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In this study, nitrogen-rich carbon dots decorated graphene oxide (N-Cdots/GO) hybrid, as a metal-free electrocatalyst for oxygen reduction reaction (ORR), is synthesized by a facile and low-cost hydrothermal treatment for the first time. Specifically, as a nitrogen-rich bridge-molecule, urea can trap free citric acid on planar planes, edges, and wrinkle sections of GO through amidation reaction in...
Enzymatic biofuel cells offer the exciting prospect of clean energy production for implantable devices, but such devices are still exotic and require improvements in electrode design and performance. Here a global strategy to prepare robust and versatile buckypaper bioelectrodes for advancing biofuel cell applications is presented. The fabrication method is based on a combination of original bifunctional...
In this work, for the first time, an efficient carbon quantum dots/gold nanoclusters (CQDs/AuNCs) nanohybrid based ratiometric fluorescent probe for sensitive and selective sensing of cadmium (II) ions and l-ascorbic acid (AA) has been established. The blue emissive CQDs, prepared by a one-step hydrothermal treatment with alanine and histidine, play the role of reference fluorophore. The red emissive...
Owing to their conductivity, carbon nanotubes (CNTs) coatings are widely used for modifying electrode surfaces. In particular, the formation of bucky papers (BP) based on CNT assemblies obtained by filtration, represents an attractive way of creating a new kind of electrode. However, these BP are brittle and difficult to manipulate, hence their applications remain limited due to their fragility and...
Nanosized fibers containing carbon nanotube (CNT) were produced by electrospinning from a DMF solution containing CNT and polyacrilonitrile (PAN). The resulting fibers form a felt like fiber tissue that was used as an electrode. The nitrile groups of these fibers were chemically reduced to amines groups that were protonated at pH 5. The resulting positively charged nanofibers swell in aqueous solutions...
Iron particle impurities of HiPCO® single-walled carbon nanotubes (SWCNTs) are treated as undesirable moieties and considerable times and efforts is allocated towards research and development to reduce their amount in HiPCO® SWCNTs. Taking advantage of this impurity, 3D nanostructured scaffolds are built via layer by layer (LBL) deposition of HiPCO® SWCNTs and magnetic nanoparticles which are retained...
We report a novel strategy for controlled nanostructuring of electrodes surfaces using single-walled nanotubes and nanodiamonds in order to form highly porous structures for biosensors applications. These nanostructures were obtained by subsequent deposition of nanotubes and nanodiamonds followed by functionalization of this assembly with pyrenenitrilotriacteic acid (NTA) via dip coating. The electropolymerizaton...
The design of nanostructured biological architectures based on host–guest interactions between β-cyclodextrin and adamantane was investigated on SWCNT coatings using glucose oxidase (GOX) as biomolecule model. β-Cyclodextrin tagged GOX was immobilized on adamantane functionalized carbon nanotubes, deposited on platinum electrodes. Different functionalization techniques to attach “pyrene adamantane”...
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