n-butanol. The improved response of the Ag modified ZnO nanoflower sensor was attributed to the catalytic effect of Ag nanoparticles. The results indicate that the Ag modified ZnO nanoflower will become a very promising sensing material for n-butanol gas detection.
通过阳光诱导溶剂还原法成功制备了银修饰的氧化锌纳米花。采用X射线衍射仪、场发射扫描电子显微镜、透射电子显微镜和能量色散X射线光谱对样品进行了表征，结果证实了在氧化锌纳米花上存在银纳米颗粒。研究了材料在不同工作温度和不同正丁醇浓度下的气敏性能。结果表明，银修饰的氧化锌纳米花传感器在280℃时对50ppm正丁醇的响应高达147.17，且银修饰的氧化锌纳米花传感器具有优异的重复性、稳定性和响应恢复时间。此外，采用不同的目标气体对银修饰的氧化锌纳米花进行选择性研究。结果发现，银修饰的氧化锌纳米花对正丁醇具有良好的选择性。银修饰的氧化锌纳米花传感器响应的提高归因于银纳米颗粒的催化作用。结果表明，银修饰的氧化锌纳米花将成为一种非常有前途的用于正丁醇气体检测的传感材料。
