| 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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Krishnamurthy, Professor Satheesh
University of Surrey
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (24/24 displayed)
- 2024A comprehensive review on realization of self-cleaning surfaces by additive manufacturingcitations
- 2022Influence of Nanostructures in Perovskite Solar Cellscitations
- 2021Material dependent and temperature driven adsorption switching (p- to n- type) using CNT/ZnO composite-based chemiresistive methanol gas sensorcitations
- 2021Tin oxide for optoelectronic, photovoltaic and energy storage devices: a reviewcitations
- 2021Removal and Degradation of Mixed Dye Pollutants by Integrated Adsorption-Photocatalysis Technique Using 2-D MoS<sub>2</sub>/TiO<sub>2</sub> Nanocompositecitations
- 2020Solution Processed Pure Sulfide CZCTS Solar Cells with Efficiency 10.8% using Ultra-Thin CuO Intermediate Layercitations
- 2020Strength-ductility trade-off via SiC nanoparticle dispersion in A356 aluminium matrixcitations
- 2020Electro-deposited nano-webbed structures based on polyaniline/multi walled carbon nanotubes for enzymatic detection of organophosphatescitations
- 2019Continuous Hydrothermal Synthesis of Metal Germanates (M<sub>2</sub>GeO<sub>4</sub> ; M = Co, Mn, Zn) for High Capacity Negative Electrodes in Li‐ion Batteriescitations
- 2019Electrochemical micro analytical device interfaced with portable potentiostat for rapid detection of chlorpyrifos using acetylcholinesterase conjugated metal organic framework using Internet of thingscitations
- 2019Effects of Precursor Concentration in Solvent and Nanomaterials Room Temperature Aging on the Growth Morphology and Surface Characteristics of Ni–NiO Nanocatalysts Produced by Dendrites Combustion during SCScitations
- 2018Synthesis of MoS<sub>2</sub>-TiO<sub>2</sub> nanocomposite for enhanced photocatalytic and photoelectrochemical performance under visible light irradiationcitations
- 2017Tuning the properties of a black TiO<sub>2</sub>-Ag visible light photocatalyst produced by rapid one-pot chemical reductioncitations
- 2017Mediator-free interaction of glucose oxidase, as model enzyme for immobilization, with Al-doped and undoped ZnO thin films laser-deposited on polycarbonate supportscitations
- 2016Influence of Nanostructures in Perovskite Solar Cellscitations
- 2016Synthesis and characterisation of polyaniline (PAni) membranes for fuel cellcitations
- 2014Liquid phase pulsed laser ablation: a route to fabricate different carbon nanostructurescitations
- 2013Morphology-directed synthesis of ZnO nanostructures and their antibacterial activitycitations
- 2012Structural characterization of ZnO thin films grown on various substrates by pulsed laser depositioncitations
- 2011Resonant soft X-ray emission and X-ray absorption studies on Ga<sub>1-x</sub>Mn<sub>x</sub>N grown by pulsed laser depositioncitations
- 2010Transparent ultrathin conducting carbon filmscitations
- 2009Growth and characterisation of Al <sub>1-x</sub>Cr <sub>x</sub>N thin films by RF plasma assisted pulsed laser depositioncitations
- 2008High-yield production of graphene by liquid-phase exfoliation of graphitecitations
- 2008Growth of carbon nanotubes on Si substrate using Fe catalyst produced by pulsed laser deposition
Places of action
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article
Material dependent and temperature driven adsorption switching (p- to n- type) using CNT/ZnO composite-based chemiresistive methanol gas sensor
Abstract
The present study correlates two simultaneous as well as significant observations coming out from a single sensing prototype concerning the detection of volatile organic compounds (VOCs) by a carbonaceous material based sensor. We have developed a composite based chemiresistive sensor utilizing two different components (carbon nanotube (CNT) and zinc oxide (ZnO)). This is reflected in a unique adsorption switching phenomena followed by a ‘p- to n-’ type transition characteristics above a certain operating temperature (150 °C) in the VOC detection process. Noticeably, by the virtue of adsorption switching, the CNT/ZnO composite is able to operate as a dual mode sensor, in which CNT dominates in low temperature region (≤ 150 °C) and ZnO at high temperature region (>150 °C) with a realistic detection ability. The highly reproducible sensors (29 prototypes) are selective towards methanol (Response, R ∼ 73 ± 3 %) and shows 8-fold enhancement in response value compared to neighbouring VOC i.e., ethanol at an operating temperature of 150 °C with a very low bias voltage of 10 mV. Finally, the adsorption switching phenomena (physisorption to chemisorption) has been explained by Fourier Transform Infrared Spectroscopy (FTIR) study and activation energy values along with ‘p- to n-’ type transition is compared qualitatively with a typical full wave rectification process.