NDLI: Hollow microtubes made of carbon, boron and gold: novel semiconducting nanocomposite material for applications in electrochemistry and temperature sensing

Content Provider	Royal Society of Chemistry (RSC)
Author	Wadowska, M. Wybrańska, K. Prochowicz, D. Fiałkowski, M. Niedziółka-Jönsson, J. Dzięcielewski, I. Roźniecka, E. Hołyst, R. Paczesny, J. Malka, I. Zawal, P.
Copyright Year	2015
Abstract	Carbon based nanocomposites have recently been intensively investigated as a new class of functional hybrid materials. Here, we present a procedure to obtain a new nanocomposite material made of carbon, boron and gold for applications in electrochemistry and electronics. The presented fabrication protocol uses cellulose fibers as a template that is first modified with an inorganic nanocomposite material consisting of gold nanoparticles (AuNPs) embedded in a polyoxoborate matrix, and then is subjected to the process of thermal decomposition. The as obtained material has a form of tubes with a diameter of a couple of micrometers that are composed of carbonized cellulose coated with the polyoxoborate–AuNP nanocomposite. This inorganic shell, which covers the outer surface of the carbon microtubes, serves as a scaffold that makes the structure stable. The obtained material exhibits electrical properties of a semiconductor with the width of the band gap of about 0.6 eV, and forms Schottky contact with a metal electrode. We show that the new material is suitable for preparation of the NCT-type thermistor. We also demonstrate application of the new nanocomposite in electrochemistry for modification of the surface of a working electrode. Experiments carried out with three exemplary redox probes show that the electrochemical performance of the modified electrode depends greatly on the amount of AuNPs in the nanocomposite.
Starting Page	64083
Ending Page	64090
Page Count	8
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	5
Issue Number	79
Journal	RSC Advances
DOI	10.1039/c5ra12146a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Thermistor Semiconductor Electrode Cellulose Electronvolt Redox Carbon Composite material Boron Electrochemistry Nanocomposite Band gap Working electrode Schottky barrier
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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