scholarly journals Thiol-Amine Functionalized Decorated Carbon Nanotubes for Biomarker Gases Detection

Chemosensors ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 87
Author(s):  
Atef Thamri ◽  
Hamdi Baccar ◽  
Juan Casanova-Chafer ◽  
Moataz Billeh Mejri ◽  
Eduard Llobet ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Pt Nanoparticles ◽  
High Sensitivity ◽  
Metal Nanoparticle ◽  
Exhaled Breath ◽  
Self Assembled Monolayer ◽  
Sensitive Film ◽  
Multi Walled Carbon Nanotubes ◽  
Gas Molecules ◽  
Walled Carbon Nanotubes

Thousands of gas molecules are expelled in exhaled breath, and some of them can reveal diseases and metabolomic disorders. For that reason, the development of fast, inexpensive, and reliable sensing devices has been attracting growing interest. Here, we present the development of different chemoresistors based on multi-walled carbon nanotubes (MWCNTs) decorated with platinum (MWCNT/Pt) and palladium (MWCNT/Pt) nanoparticles and also functionalized with a self-assembled monolayer (SAM) of 11-amino-1-undecanethiol (Thiol-amine). The nanocomposites developed are a proof-of-concept to detect some biomarker molecules. Specifically, the capability to identify and measure different concentrations of volatile organic compounds (VOCs), either aromatic (toluene and benzene) and non-aromatic (ethanol and methanol) was assessed. As a result, this paper reports the significant differences in sensing performance achieved according to the metal nanoparticle used, and the high sensitivity obtained when SAMs are grown on the sensitive film, acting as a receptor for biomarker vapours.

A novel strategy for the synthesis of sulfur-doped carbon nanotubes as a highly efficient Pt catalyst support toward the methanol oxidation reaction

2017 ◽  
Vol 5 (36) ◽  
pp. 19467-19475 ◽  
Author(s):  
Jing-Jing Fan ◽  
You-Jun Fan ◽  
Rui-Xiang Wang ◽  
Sheng Xiang ◽  
Hua-Guo Tang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxidation Reaction ◽  
Catalyst Support ◽  
Pt Nanoparticles ◽  
Pt Catalyst ◽  
Methanol Oxidation Reaction ◽  
Multi Walled Carbon Nanotubes ◽  
Novel Strategy ◽  
Walled Carbon Nanotubes ◽  
Functionalized Mwcnts

Sulfur-doped multi-walled carbon nanotubes (S-MWCNTs) derived from PEDOT-functionalized MWCNTs can significantly improve the dispersion of supported Pt nanoparticles and enhance their electrocatalytic performance for the MOR.

A highly sensitive glucose sensor based on a gold nanoparticles/polyaniline/multi-walled carbon nanotubes composite modified glassy carbon electrode

2018 ◽  
Vol 42 (14) ◽  
pp. 11944-11953 ◽  
Author(s):  
Xinping Zeng ◽  
Yazhou Zhang ◽  
Xiling Du ◽  
Yanfei Li ◽  
Wenwei Tang
Keyword(s):  
Carbon Nanotubes ◽  
Gold Nanoparticles ◽  
Glucose Sensor ◽  
High Sensitivity ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Highly Sensitive ◽  
Multi Walled Carbon Nanotubes ◽  
Application Potential ◽  
Walled Carbon Nanotubes

The PTFE/GOx/AuNPs/PANI/MWCNTs/GCE glucose sensor possesses wide linear range, low detection limit, high sensitivity, which can measure the glucose in human serum and holds application potential.

Ultra-small metal nanoparticles supported on carbon nanotubes through surface chelation and hydrogen plasma reduction for methanol electro-oxidation

2019 ◽  
Vol 7 (42) ◽  
pp. 24502-24514
Author(s):  
Francisco Morales-Lara ◽  
Víctor K. Abdelkader-Fernández ◽  
Manuel Melguizo ◽  
Antonio Turco ◽  
Elisabetta Mazzotta ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Metal Nanoparticles ◽  
Hydrogen Plasma ◽  
Pt Nanoparticles ◽  
New Method ◽  
Multi Walled Carbon Nanotubes ◽  
Electro Oxidation ◽  
Walled Carbon Nanotubes ◽  
Plasma Reduction

This paper reports a new method to obtain ultra-small Pd and Pt nanoparticles (0.5–1 nm) supported on multi-walled carbon nanotubes (MWCNTs).

Langmuir-Blodgett Film of Multi-Walled Carbon Nanotubes for Hydrogen Sensor on Paper

2015 ◽  
Vol 754-755 ◽  
pp. 1146-1150
Author(s):  
Muhammad Mahyiddin Ramli ◽  
Siti Salwa Mat Isa ◽  
Mohd Nazrin Md Isa ◽  
Shahrir Rizal Kasjoo ◽  
Simon J. Henley
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Sensor ◽  
Pd Nanoparticles ◽  
Paper Substrate ◽  
Blodgett Film ◽  
Langmuir Blodgett ◽  
Multi Walled Carbon Nanotubes ◽  
Gas Molecules ◽  
Walled Carbon Nanotubes ◽  
Functionalized Mwcnts

Langmuir-Blodgett technique was applied to build optically homogeneous film of functionalized multi-walled carbon nanotubes (MWCNTs) on paper substrate. The palladium (Pd) nanoparticles were drop-casted onto MWCNTs network films before being exposed in hydrogen (H2) gas molecules environment under vacuum and atmospheric pressure at room temperature. The results demonstrate that the functionalized MWCNTs dispersed with Pd nanoparticles show good H2sensing response on paper substrate where the sensitivity of around 10 % was recorded at only 2 minutes exposure time.

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