超薄Co_3O_4纳米片薄膜制备及其电化学传感器性能

Synthesis of Ultrathin Co_3O_4 Nanoflakes Film Material for Electrochemical Sensing

本文以电沉积的金属钴薄膜作为原材料,通过简单的氧化技术获得了薄膜前驱体材料,并进一步在35℃热处理条件下获得了超薄Co_3O_4纳米片薄膜材料.通过扫描电镜、X-射线衍射、透射电镜、等手段对材料的物理结构进行了深入分析,并通过循环伏安法(CV)表征了该薄膜材料的电化学活性.作为电化学传感器件的活性材料,该薄膜材料对H_2O_2的检测表现出较宽的线性浓度检测范围(0~4 mmol·L^(-1))和较高的电流响应(~1.15 m A·cm^(-2)),在该领域具有较高的应用价值.

Ultrathin cobalt oxide（Co3O4） nanoflakes film material was synthesized by using an electro-deposited cobalt layer as a raw material through a simple oxidation method and followed by a heat treatment at 350 ℃. The physical characterizations of the Co3O4 nanoflakes film were performed by scanning electron microscopy（SEM）, X-ray diffraction（XRD） and transmission electron microscopy（TEM） technologies, and the electrochemical activity was measured by cyclic voltammetry（CV）. As a promising material for electrochemical sensing, the as-synthesized ultrathin Co3O4 nanoflakes film material exhibited excellent electrochemical activity for H2O2 with a wide linear detection range（0 ~ 4 mmol·L^-1） and high sensitive current response（~1.15 m A·cm^-2）.