Chiral electrochemical recognition of tryptophan enantiomers at a multi-walled carbon nanotube–N-carboxymethyl chitosan composite-modified glassy carbon electrode

2018 ◽  
Vol 42 (14) ◽  
pp. 11635-11641 ◽  
Author(s):  
Zhenliang Li ◽  
Zunli Mo ◽  
Pengji Yan ◽  
Shujuan Meng ◽  
Ruijuan Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Carboxymethyl Chitosan ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Multiwalled Carbon ◽  
Tryptophan Enantiomers ◽  
Multi Walled Carbon Nanotube ◽  
Electrochemical Recognition ◽  
Chitosan Composite

A simple chiral electrochemical sensor based on N-carboxymethyl chitosan covalently binding with ethylenediamine-carboxylic multiwalled carbon nanotubes was developed for recognition of tryptophan enantiomers.

Chiral electrochemical recognition of tryptophan enantiomers at a multi-walled carbon nanotube–chitosan composite modified glassy carbon electrode

RSC Advances ◽  
2015 ◽  
Vol 5 (119) ◽  
pp. 98020-98025 ◽  
Author(s):  
Lin-Yan Yu ◽  
Qi Liu ◽  
Xiong-Wei Wu ◽  
Xin-Yu Jiang ◽  
Jin-Gang Yu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Chiral Recognition ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Tryptophan Enantiomers ◽  
Multi Walled Carbon Nanotube ◽  
Electrochemical Recognition ◽  
Chitosan Composite

A multi-walled carbon nanotube–chitosan composite modified glassy carbon electrode (MWCNT–CS/GCE) was developed for the chiral recognition of tryptophan (Trp) enantiomers.

Electrochemical enantiorecognition of tryptophan enantiomers based on a multi-walled carbon nanotube–hydroxyethyl chitosan composite film

2017 ◽  
Vol 9 (35) ◽  
pp. 5149-5155 ◽  
Author(s):  
Zhenliang Li ◽  
Zunli Mo ◽  
Ruibin Guo ◽  
Shujuan Meng ◽  
Ruijuan Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Composite Film ◽  
Electrochemical Sensor ◽  
Tryptophan Enantiomers ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Chitosan Composite

A novel chiral electrochemical sensor based on hydroxyethyl chitosan (HECS) covalently binding with the carboxylic multi-walled carbon nanotubes (MWCNT–COOH) was fabricated for discrimination of tryptophan (Trp) enantiomers.

A web of poly(bisbenzimidazolatocopper(II)) around multiwalled carbon nanotubes for the electrochemical detection of hydrogen peroxide

2021 ◽  
Author(s):  
Kothandaraman Ramanujam ◽  
Tamilselvi Gurusamy ◽  
Rajendran Rajaram ◽  
Raja Murugan
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Peroxide ◽  
Carbon Nanotube ◽  
Electrochemical Detection ◽  
Glassy Carbon ◽  
Electrochemical Determination ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Multiwalled Carbon

The present work focuses on the electrochemical determination of hydrogen peroxide (H2O2), using a poly(bisbenzimidazolatocopper(II)) coordinated multiwalled carbon nanotube modified glassy carbon electrode (MWCNT/(BIM-Cu2+)n@GCE). The physical characterization techniques point to...

Electrochemical determination of bisphenol A using a polyacrylamide–multiwalled carbon nanotube-modified glassy carbon electrode

2015 ◽  
Vol 7 (19) ◽  
pp. 8220-8226 ◽  
Author(s):  
Jian Han ◽  
Faying Li ◽  
Liping Jiang ◽  
Kai Li ◽  
Yunhui Dong ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Bisphenol A ◽  
Signal Amplification ◽  
Electrochemical Determination ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Multiwalled Carbon ◽  
Amplification Strategy

A novel electrochemical sensor was fabricated for the determination of bisphenol A (BPA) based on a signal amplification strategy with polyacrylamide and multiwalled carbon nanotubes (PAM–MWCNTs).

Mechanical Properties Of Polyaniline / Multi-walled Carbon Nanotube Composite Films

2003 ◽  
Vol 791 ◽  
Author(s):  
P. C. Ramamurthy ◽  
W. R. Harrell ◽  
R. V. Gregory ◽  
B. Sadanadan ◽  
A. M. Rao
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Composite Films ◽  
Weight Percent ◽  
Organic Electronic Devices ◽  
Multiwalled Carbon ◽  
Multi Walled Carbon Nanotube ◽  
Contact Devices ◽  
Carbon Nanotube Composite

ABSTRACTHigh molecular weight polyaniline / multi-walled carbon nanotube composite films were fabricated using solution processing. Composite films with various weight percentages of multiwalled carbon nanotubes were fabricated. Physical properties of these composites were analyzed by thermogravimetric analysis, tensile testing, and scanning electron microscopy. These results indicate that the addition of multiwalled nanotubes to polyaniline significantly enhances the mechanical properties of the films. In addition, metal–semiconductor (composite) (MS) contact devices were fabricated, and it was observed that the current level in the films increased with increasing multiwalled nanotube content. Furthermore, it was observed that polyaniline containing one weight percent of carbon nanotubes appears to be the most promising composition for applications in organic electronic devices.

Preparation and application of copper hydroxide (oxide) / multiwalled carbon nanotubes nanocomposite-modified glassy carbon electrode as a nitrite sensor

2012 ◽  
Vol 90 (6) ◽  
pp. 517-525 ◽  
Author(s):  
Youqin Liu ◽  
Xiuying Tian ◽  
Yun Yan ◽  
Yuehua Xu
Keyword(s):  
Carbon Nanotubes ◽  
Detection Limit ◽  
Multiwalled Carbon Nanotubes ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
High Catalytic Activity ◽  
Carbon Electrode ◽  
Copper Hydroxide ◽  
Modified Glassy Carbon Electrode ◽  
Multiwalled Carbon

Copper hydroxide (oxide) / multiwalled carbon nanotubes nanocomposite-modified glassy carbon electrode (Cuhydroxide/oxide/MWCNTs/GCE) was successfully prepared by a novel film plating / cyclic voltammetry (CV) method, which exhibited marked synergistic catalytic effects on the electro-oxidation of NO2–. The preparation process, impedance behavior, and surface morphology of Cuhydroxide/oxide/MWCNTs/GCE were investigated by CV, electrochemical impedance spectroscopy, and scanning electron microscopy (SEM), respectively. The optimum preparation and test conditions for the electrode to have high catalytic activity were acquired. The linear range between the anodic current (Δia, µA) and NO2– concentration (c, mmol L−1) was 1.0 × 10−4 to 14.0 mmol L−1, and the corresponding calibration curve was Δia = −0.1504 + 57.954c (R = 0.9990, n = 32) with a detection limit of 0.03 µmol L−1 (S/N = 3). The Cuhydroxide/oxide/MWCNTs/GCE prepared in the optimal conditions showed good stability, high selectivity, low detection limit, and quick response (<0.2 s) to NO2– in phosphate buffer (pH 5.29) at 0.78 V, which has been successfully applied to the determination of NO2– in pickled vegetables with satisfactory results.

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