RGO-MWNTs/铁氰化镍复合材料构筑无酶葡萄糖传感器  

A Non-enzymatic Glucose Sensor Based on RGO-MWNTs/NiHCF Nanocomposites

作　　者：莫韬[1] 黄富英[1] 陈国良[1] 李艳彩[1] 

机构地区：[1]闽南师范大学化学与环境学院,福建漳州363000

出　　处：《湖北民族学院学报（自然科学版）》2015年第4期453-456,477,共5页Journal of Hubei Minzu University(Natural Science Edition)

基　　金：闽南师范大学新世纪优秀人才支持计划(MX14003)

摘　　要：将制备的铁氰化镍纳米颗粒(Ni HCF)与石墨烯-碳纳米管(RGO-MWNTs)混合,分散于壳聚糖(Chit)溶液中,形成新的纳米复合材料(RGO-MWNTs/Ni HCF/Chit),将其修饰在玻碳电极表面.由于RGO-MWNTs具有良好的电子传递性能和Ni HCF与RGO-MWNTs之间的协同作用,促使Ni HCF电催化氧化能力有了很大的提高.与Ni HCF/Chit膜相比,RGO-MWNTs/Ni HCF/Chit复合膜的氧化还原峰电流增大了5倍,且在较低电位下对葡萄糖具有很好的电催化性能.该复合膜电极对葡萄糖的线性响应范围为0.03~0.096 m M,检测限为0.016 m M,可用于葡萄糖的电化学传感检测.Nickel hexacyanoferrate nanoparticles ( NiHCF) can be easily prepared by mixing hexacyano?ferrate and nickel sulfate solution at room temperature. The nanoparicles were solubilized in a biopolymer chitosan ( Chit) aqueous solution. With the introduction of RGO-MWNTs, the formed RGO-MWNTs/Ni?HCF/Chit film shows synergy between RGO-MWNTs and NiHCF with the significant improvement of red?ox activity of NiHCF due to the excellent electron-transfer ability of RGO-MWNTs. The RGO-MWNTs/NiHCF/Chit/GCE amplified the redox peak currents by 5 times compared with the NiHCF/Chit/GCE. The RGO-MWNTs/NiHCF/Chit/GCE allows low potential detection of glucose with high sensitivity and fast response time. The glucose sensor showed a linear dependence from 0.03 to 0.096 mM with a low de?tection limit of 0.016 μM ( S/N=3) .

关 键 词：铁氰化镍纳米颗粒 石墨烯/碳纳米管复合材料 壳聚糖 葡萄糖传感器 

分 类 号：O657.1[理学—分析化学] TP212[理学—化学]