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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1021/la504162u
|2 doi
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|a pubmed24n0816.xml
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|a DE-627
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|a eng
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| 100 |
1 |
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|a Shin, Seokhee
|e verfasserin
|4 aut
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| 245 |
1 |
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|a High turnover frequency of hydrogen evolution reaction on amorphous MoS2 thin film directly grown by atomic layer deposition
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|c 2015
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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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| 500 |
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|a Date Completed 21.05.2015
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|a Date Revised 02.09.2016
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Recently amorphous MoS2 thin film has attracted great attention as an emerging material for electrochemical hydrogen evolution reaction (HER) catalyst. Here we prepare the amorphous MoS2 catalyst on Au by atomic layer deposition (ALD) using molybdenum hexacarbonyl (Mo(CO)6) and dimethyl disulfide (CH3S2CH3) as Mo and S precursors, respectively. Each active site of the amorphous MoS2 film effectively catalyzes the HER with an excellent turnover frequency of 3 H2/s at 0.215 V versus the reversible hydrogen electrode (RHE). The Tafel slope (47 mV/dec) on the amorphous film suggests the Volmer-Heyrovsky mechanism as a major pathway for the HER in which a primary discharging step (Volmer reaction) for hydrogen adsorption is followed by the rate-determining electrochemical desorption of hydrogen gas (Heyrovsky reaction). In addition, the amorphous MoS2 thin film is electrically evaluated to be rather conductive (0.22 Ω(-1) cm(-1) at room temperature) with a low activation energy of 0.027 eV. It is one of origins for the high catalytic activity of the amorphous MoS2 catalyst
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|a Journal Article
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| 700 |
1 |
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|a Jin, Zhenyu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kwon, Do Hyun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bose, Ranjith
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Min, Yo-Sep
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 31(2015), 3 vom: 27. Jan., Seite 1196-202
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:31
|g year:2015
|g number:3
|g day:27
|g month:01
|g pages:1196-202
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| 856 |
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|u http://dx.doi.org/10.1021/la504162u
|3 Volltext
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