Journal ArticleDOI
Carbon nanotube-ionic liquid composite sensors and biosensors.
Roohollah Torabi Kachoosangi,Mustafa M. Musameh,Imad A. Abu-Yousef,Jumana M. Yousef,Sofian M. Kanan,Lei Xiao,Stephen G. Davies,Angela J. Russell,Richard G. Compton +8 more
TLDR
The new composite electrode showed good activity toward hydrogen peroxide and NADH, with the possibility of fabricating a sensitive biosensor for glucose and alcohol using glucose oxidase and alcohol dehydrogenase, respectively, by simply incorporating the specific enzyme within the composite matrix.Abstract:
A new composite electrode has been fabricated using multiwall carbon nanotubes (MWCNT) and the ionic liquid n-octylpyridinum hexafluorophosphate (OPFP). This electrode shows very attractive electrochemical performances compared to other conventional electrodes using graphite and mineral oil, notably improved sensitivity and stability. One major advantage of this electrode compared to other electrodes using carbon nanotubes and other ionic liquids is its extremely low capacitance and background currents. A 10% (w/w) loading of MWCNT was selected as the optimal composition based on voltammetric results, as well as the stability of the background response in solution. The new composite electrode showed good activity toward hydrogen peroxide and NADH, with the possibility of fabricating a sensitive biosensor for glucose and alcohol using glucose oxidase and alcohol dehydrogenase, respectively, by simply incorporating the specific enzyme within the composite matrix. The marked electrode stability and antifouling features toward NADH oxidation was much higher for this composite compared to a bare glassy carbon electrode. While a loading of 2% MWCNT showed very poor electrochemical behavior, a large enhancement was observed upon gentle heating to 70 degrees C, which gave a response similar to the optimum composition of 10%. The ease of preparation, low background current, high sensitivity, stability, and small loading of nanotubes using this composite can create new novel avenues and applications for fabricating robust sensors and biosensors for many important species.read more
Citations
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Journal ArticleDOI
Carbon Nanomaterials in Biosensors: Should You Use Nanotubes or Graphene?
TL;DR: This Review explores issues by presenting the latest advances in electrochemical, electrical, and optical biosensors that use carbon nanotubes and graphene, and critically compares the performance of the two carbon allotropes in this application.
Journal ArticleDOI
Ionic Liquids and Their Interaction with Cellulose
TL;DR: This review aims to provide a summary of the current state of knowledge on the structural features of wood and introduces a new class of solvents, called ionic liquids, which have many attractive properties, including chemical and thermal stability, nonflammability, and immeasurably low vapor pressure.
Journal ArticleDOI
Recent advances in electrochemical sensing for hydrogen peroxide: a review
TL;DR: In this article, the electrocatalytic H(2)O( 2) determinations are mainly focused on because they can provide a superior sensing performance over non-electrocatalysttic ones.
Journal ArticleDOI
New frontiers in materials science opened by ionic liquids.
TL;DR: Recent studies on ILs that are employed as functional advanced materials, advanced mediums for materials production, and components for preparing highly functional materials are reviewed.
Journal ArticleDOI
Platinum nanoparticle ensemble-on-graphene hybrid nanosheet: one-pot, rapid synthesis, and used as new electrode material for electrochemical sensing.
TL;DR: It is found that PNEGHNs modified GCE shows a wide linear range and low detection limit for H2O2 and TNT detection, and may be an attractive robust and advanced hybrid electrode material with great promise for electrochemical sensors and biosensors design.
References
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Journal ArticleDOI
Carbon Nanotubes--the Route Toward Applications
TL;DR: Many potential applications have been proposed for carbon nanotubes, including conductive and high-strength composites; energy storage and energy conversion devices; sensors; field emission displays and radiation sources; hydrogen storage media; and nanometer-sized semiconductor devices, probes, and interconnects.
Journal ArticleDOI
Characterization and comparison of hydrophilic and hydrophobic room temperature ionic liquids incorporating the imidazolium cation
Jonathan G. Huddleston,Ann E. Visser,W. Matthew Reichert,Heather D. Willauer,Grant A. Broker,Robin D. Rogers +5 more
TL;DR: A series of hydrophilic and hydrophobic 1-alkyl-3-methylimidazolium room temperature ionic liquids (RTILs) have been prepared and characterized to determine how water content, density, viscosity, surface tension, melting point, and thermal stability are affected by changes in alkyl chain length and anion.
Journal ArticleDOI
Ionic Liquids for Clean Technology
TL;DR: The use of room-temperature chloroaluminate(III) ionic liquids as solvents for clean synthesis and catalytic processes, particularly those applicable to clean technology, is becoming widely recognised and accepted as mentioned in this paper.
Journal ArticleDOI
Non-Haloaluminate Room-Temperature Ionic Liquids in Electrochemistry—A Review
TL;DR: An examination of the pertinent properties of ionic liquids is presented, followed by an assessment of their application to date across the various electrochemical disciplines, concluding with an outlook viewing current problems and directions.
Journal ArticleDOI
Low-potential stable NADH detection at carbon-nanotube-modified glassy carbon electrodes
TL;DR: Carbon-nanotube (CNT)-modified glassy carbon electrodes exhibiting strong and stable electrocatalytic response toward NADH are described in this article, where a substantial (490 mV) decrease in the overvoltage of the NADH oxidation reaction (compared to ordinary carbon electrodes) is observed using single-wall and multi-wall carbon nanotube coatings, with oxidation starting at ca. − 0.05 V (vs. Ag/AgCl; pH 7.4).
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