Highly mobile and reactive state of hydrogen in metal oxide semiconductors at room temperature
Hydrogen in metal oxides usually strongly associates with a neighboring oxygen ion through an O-H bond and thus displays a high stability. Here we report a novel state of hydrogen with unusually high mobility and reactivity in metal oxides at room temperature. We show that freshly doped hydrogen in...
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| Format: | Online |
| Language: | English |
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Nature Publishing Group
2013
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3818659/ |
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pubmed-38186592013-11-06 Highly mobile and reactive state of hydrogen in metal oxide semiconductors at room temperature Chen, Wan Ping He, Ke Feng Wang, Yu Chan, Helen Lai Wah Yan, Zijie Article Hydrogen in metal oxides usually strongly associates with a neighboring oxygen ion through an O-H bond and thus displays a high stability. Here we report a novel state of hydrogen with unusually high mobility and reactivity in metal oxides at room temperature. We show that freshly doped hydrogen in Nb2O5 and WO3 polycrystals via electrochemical hydrogenation can reduce Cu2+ ions into Cu0 if the polycrystals are immersed in a CuSO4 solution, while this would not happen if the hydrogenated polycrystals have been placed in air for several hours before the immersion. Time-dependent studies of electrochemically hydrogenated rutile single crystals reveal two distinct states of hydrogen: one as protons covalently bonded to oxygen ions, while the other one is highly unstable with a lifetime of just a few hours. Observation of this mobile and reactive state of hydrogen will provide new insight into numerous moderate and low temperature interactions between metal oxides and hydrogen. Nature Publishing Group 2013-11-06 /pmc/articles/PMC3818659/ /pubmed/24193143 http://dx.doi.org/10.1038/srep03149 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/3.0/ This work is licensed under a Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ |
| repository_type |
Open Access Journal |
| institution_category |
Foreign Institution |
| institution |
US National Center for Biotechnology Information |
| building |
NCBI PubMed |
| collection |
Online Access |
| language |
English |
| format |
Online |
| author |
Chen, Wan Ping He, Ke Feng Wang, Yu Chan, Helen Lai Wah Yan, Zijie |
| spellingShingle |
Chen, Wan Ping He, Ke Feng Wang, Yu Chan, Helen Lai Wah Yan, Zijie Highly mobile and reactive state of hydrogen in metal oxide semiconductors at room temperature |
| author_facet |
Chen, Wan Ping He, Ke Feng Wang, Yu Chan, Helen Lai Wah Yan, Zijie |
| author_sort |
Chen, Wan Ping |
| title |
Highly mobile and reactive state of hydrogen in metal oxide semiconductors at room temperature |
| title_short |
Highly mobile and reactive state of hydrogen in metal oxide semiconductors at room temperature |
| title_full |
Highly mobile and reactive state of hydrogen in metal oxide semiconductors at room temperature |
| title_fullStr |
Highly mobile and reactive state of hydrogen in metal oxide semiconductors at room temperature |
| title_full_unstemmed |
Highly mobile and reactive state of hydrogen in metal oxide semiconductors at room temperature |
| title_sort |
highly mobile and reactive state of hydrogen in metal oxide semiconductors at room temperature |
| description |
Hydrogen in metal oxides usually strongly associates with a neighboring oxygen ion through an O-H bond and thus displays a high stability. Here we report a novel state of hydrogen with unusually high mobility and reactivity in metal oxides at room temperature. We show that freshly doped hydrogen in Nb2O5 and WO3 polycrystals via electrochemical hydrogenation can reduce Cu2+ ions into Cu0 if the polycrystals are immersed in a CuSO4 solution, while this would not happen if the hydrogenated polycrystals have been placed in air for several hours before the immersion. Time-dependent studies of electrochemically hydrogenated rutile single crystals reveal two distinct states of hydrogen: one as protons covalently bonded to oxygen ions, while the other one is highly unstable with a lifetime of just a few hours. Observation of this mobile and reactive state of hydrogen will provide new insight into numerous moderate and low temperature interactions between metal oxides and hydrogen. |
| publisher |
Nature Publishing Group |
| publishDate |
2013 |
| url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3818659/ |
| _version_ |
1612023701816999936 |