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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c01687
|2 doi
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|a pubmed24n1202.xml
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|a (DE-627)NLM360625347
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|a (NLM)37562969
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|a DE-627
|b ger
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|e rakwb
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|a eng
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| 100 |
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|a Paul, Dipanjan
|e verfasserin
|4 aut
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|a p-/n-Type Switching in the Ag/BTO/TiO2 Nanocomposite as a Gas Sensor toward Ethanol, Liquefied Petroleum Gas, and Ammonia
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 22.08.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a A novel Ag/BTO/TiO2 nanocomposite was prepared using chemical reduction and sol-gel techniques followed by sintering at ∼950 °C to grow rutile TiO2 and remove organic materials and hydroxyl groups. The structural, optical, morphological, dielectric, and gas-sensing properties were investigated using X-ray diffraction, Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, and inductance, capacitance, and resistance meter, respectively. The surface plasmon resonance peak of Ag was observed at 428 nm, and the absorption edge of the Ag/BTO/TiO2 nanocomposite was observed at 235 nm, with an energy bandgap of 5.42 eV. The dielectric constant is lower at 25 °C and becomes highest at 350 °C and low frequency. The percentage response is better toward ammonia than ethanol and liquefied petroleum gas (LPG) at 25 °C, while it is greater, ∼87%, for LPG at a higher temperature. The p-/n-type switching and vice versa were recorded in the whole gas-sensing measurement. During response-recovery time, the device performed as n type for ethanol and ammonia and p type for LPG, with a very fast response time of ∼4 s for all gases. The recovery time for ethanol was achieved at 20-25 s, while for LPG and ammonia, it was ∼60 s. Moreover, the negative and positive activation energies also confirm the switching behavior in the novel Ag/BTO/TiO2 nanocomposite
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|a Journal Article
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|a Aamir, Lubna
|e verfasserin
|4 aut
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|a Aslam, Afia
|e verfasserin
|4 aut
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|a Rathore, Deepshikha
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 39(2023), 33 vom: 22. Aug., Seite 11879-11887
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:39
|g year:2023
|g number:33
|g day:22
|g month:08
|g pages:11879-11887
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|u http://dx.doi.org/10.1021/acs.langmuir.3c01687
|3 Volltext
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