School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang 471003, China.
Medical College, Henan University of Science and Technology, Luoyang 471003, China.
J Nanosci Nanotechnol. 2019 Nov 1;19(11):7404-7409. doi: 10.1166/jnn.2019.16613.
Three-dimensional (3D) graphene with high specific surface area, excellent conductivity and designed porosity is essential for many practical applications. Herein, holey graphene oxide with nano pores was facilely prepared via a convenient mild defect-etching reaction and then fabricated to 3D nanostructures via a reduction method. Based on the 3D architectures, a novel enzymatic hydrogen peroxide sensor was successfully fabricated. Transmission electron microscopy (TEM), scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) were used to characterize the 3D holey graphene oxide architectures (3DHGO). Cyclic voltammetry (CV) was used to evaluate the electrochemical performance of 3DHGO at glassy carbon electrode (GCE). Excellent electrocatalytic activity to the reduction of H₂O₂ was observed, and a linear range of 5.0×10~5.0×10 M with a detection limit of 3.8×10 M was obtained. These results indicated that 3DHGO have potential as electrochemical biosensors.
具有高比表面积、优异导电性和设计多孔性的三维（3D）石墨烯对于许多实际应用至关重要。在此，通过简便温和的缺陷蚀刻反应，制备了具有纳米孔的多孔氧化石墨烯，然后通过还原法制备了 3D 纳米结构。基于 3D 结构，成功制备了一种新型酶过氧化氢传感器。使用透射电子显微镜（TEM）、扫描电子显微镜（SEM）、傅里叶变换红外光谱（FTIR）和 X 射线衍射（XRD）对 3D 多孔石墨烯氧化物结构（3DHGO）进行了表征。循环伏安法（CV）用于在玻碳电极（GCE）上评估 3DHGO 的电化学性能。观察到对 H₂O₂还原的优异电催化活性，并获得了 5.0×10~5.0×10 M 的线性范围和 3.8×10 M 的检测限。这些结果表明，3DHGO 具有作为电化学生物传感器的潜力。
