Electrochemical determination of l-phenylalanine at polyaniline modified carbon electrode based on β-cyclodextrin incorporated carbon nanotube composite material and imprinted sol–gel film

Talanta ◽  
2011 ◽  
Vol 84 (2) ◽  
pp. 305-313 ◽  
Author(s):  
Yu-fang Hu ◽  
Zhao-hui Zhang ◽  
Hua-bin Zhang ◽  
Li-juan Luo ◽  
Shou-zhuo Yao
Keyword(s):  
Composite Material ◽  
Carbon Nanotube ◽  
Sol Gel ◽  
Electrochemical Determination ◽  
Carbon Electrode ◽  
Gel Film ◽  
Carbon Nanotube Composite

Fabrication of Graphene/Carbon Nanotube Composite Modified Electrode for Selective and Sensitive Determination of Uric Acid

2013 ◽  
Vol 641-642 ◽  
pp. 562-565
Author(s):  
Zheng Xiao Liu ◽  
Jian Fei Xia ◽  
Zong Hua Wang ◽  
Yan Zhi Xia ◽  
Fei Fei Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Uric Acid ◽  
Carbon Nanotube ◽  
Modified Electrode ◽  
Phosphate Buffer Solution ◽  
Carbon Electrode ◽  
Buffer Solution ◽  
Sensitive Determination ◽  
Carbon Nanotube Composite

A novel composite was firstly synthesized by compositing graphenes (G) and carbon nanotubes (CNTs) and then a new composite modified electrode (G/CNTs/GCE) was prepared by coating the resulting composite on the surface of the glassy carbon electrode (GCE). The composite modified electrode G/CNTs/GCE showed great electrochemical activities which were studied by sensitive determining the electrochemistry behaviors of uric acid (UA). It revealed when the concentration range of UA changed from 1×10-7 mol/L to 1×10-3 mol/L, the peak currents had linear relationship with the concentration of UA in the phosphate buffer solution (PBS) which the value of pH is 7.0. And the linear equation is ip (μA) = 21.55C+28.94 (C: mmol/L), with the related coefficient 0.9964.

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