Plasma-enhanced chemical vapor deposition in a CO/H₂ microwave discharge system was performed for synthesizing of carbon nanowalls template and subsequently potentiostatic anodic deposition technique was applied for depositing of manganese oxides onto the carbon nanowall surfaces. Characterization of the synthesized nanocomposite films was done via scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The electrochemical properties of MnO_x/CNW electrode were investigated by cyclic voltammetry and amperometry techniques. The prepared nanocomposite electrode exhibited high electrochemical activity for the detection of hydrogen peroxide (H₂O₂) in phosphate buffer solution at an applied potential of +0.7 V, showing a linear dependence on the concentration of H₂O₂ from 40 μM to 10,230 μM, a high sensitivity (698.6 μA mM⁻¹ cm⁻²), and a detection limit of 0.55 μM (signal/noise = 3). The sensor exhibited good selectivity toward hydrogen peroxide detection against ascorbic acid, uric acid, and citric acid. This study demonstrates a great potential of CNW based composite electrodes in nonenzymatic electrochemical sensor application.

在CO / H ₂微波放电系统中进行等离子体增强化学气相沉积以合成碳纳米壁模板，随后采用恒电位阳极沉积技术将锰氧化物沉积到碳纳米壁表面上。合成的纳米复合薄膜的表征是通过扫描电子显微镜（SEM）和X射线光电子能谱（XPS）进行的。用循环伏安法和安培法研究了MnO _x / CNW电极的电化学性能。制备的纳米复合电极对过氧化氢（H ₂ O _2）的检测具有很高的电化学活性。）在+0.7 V的施加电势下的磷酸盐缓冲溶液中，对H ₂ O ₂的浓度从40μM到10,230μM呈线性依赖性，高灵敏度（698.6μAmM ^-1  cm ^-2）和检测极限为0.55μM（信号/噪声= 3）。该传感器对过氧化氢检测抗坏血酸，尿酸和柠檬酸具有良好的选择性。这项研究证明了基于CNW的复合电极在非酶电化学传感器应用中的巨大潜力。