Polypyrrole with a functionalized multi-walled carbon nanotube hybrid nanocomposite: a new and efficient nitrite sensor

2018 ◽  
Vol 42 (5) ◽  
pp. 3748-3757 ◽  
Author(s):  
Abraham Daniel Arulraj ◽  
Ellairaja Sundaram ◽  
Vairathevar Sivasamy Vasantha ◽  
Bernaurdshaw Neppolian
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Sodium Dodecyl Sulfate ◽  
Conducting Polymers ◽  
Sodium Dodecyl ◽  
Hybrid Nanocomposite ◽  
Multi Walled Carbon Nanotube ◽  
Dodecyl Sulfate ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

This study mainly focuses on the electrochemical-assisted synthesis of conducting polymers such as polypyrrole (PPy) with sodium dodecyl sulfate (SDS) as a surfactant and supported with functionalized multi-walled carbon nanotubes (f-MWCNTs).

scholarly journals Electrochemical determination of tyrosine in the presence of uric acid at a carbon paste electrode modified with multi-walled carbon nanotubes enhanced by sodium dodecyl sulfate

2012 ◽  
Vol 10 (6) ◽  
pp. 1824-1829 ◽  
Author(s):  
Sayed Ghoreishi ◽  
Mohsen Behpour ◽  
Mona Delshad ◽  
Asma Khoobi
Keyword(s):  
Carbon Nanotubes ◽  
Uric Acid ◽  
Sodium Dodecyl Sulfate ◽  
Carbon Paste Electrode ◽  
Sodium Dodecyl ◽  
Carbon Paste ◽  
Dodecyl Sulfate ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Paste Electrode

AbstractTyrosine (Tyr) was quantitated with high sensitivity and selectivity in the presence of uric acid (UA) using a carbon paste electrode modified with multi-walled carbon nanotubes. Tyr and UA were catalytically oxidized with diffusion-controlled characteristics. They were determined simultaneously by differential pulse voltammetry with a potential difference of 350 mV. The electrocatalytic currents increase linearly with Tyr and UA concentrations 4×10−7−1×10−4 M and 3×10−7−2×10−4 M. Their detection limits were 1×10−7 and 5.1×10−8 M respectively. In the presence of sodium dodecyl sulfate the Tyr detection limit improved from 1×10−7 to 6.9×10−8 M. The electrode was successfully used to quantitate Tyr and UA in serum.

Highly sensitive compression sensors using three-dimensional printed polydimethylsiloxane/carbon nanotube nanocomposites

2019 ◽  
Vol 30 (8) ◽  
pp. 1216-1224 ◽  
Author(s):  
Mohammad Charara ◽  
Mohammad Abshirini ◽  
Mrinal C Saha ◽  
M Cengiz Altan ◽  
Yingtao Liu
Keyword(s):  
Carbon Nanotubes ◽  
Electron Microscope ◽  
Carbon Nanotube ◽  
Scanning Electron Microscope ◽  
Three Dimensional ◽  
Multi Walled Carbon Nanotube ◽  
Highly Sensitive ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Scanning Electron

This article presents three-dimensional printed and highly sensitive polydimethylsiloxane/multi-walled carbon nanotube sensors for compressive strain and pressure measurements. An electrically conductive polydimethylsiloxane/multi-walled carbon nanotube nanocomposite is developed to three-dimensional print compression sensors in a freestanding and layer-by-layer manner. The dispersion of multi-walled carbon nanotubes in polydimethylsiloxane allows the uncured nanocomposite to stand freely without any support throughout the printing process. The cross section of the compression sensors is examined under scanning electron microscope to identify the microstructure of nanocomposites, revealing good dispersion of multi-walled carbon nanotubes within the polydimethylsiloxane matrix. The sensor’s sensitivity was characterized under cyclic compression loading at various max strains, showing an especially high sensitivity at lower strains. The sensing capability of the three-dimensional printed nanocomposites shows minimum variation at various applied strain rates, indicating its versatile potential in a wide range of applications. Cyclic tests under compressive loading for over 8 h demonstrate that the long-term sensing performance is consistent. Finally, in situ micromechanical compressive tests under scanning electron microscope validated the sensor’s piezoresistive mechanism, showing the rearrangement, reorientation, and bending of the multi-walled carbon nanotubes under compressive loads, were the main reasons that lead to the piezoresistive sensing capabilities in the three-dimensional printed nanocomposites.

Self-assembly fabrication of a graphene/multi-walled carbon nanotube hybrid material for suppressing potential heat radiation and toxic effluent

RSC Advances ◽  
2015 ◽  
Vol 5 (125) ◽  
pp. 103365-103372 ◽  
Author(s):  
Lei Liu ◽  
Dong Wang ◽  
Yuan Hu
Keyword(s):  
Carbon Nanotubes ◽  
Aqueous Solution ◽  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Hybrid Material ◽  
Self Assembly ◽  
Heat Radiation ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Negative graphene oxide was combined with positive chitosan-modified multi-walled carbon nanotubes in aqueous solution and then thermally reduced to fabricate a multi-walled carbon nanotube/graphene (MWCNT/G) hybrid material.

Single Walled Carbon Nanotube Assisted Thermal Sensor

2014 ◽  
Vol 1752 ◽  
pp. 111-116
Author(s):  
S. Chandrasekar ◽  
K.S.V. Santhanam ◽  
Y. Yue ◽  
K. Kalaiazagan ◽  
L. Fuller
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Sodium Dodecyl Sulfate ◽  
Electrical Resistance ◽  
Methylene Chloride ◽  
Active Material ◽  
Sodium Dodecyl ◽  
Thermal Sensor ◽  
Single Walled Carbon ◽  
Dodecyl Sulfate

ABSTRACTA nano thermal sensor was made by depositing carbon nanotubes from a medium containing a) methylene chloride b)sodium dodecyl sulfate and c) Baytron-P (polymer) assisted sodium dodecyl sulfate. The nano thermal sensors showed d.c. electrical resistance as independent of temperature when the sensors were made by procedures (a) or (b). The electrical resistivity in both the situations has been independent of temperature. When the nanosensor is made with carbon nanotubes by assisted method (c), the d.c. electrical resistance decreased with temperature. The negative temperature coefficient (TCR) is manifested in the semiconducting property of the active material. The sensor behavior is reproducible and varies linearly with temperature. The nanosensor made by non assisted carbon nanotube showed zero TCR. This is probably the first instance of assisted thermal sensor made with single walled carbon nanotubes.

The “click-on-tube” approach for the production of efficient drug carriers based on oxidized multi-walled carbon nanotubes

2016 ◽  
Vol 4 (21) ◽  
pp. 3823-3831 ◽  
Author(s):  
Stefano Fedeli ◽  
Alberto Brandi ◽  
Lorenzo Venturini ◽  
Paola Chiarugi ◽  
Elisa Giannoni ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Drug Delivery ◽  
Carbon Nanotube ◽  
Drug Delivery System ◽  
Delivery System ◽  
Drug Carriers ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Straightforward Approach

An efficient drug delivery system through a straightforward approach to multi-walled carbon nanotube decoration.

scholarly journals Coordination matrix/signal amplifier strategy for simultaneous electrochemical determination of cadmium(ii), lead(ii), copper(ii), and mercury(ii) ions based on polyfurfural film/multi-walled carbon nanotube modified electrode

RSC Advances ◽  
2017 ◽  
Vol 7 (45) ◽  
pp. 28556-28563 ◽  
Author(s):  
Jianzhi Huang ◽  
Silan Bai ◽  
Guoqing Yue ◽  
Wenxue Cheng ◽  
Lishi Wang
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Modified Electrode ◽  
Electrochemical Determination ◽  
Multi Walled Carbon Nanotube ◽  
Signal Amplifier ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Coordination matrix/signal amplifier strategy for simultaneous electrochemical determination of cadmium(ii), lead(ii), copper(ii) and mercury(ii) ions based on polyfurfural film/multi-walled carbon nanotubes modified electrode.

Multi-walled carbon nanotubes composited with nanomagnetite for anodes in lithium ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 7237-7244 ◽  
Author(s):  
Xiaoyu Li ◽  
Hongbo Gu ◽  
Jiurong Liu ◽  
Huige Wei ◽  
Song Qiu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Lithium Ion ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes ◽  
20 Nm ◽  
Walled Carbon Nanotubes ◽  
Annealing Method

The multi-walled carbon nanotube (MWNT) nanocomposites with homogenously anchored nanomagnetite of 10–20 nm prepared by a hydrothermal-annealing method exhibit excellent performances as anode materials for lithium ion batteries.

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