Oxygen biosensor based on carbon nanotubes directly grown on graphitic substrate

Żelechowska, Kamila; Trawiński, Bartosz; Dramińska, Sylwia; Majdecka, Dominika; Bilewicz, Renata; Kusz, B.

doi:10.1016/j.snb.2016.09.081

Cited by 24 publications

(9 citation statements)

References 24 publications

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“…Depending on building material, strength of the bonds between forming particles/rods/sheets and presence of the dopants in the porous matrix, aerogels can be applied as adsorbents [2], filters [3], catalysts [4,5] or sensors [5,6]. Among the others, graphene oxide (GO) is one of the most interesting building materials for aerogel structures [7], which thanks to the high specific surface area and threedimensional structure can be applied as electrodes in supercapacitors [8,9].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of partially reduced graphene oxide aerogels doped with transition metal ions

et al. 2018

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This work presents the preparation and characterization of pristine and transition metal doped partially reduced graphene oxide aerogels. The step-by-step preparation of aerogels from graphene oxide with an assistance of VCl 3 , CrCl 3 , FeCl 2 Á4H 2 O, CoCl 2 , NiCl 2 and CuCl 2 chlorides as reducing agents is shown and explained. The influence of reducing agents on the structural and magnetic properties of prepared aerogels is investigated. The use of electron paramagnetic resonance in purification during synthesis of GO and characterization afterwards is shown. It was found that VCl 3 was the strongest reducing agent leading to the formation of the most dense reduced graphene oxide aerogel, whereas vanadium is visible in EPR spectrum in form of V 4? complex as a VO 2?groups.

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of partially reduced graphene oxide aerogels doped with transition metal ions

et al. 2018

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“…screen printed electrodes based on glassy carbon or graphite powder) which can be easily mass‐produced and applied. Otherwise, a conventional alternative to improve reproducibility and accessible range of potentials is by the modification of their electrode surfaces with CNMs . For example, it is reported the direct growth of a CNT electrode on a polydimethyslsiloxane/glass based microfluidic chip for the electrochemical sensing of cholesterol .…”

Section: Strategies To Bio‐functionalized Nc‐cpesmentioning

confidence: 99%

Customized Bio‐functionalization of Nanocomposite Carbon Paste Electrodes for Electrochemical Sensing: A Mini Review

Muñoz

Baeza

2017

Electroanalysis

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Over the past few decades, the (bio)functionalization of carbon nanomaterials (CNMs), such as nanohorns, carbon nanotubes, graphene, graphite and related with a wide range of (bio)modifiers have been extensively studied for their incorporation on different pure metal or carbon electrode surfaces via drop‐casting. However, CNMs are also shown to be important functional additives for polymers, having great potential to produce rigid nanocomposite materials with a range of enhanced properties, including mechanical, optical, electrical, thermal and electrochemical. The high malleability derived from the host polymer allows alternative strategies that can be carried out in order to incorporate different types of (bio)modifiers in/on/into a polymeric nanocomposite electrode. Accordingly, this mini review overviews the main methodologies used for the bio‐functionalization of electrochemical transducers based on nanocomposite carbon paste electrodes (NC‐CPEs). Additionally, the most extensively (bio)modifiers used in electrochemical (bio)sensing, together with their various electrocatalytical performance are also discussed, fact that might serve as a general outlook for planning further research.

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“…[9] An alternative biocatalyst, bilirubin axidase, which also belongs to the multicopper family was immobilized on CNT forests using diazonium grafted naphthalene to obtain a performing oxygen biosensor. [10] Kihara et al transferred CNT forests to glassy carbon electrodes before studying the immobilization and wiring of hydrogenase. [11] An original approach was presented by Kwon et al [12] who used CNT forests to form yarns with entrapped enzymes using a biscrolling method and formed a biofuel cell textile design.…”

Section: Introductionmentioning

confidence: 99%

“…[15] An alternative approach was proposed by Żelechowska et al with direct growth of curly CNT forests on graphite. [10] After removal of catalysts with nitric acid, these CNT layers were covalently functionalized with naphthalene using the diazonium strategy to immobilize the enzyme bilirubin oxidase. The obtained electrochemical oxygen biosensors revealed direct electron transfer with the enzyme.…”

Section: Introductionmentioning

confidence: 99%

Functionalization of Contacted Carbon Nanotube Forests by Dip Coating for High‐Performance Biocathodes

et al. 2020

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This work focuses on the use of electrically contacted carbon nanotube forests as an electrode material for the bioelectrocatalytic reduction of oxygen to water. The forests are directly grown by chemical vapor deposition on a conductive tantalum layer, which provides enough mechanic stability during several functionalization and enzyme immobilization steps. A pyrene bis-anthraquinone derivative (pyr-(AQ) 2) was attached via πstacking throughout the forest and was used as an anchor molecule for oriented immobilization of laccase. This led to high-performance biocathodes for oxygen reduction via direct electron transfer with absolute maximum current densities up to 0.84 mA cm À 2 at 0.2 V vs Ag/AgCl. The morphological changes during the wet chemical processes were studied by scanning electron microscopy (SEM) revealing cellular patterning of the forest structure. Despite these changes, the forest remained attached and electrically connected to the tantalum layer. The resulting bioelectrodes performed with satisfying stabilities under constant discharge conditions and kept 75 % of its initial performances after one week.

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Oxygen biosensor based on carbon nanotubes directly grown on graphitic substrate

Cited by 24 publications

References 24 publications

Preparation and characterization of partially reduced graphene oxide aerogels doped with transition metal ions

Preparation and characterization of partially reduced graphene oxide aerogels doped with transition metal ions

Customized Bio‐functionalization of Nanocomposite Carbon Paste Electrodes for Electrochemical Sensing: A Mini Review

Functionalization of Contacted Carbon Nanotube Forests by Dip Coating for High‐Performance Biocathodes

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