摘要
采用循环伏安法在碳纳米管（CNTs）修饰的玻碳电极上合成聚中性红（PNR）/铁氰化镍（NiHCF）颗粒,并分别采用扫描电镜（SEM）、傅里叶红外（FT-IR）、循环伏安法（CV）和计时安培电流法（CA）等方法考察了复合膜的微观形貌、结构和电化学催化性能.结果表明,复合膜为三维多孔有序的网络状结构,PNR和 NiHCF 以纳米颗粒形式存在并沿 CNTs 均匀分布.PNR/NiHCF/CNTs 复合膜对过氧化氢（H 2 O 2）表现出了优异的电催化性能并显示出了良好的协同效应.该复合膜电极对 H 2 O 2的催化还原电流与其浓度在6．25＆#215;10-6~3＆#215;10-3之间呈良好的线性关系,线性相关系数 R ＝0．9989,检出限为1＆#215;10-7 mol/L,同时具有较高的灵敏度1455．9 mA？？L/（mol？？cm2）,并且复合膜有良好的稳定性和重现性,可实际应用于H 2 O 2传感器.
Eletroactive composite film with poly（neutral red）/nickel hexacyanoferrate （PNR/NiHCF）on carbon nanotubes （CNTs）modified glassy carbon electrode （GCE）were synthesized by using cyclic voltammetry（CV）. The morphologies and structures of the as-prepared PNR/NiHCF/CNTs films were characterized using scan-ning electron microscopy（SEM）and Fourier transform infrared spectroscopy（FT-IR）,respectively.SEM images showed the three-dimensional porous network composite films with uniform distribution of both PNR and NiH-CF nanoparticles along the CNTs.The composite films were applied for H 2 O 2 detection and showed synergy and excellent electrocatalytic activity.The linear range for the detection of H 2 O 2 was 6.25 ＆#215; 10 -6 -3 ＆#215; 10 -3 mol/L with a high sensitivity of 1 455.9 mA？？L/（mol？？cm2 ）and a rapid response （less than 3 s）.The detection limit for H 2 O 2 was as low as 1＆#215;10 -7 mol/L （S/N =3）.The hybrid film prepared had good stability and reproduc-ibility in the detection of H 2 O 2 ,and should be useful in practical H 2 O 2 sensors.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2014年第1期129-134,共6页
Journal of Functional Materials
基金
国家自然科学基金资助项目(21276173)
山西省自然科学基金资助项目(2012011020-5
2012011006-1)
