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Ultrasensitive H2S ...
Ultrasensitive H2S gas sensors based on p-type WS2 hybrid materials
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- Asres, Georgies Alene (författare)
- Univ Oulu, Finland
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- Baldoví, José J. (författare)
- Max Planck Inst Struct and Dynam Matter, Germany; Univ Basque Country, Spain
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- Dombovari, Aron (författare)
- Univ Oulu, Finland
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- Järvinen, Topias (författare)
- Univ Oulu, Finland
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- Lorite, Gabriela Simone (författare)
- Univ Oulu, Finland
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- Mohl, Melinda (författare)
- Univ Oulu, Finland
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- Shchukarev, Andrey (författare)
- Umeå universitet,Kemiska institutionen,Umea Univ, Sweden
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- Pérez Paz, Alejandro (författare)
- Univ Basque Country, Spain; Yachay Tech Univ, Ecuador
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- Xian, Lede (författare)
- Max Planck Inst Struct and Dynam Matter, Germany; Univ Basque Country, Spain
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- Mikkola, Jyri-Pekka (författare)
- Umeå universitet,Kemiska institutionen,Industrial Chemistry & Reaction Engineering, Department of Chemical Engineering, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Åbo-Turku, Finland,Umea Univ, Sweden; Abo Akad Univ, Finland
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- Lloyd Spetz, Anita (författare)
- Linköpings universitet,Sensor- och aktuatorsystem,Tekniska fakulteten,Univ Oulu, Finland
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- Jantunen, Heli (författare)
- Univ Oulu, Finland
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- Rubio, Ángel (författare)
- Max Planck Inst Struct and Dynam Matter, Germany; Univ Basque Country, Spain
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- Kordás, Krisztian (författare)
- Univ Oulu, Finland
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(creator_code:org_t)
- 2018-02-20
- 2018
- Engelska.
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Ingår i: Nano Reseach. - : Springer. - 1998-0124 .- 1998-0000. ; 11:8, s. 4215-4224
- Relaterad länk:
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https://doi.org/10.1...
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https://umu.diva-por... (primary) (Raw object)
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https://link.springe...
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Owing to their higher intrinsic electrical conductivity and chemical stability with respect to their oxide counterparts, nanostructured metal sulfides are expected to revive materials for resistive chemical sensor applications. Herein, we explore the gas sensing behavior of WS2 nanowire-nanoflake hybrid materials and demonstrate their excellent sensitivity (0.043 ppm-1) as well as high selectivity towards H2S relative to CO, NH3, H2, and NO (with corresponding sensitivities of 0.002, 0.0074, 0.0002, and 0.0046 ppm-1, respectively). Gas response measurements, complemented with the results of X-ray photoelectron spectroscopy analysis and first-principles calculations based on density functional theory, suggest that the intrinsic electronic properties of pristine WS2 alone are not sufficient to explain the observed high sensitivity towards H2S. A major role in this behavior is also played by O doping in the S sites of the WS2 lattice. The results of the present study open up new avenues for the use of transition metal disulfide nanomaterials as effective alternatives to metal oxides in future applications for industrial process control, security, and health and environmental safety.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- WS2
- nanowire
- nanoflake
- gas sensor
- H2S
- O doping
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Asres, Georgies ...
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Baldoví, José J.
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Dombovari, Aron
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Järvinen, Topias
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Lorite, Gabriela ...
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Mohl, Melinda
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visa fler...
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Shchukarev, Andr ...
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Pérez Paz, Aleja ...
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Xian, Lede
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Mikkola, Jyri-Pe ...
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Lloyd Spetz, Ani ...
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Jantunen, Heli
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Rubio, Ángel
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Kordás, Krisztia ...
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Materialkemi
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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och Den kondenserade ...
- Artiklar i publikationen
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Nano Reseach
- Av lärosätet
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Umeå universitet
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Linköpings universitet