中文摘要：

本文通过π-π非共价键的方式合成了具有仿生功能的石墨烯-铁卟啉复合材料,并将其修饰在玻碳电极上,制备成一种新型的无酶H2O2传感器。利用傅里叶变换红外（FT-IR）光谱、紫外-可见吸收光谱（UV-Vis）及电化学阻抗谱（EIS）对合成材料进行了表征,并研究了该传感器对H2O2的电催化还原性能。实验结果表明,该传感器对H2O2具有较好的催化还原效果,能够在-0.24V电位下对H2O2进行测定;其对H2O2的线性检测范围为5.0×10-7～1.975×10-4 mol/L,检测限为4.1×10-7 mol/L。

英文摘要：

A novel hydrogen peroxide electrochemical biosensor without enzyme was developed.It was based on the thin film of graphene-iron-tetraphenylporphyrin（GR-FeTPP）composite which was prepared viaπ-π non-covalent interaction.GR-FeTPP was characterized by Fourier transform infrared spectroscopy（FT-IR）,Ultraviolet-visible absorption spectroscopy（UV-Vis）and electrochemical impedance spectroscopy（EIS）.And the electrochemical reduction of oxygen and hydrogen peroxide on the GR-ReTPP electrode were investigated.The GR-eTPP conposite showed excellent electro-catalytic reduction activity toward H2O2.The current response was linear to H2O2 concentration with the concentration range of 5.0×10-7-1.975×10-4 mol.L-1（R=0.9993）,and the detection limit was 4.1× 10-7 mol/L.