中文摘要：

利用高分子支撑法将气相沉积（CVD）石墨烯从铜基底上转移到聚对苯二甲酸乙二醇酯（PET）基底上,制备出石墨烯平面电极（GPE）,通过循环伏安法将铁氰化钴（Co HCF）纳米颗沉积到GPE上,得到铁氰化钴修饰石墨烯平面电极（Co HCF/GPE）。研究表明,此电极对过氧化氢具有良好的传感作用,从而构建一种新型无酶过氧化氢传感器。此传感器在过氧化氢浓度为5.0-1200μmol/L范围内,响应电流与浓度呈现良好的线性关系,检出限为7.1 nmol/L（S/N=3）,响应时间约为2 s,具有稳定性好、抗干扰能力强、制备简单等优点。

英文摘要：

A large-area graphene platform electrode （GPE） was fabricated by transferring the chemical vapor deposition （ CVD） graphene grown on Cu foils to polyethylene terephthalate （ PET） substrates with the aid of polymethyl-methacrylate （ PMMA）. Then cobalt hexacyanoferrate （ CoHCF） was electrodeposited on the GPE by cyclic voltammetry to obtain a CoHCF/GPE. The morphology and electrochemical properties of this electrode were studied by scanning electron microscope （ SEM ） , electrochemical impedance spectroscopy （EIS） and the electrochemical measurements. Results showed that the electrode had favorable sensing effect toward H2O2. On the basis of this, a new nonenzyme H2O2 sensor was constructed. Under the optimal experimental conditions, the proposed sensor had a quick response to the addition of H2O2（about 2 s） with a wide linear rang （5 × 10^- 3-1.2 mmol/L） and a low detection limit （7.1 nmol/L）. This sensor was easy to fabricate and showed excellent stability and anti-interference ability.