| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Pichler, Thomas
University of Vienna
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2024Temperature dependence of the Raman spectrum of orthorhombic Bi2Se3
- 2022Highly Sensitive and Selective Formaldehyde Gas Sensors Based on Polyvinylpyrrolidone/Nitrogen-Doped Double-Walled Carbon Nanotubescitations
- 2022Momentum-Dependent Oscillator Strength Crossover of Excitons and Plasmons in Two- Dimensional PtSe2citations
- 2022Momentum-Dependent Oscillator Strength Crossover of Excitons and Plasmons in Two-Dimensional PtSe 2citations
- 2022Molybdenum Release Triggered by Dolomite Dissolutioncitations
- 2021Photothermal synthesis of confined carbynecitations
- 2021In-situ laser annealing as pathway for the metal freesynthesis of tailored nanographenes
- 2021Deciphering the Intense Postgap Absorptions of Monolayer Transition Metal Dichalcogenidescitations
- 2020Ultralong Spin Lifetime in Light Alkali Atom Doped Graphenecitations
- 2019Towards controllable inner chirality in double-walled carbon nanotubescitations
- 2019Metal-Organic Framework Co-MOF-74-Based Host-Guest Composites for Resistive Gas Sensingcitations
- 2019Carbon Nanostructures in Cancer Diagnosis and Therapy
- 2019Position and momentum mapping of vibrations in graphene nanostructurescitations
- 2018Measurement of Optical Excitations in Low-Dimensional Materials by Using a Monochromated Electron Sourcecitations
- 2018Fermi level engineering of metallicity-sorted metallic single-walled carbon nanotubes by encapsulation of few-atom-thick crystals of silver chloridecitations
- 2016Environmental control of electron-phonon coupling in barium doped graphenecitations
- 2016Disentangling Vacancy Oxidation on Metallicity-Sorted Carbon Nanotubescitations
- 2015Atomically precise semiconductor-graphene and hBN interfaces by Ge intercalationcitations
- 2014Raman spectroscopy of graphite intercalation compounds: Charge transfer, strain, and electron–phonon coupling in graphene layerscitations
- 2014Raman spectroscopy of graphite intercalation compoundscitations
- 2014Raman spectroscopy of graphite intercalation compounds ; charge transfer, strain, and electron-phonon coupling in graphene layers
- 2013Manifestation of charged and strained graphene layers in the Raman response of graphite intercalation compounds.citations
- 2013Manifestation of Charged and Strained Graphene Layers in the Raman Response of Graphite Intercalation Compoundscitations
- 2013Hybrid Carbon Nanotube Networks as Efficient Hole Extraction Layers for Organic Photovoltaicscitations
- 2011Nitrogen-Doped Single-Walled Carbon Nanotube Thin Films Exhibiting Anomalous Sheet Resistancescitations
- 2011Nanochemical reactions by laser annealing of ferrocene filled single-walled carbon nanotubescitations
- 2010Evidence for substitutional boron in doped single-walled carbon nanotubescitations
- 2009Carbon nanotube synthesis via ceramic catalystscitations
- 2008Tight-binding description of the quasiparticle dispersion of graphite and few-layer graphenecitations
- 2008A one step approach to B-doped single-walled carbon nanotubescitations
- 2006High quality double wall carbon nanotubes with a defined diameter distribution by chemical vapor deposition from alcoholcitations
- 2004Low temperature fullerene encapsulation in single wall carbon nanotubes: Synthesis of N@C60@SWCNTcitations
Places of action
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article
Highly Sensitive and Selective Formaldehyde Gas Sensors Based on Polyvinylpyrrolidone/Nitrogen-Doped Double-Walled Carbon Nanotubes
Abstract
A highly sensitive and selective formaldehyde sensor was successfully fabricated using hybrid materials of nitrogen-doped double-walled carbon nanotubes (N-DWCNTs) and polyvinylpyrrolidone (PVP). Double-walled carbon nanotubes (DWCNTs) and N-DWCNTs were produced by high-vacuum chemical vapor deposition using ethanol and benzylamine, respectively. Purified DWCNTs and N-DWCNTs were dropped separately onto the sensing substrate. PVP was then dropped onto pre-dropped DWCNT and N-DWCNTs (hereafter referred to as PVP/DWCNTs and PVP/N-DWCNTs, respectively). As-fabricated sensors were used to find 1,2-dichloroethane, dichloromethane, formaldehyde and toluene vapors in parts per million (ppm) at room temperature for detection measurement. The sensor response of N-DWCNTs, PVP/DWCNTs and PVP/N-DWCNTs sensors show a high response to formaldehyde but a low response to 1,2-dichloroethane, dichloromethane and toluene. Remarkably, PVP/N-DWCNTs sensors respond sensitively and selectively towards formaldehyde vapor, which is 15 times higher than when using DWCNTs sensors. This improvement could be attributed to the synergistic effect of the polymer swelling and nitrogen-sites in the N-DWCNTs. The limit of detection (LOD) of PVP/N-DWCNTs was 15 ppm, which is 34-fold higher than when using DWCNTs with a LOD of 506 ppm. This study demonstrated the high sensitivity and selectivity for formaldehyde-sensing applications of high-performance PVP/N-DWCNTs hybrid materials.