Robust cobalt perforated with multi-walled carbon nanotubes as an effective sensing material for acetone detection

2018 ◽  
Vol 5 (10) ◽  
pp. 2563-2570 ◽  
Author(s):  
Rui Zhang ◽  
Ming Zhang ◽  
Tingting Zhou ◽  
Tong Zhang
Keyword(s):  
Carbon Nanotubes ◽  
Working Temperature ◽  
Response Recovery ◽  
Sensing Material ◽  
Sensing Platform ◽  
Multi Walled Carbon Nanotubes ◽  
Acetone Detection ◽  
Walled Carbon Nanotubes

A robust Co3O4-decorated MWCNT-based sensing platform exhibits selective response/recovery acetone behavior at a low working temperature of 120 °C.

Selective Sensing Platform Utilizing Graphitized Multi-Walled Carbon Nanotubes for Monitoring of Ondansetron and Paracetamol

2020 ◽  
Vol 16 ◽  
Author(s):  
Biljana Nigović ◽  
Iva Šimunić ◽  
Ana Mornar
Keyword(s):  
Carbon Nanotubes ◽  
Cation Exchange ◽  
Supporting Electrolyte ◽  
Polymer Concentration ◽  
Fixed Dose ◽  
Sensing Platform ◽  
Multi Walled Carbon Nanotubes ◽  
Electroanalytical Method ◽  
Walled Carbon Nanotubes

Background: Ondansetron and paracetamol are often co-administrated to prevent and treat nausea and vomiting caused by anaesthesia and to control of postoperative pain. In addition, ondansetron is used as the first-line antiemetic in paracetamol overdose. Therefore, selective and sensitive method for their simultaneous analysis is of a great importance. The electroanalytical methods are highly sensitive and offer many possibilities for new sensor platform design. However, at present, no electroanalytical method for simultaneous determination of these drugs has been proposed. Objective: The aim of this study was to develop a novel nanosensor for selective monitoring of ondansetron and paracetamol in pharmaceutical and biological samples without expensive and time-consuming pretreatments. Methods: The graphitized multi-walled carbon nanotubes embedded in a cation exchange polymer matrix was selected, among various surface functionalizations evaluated, to design novel sensor. Based on its excellent sensing performance, the first electroanalytical method was developed for rapid concurrent determination of investigated drugs. Results: The scanning electron microscopy study showed interlinked nanoporous network structure and highly enlarged active surface. The developed sensor facilitated electron transfer in the oxidation of both drugs and tremendously enhanced the adsorption capacity for ondasetron, thus exhibiting significant increase of drug responses and sensitivity. To obtain much sensitive response of investigated drugs the effect of pH values of supporting electrolyte, dispersed nanomaterial amount, the cation exchange polymer concentration, drop-casting volume of nanocomposite suspension, accumulation potential and deposition time on the peak current was evaluated. The developed electroanalytical method was validated and practical utility of the proposed nanosensor was tested. Conclusion: The developed sensor is promising sensing platform with a fast response time for analysis of ondansetron and paracetamol at very different concentration levels found in their fixed-dose combination and human serum sample after recommended daily doses showing its potential usage in pharmaceutical quality control and clinical research.

Mesoporous Pd@Pt core–shell nanoparticles supported on multi-walled carbon nanotubes as a sensing platform: application in simultaneous electrochemical detection of anticancer drugs doxorubicin and dasatinib

2019 ◽  
Vol 11 (4) ◽  
pp. 443-453 ◽  
Author(s):  
Pramod K. Kalambate ◽  
Yankai Li ◽  
Yue Shen ◽  
Yunhui Huang
Keyword(s):  
Carbon Nanotubes ◽  
Anticancer Drugs ◽  
Electrochemical Detection ◽  
Simultaneous Detection ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Sensing Platform ◽  
Multi Walled Carbon Nanotubes ◽  
Core Shell Nanoparticles ◽  
Walled Carbon Nanotubes

A novel electrochemical sensor based on Pd@Pt/MWCNT composite for simultaneous detection of doxorubicin and dasatinib.

scholarly journals Preserving Softness and Elastic Recovery in Silicone-Based Stretchable Electrodes Using Carbon Nanotubes

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1345 ◽  
Author(s):  
Andrey Bannych ◽  
Sari Katz ◽  
Zahava Barkay ◽  
Noa Lachman
Keyword(s):  
Carbon Nanotubes ◽  
Mechanical Characterization ◽  
Elastic Recovery ◽  
Morphological Data ◽  
Environmental Damage ◽  
Methyl Silicone ◽  
Wearable Electronics ◽  
Sensing Material ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Soft electronics based on various rubbers have lately been needed in many advanced applications such as soft robotics, wearable electronics, and remote health monitoring. The ability of a self-sensing material to be monitored in use provides a significant advantage. However, conductive fillers usually used to increase conductivity also change mechanical properties. Most importantly, the initial sought-after properties of rubber, namely softness and long elastic deformation, are usually compromised. This work presents full mechanical and electro-mechanical characterization, together with self-sensing abilities of a vinyl methyl silicone rubber (VMQ) and multi-walled carbon nanotubes (MWCNTs) composite, featuring conductivity while maintaining low hardness. The research demonstrates that MWCNT/VMQ with just 4 wt.% of MWCNT are as conductive as commercial conductive VMQ based on Carbon Black, while exhibiting lower hardness and higher elastic recovery (~20% plastic deformation, similar to pure rubber). The research also demonstrates piezo-resistivity and Raman-sensitivity, allowing for self-sensing. Using morphological data, proposed mechanisms for the superior electrical and mechanical behavior, as well as the in-situ fingerprint for the composite conditions are presented. This research novelty is in the full MWCNT/VMQ mechanical and electro-mechanical characterization, thus demonstrating its ability to serve as a sensor over large local strains, multiple straining cycles, and environmental damage.

Novel electrochemical sensing platform based on a molecularly imprinted polymer-decorated 3D-multi-walled carbon nanotube intercalated graphene aerogel for selective and sensitive detection of dopamine

2020 ◽  
Vol 12 (14) ◽  
pp. 1845-1851 ◽  
Author(s):  
Xue Ma ◽  
Feng Gao ◽  
Runying Dai ◽  
Guangbin Liu ◽  
Ying Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Molecularly Imprinted Polymer ◽  
Electrochemical Sensing ◽  
Imprinted Polymer ◽  
Graphene Aerogel ◽  
Molecularly Imprinted ◽  
Sensing Platform ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

A novel molecularly imprinted electrochemical sensor for detection of dopamine (DA) has been fabricated with multi-walled carbon nanotubes spaced graphene aerogels (MWCNTs/GAs) as sensing substrate and polypyrrole (PPy) as molecularly imprinted polymer (MIP).

Multi-Walled Carbon Nanotubes Functionalized with Carboxyl and Amide for Acetone detection at Room Temperature

2021 ◽  
Vol 317 ◽  
pp. 195-201
Author(s):  
Nurjahirah Janudin ◽  
Norli Abdullah ◽  
Faizah Md Yasin ◽  
Mohd Hanif Yaacob ◽  
Muhammad Zamharir Ahmad ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Response Time ◽  
Recovery Time ◽  
Room Temperature ◽  
Functional Group ◽  
Compositional Analysis ◽  
X Ray ◽  
Multi Walled Carbon Nanotubes ◽  
Acetone Detection ◽  
Walled Carbon Nanotubes

The functionalization of multi-walled carbon nanotubes (CNT) with amide group is reported as an alternative to enhance response time, recovery time and sensitivity of detecting acetone gas. We have fabricated an interdigitated transducer (IDT) deposited with amide-functionalized CNT. The elemental compositional analysis was characterized using Energy Dispersion X-ray spectroscopy and CHNOS elemental analyzer. The detection of acetone gas was performed in room temperature and digital multimeter was employed to record the changes of resistivity of IDT upon exposure of acetone. Results showed that amide functional group increases sensitivity, shortens the response time as well as recovery time of the sensor.

Polyethylenimine-Multi-Walled Carbon Nanotubes/Glassy Carbon Electrode as an Efficient Sensing Platform for Promethazine

2020 ◽  
Vol 167 (10) ◽  
pp. 107506
Author(s):  
Raissa C. de Oliveira ◽  
Camila P. Sousa ◽  
Simone Morais ◽  
Pedro de Lima-Neto ◽  
Adriana N. Correia
Keyword(s):  
Carbon Nanotubes ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Sensing Platform ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes
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