论文部分内容阅读
采用化学气相沉积法以泡沫镍为模板制备三维多孔网状泡沫石墨烯(GF),利用水热法在其表面垂直生长氧化锌纳米线阵列(Zn O NWAs),得到三维形貌的Zn O NWAs/GF复合材料.采用扫描电镜、透射电镜、X射线衍射、拉曼光谱等测试方法对该复合材料进行了表征.结果表明:制备的石墨烯层数较少且纯净无缺陷.Zn O NWAs垂直于三维GF表面且尺寸分布均匀.利用电化学方法用Zn O NWAs/GF检测左旋多巴(LD).电化学测试结果表明,Zn O NWAs/GF在线性范围为0~80μmol·L-1内检测LD时,检测灵敏度为0.41μA·(μmol·L-1)-1,且具有良好的重复性和稳定性.在尿酸(UA)干扰下,Zn O NWAs/GF对检测LD有很好的选择性.
Three-dimensional porous mesoporous graphene (GF) was prepared by chemical vapor deposition using nickel foam as a template. Zinc oxide nanowire arrays (Zn O NWAs) were vertically grown on the surface by hydrothermal method to obtain three-dimensional morphology of Zn O NWAs / GF composites.The composites were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction and Raman spectroscopy.The results show that the prepared graphene layers have fewer layers and are pure and defect-free.The Zn O NWAs are perpendicular On the surface of the three-dimensional GF, the size distribution was uniform.L-dopa (LD) was detected by Zn O NWAs / GF electrochemically.The results of electrochemical tests showed that the linear range of Zn O NWAs / GF was within 0-80 μmol·L -1 The detection sensitivity was 0.41 μA · (μmol·L-1) -1 with good repeatability and stability.Under the interference of uric acid (UA), Zn O NWAs / GF had good detection LD Selective.