scholarly journals Carbon Black-Carbon Nanotube Co-Doped Polyimide Sensors for Simultaneous Determination of Ascorbic Acid, Uric Acid, and Dopamine

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1691 ◽  
Author(s):  
Yue Wang ◽  
Tian Yang ◽  
Yasushi Hasebe ◽  
Zhiqiang Zhang ◽  
Dongping Tao
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Carbon Nanotube ◽  
Carbon Black ◽  
Simultaneous Determination ◽  
Simultaneous Detection ◽  
High Sensitivity ◽  
Differential Pulse ◽  
Co Doped

Carbon black (CB) and carbon nanotube (CNT) co-doped polyimide (PI) modified glassy carbon electrode (CB-CNT/PI/GCE) was first prepared for the simultaneous determination of ascorbic acid (AA), dopamine (DA), and uric acid (UA). The CB-CNT/PI/GCE exhibited persistent electrochemical behavior and excellent catalytic activities. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were used for the simultaneous detection of AA, DA, and UA in their ternary mixture. The peak separations between AA and DA, and DA and UA, are up to 166 mV and 148 mV, respectively. The CB-CNT/PI/GCE exhibited high sensitivity to DA and UA, with the detection limit of 1.9 µM and 3 µM, respectively. In addition, the CB-CNT/PI/GCE showed sufficient selectivity and long-term stability, and was applicable to detect AA, DA, and UA in human urine sample.

Simultaneous determination of dopamine, ascorbic acid and uric acid using a multi-walled carbon nanotube and reduced graphene oxide hybrid functionalized by PAMAM and Au nanoparticles

2015 ◽  
Vol 7 (4) ◽  
pp. 1471-1477 ◽  
Author(s):  
Siyuan Wang ◽  
Wen Zhang ◽  
Xia Zhong ◽  
Yaqin Chai ◽  
Ruo Yuan
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Simultaneous Determination ◽  
Au Nanoparticles ◽  
Electrochemical Determination ◽  
Multi Walled Carbon Nanotube ◽  
Reduced Graphene

A nanohybrid (RGO–PAMAM–MWCNT–AuNPs) for simultaneous electrochemical determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA) was reported in this paper.

Simultaneous determination of ascorbic acid, dopamine and uric acid at a nitrogen-doped carbon nanofiber modified electrode

RSC Advances ◽  
2015 ◽  
Vol 5 (16) ◽  
pp. 11925-11932 ◽  
Author(s):  
Jinying Sun ◽  
Libo Li ◽  
Xueping Zhang ◽  
Dong Liu ◽  
Simin Lv ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Carbon Nanofiber ◽  
Simultaneous Detection ◽  
High Sensitivity ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Small Biomolecules ◽  
Excellent Stability

This paper demonstrates high electrocatalytic activity of NCNF/GCE towards small biomolecules. The proposed electrochemical sensor exhibits good selectivity, high sensitivity and excellent stability towards AA, DA and UA simultaneous detection.

Simultaneous voltammetric determination of ascorbic acid and uric acid using a seven-hole carbon nanotube paste multielectrode array

2014 ◽  
Vol 6 (22) ◽  
pp. 8965-8972 ◽  
Author(s):  
Yage Peng ◽  
Dongdong Zhang ◽  
Chengxiao Zhang
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Carbon Nanotube ◽  
Simultaneous Determination ◽  
Counter Electrode ◽  
Reference Electrode ◽  
Voltammetric Determination ◽  
Multielectrode Array ◽  
Simultaneous Voltammetric Determination

Simultaneous determination of ascorbic acid and uric acid using a multielectrode array system, including six small carbon nanotube paste working electrodes, a large carbon nanotube paste counter electrode, an Ag/AgCl micro-reference electrode and a novel ‘micro-drop’ cell.

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