Tuning the Electron Localization of Gold Enables the Control of Nitrogen-to-Ammonia Fixation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10425327" target="_blank" >RIV/00216208:11320/19:10425327 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=vjm_Kgp8eW" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=vjm_Kgp8eW</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/anie.201909477" target="_blank" >10.1002/anie.201909477</a>
Alternative languages
Result language
angličtina
Original language name
Tuning the Electron Localization of Gold Enables the Control of Nitrogen-to-Ammonia Fixation
Original language description
The (photo)electrochemical N-2 reduction reaction (NRR) provides a favorable avenue for the production of NH3 using renewable energy in mild operating conditions. Understanding and building an efficient catalyst with high NH3 selectivity represents an area of intense interest for the early stages of development for NRR. Herein, we introduce a CoOx layer to tune the local electronic structure of Au nanoparticles with positive valence sites for boosting conversion of N-2 to NH3. The catalysts, possessing high average oxidation states (ca. 40 %), achieve a high NH3 yield rate of 15.1 mu g cm(-2) h(-1) and a good faradic efficiency of 19 % at -0.5 V versus reversible hydrogen electrode. Experimental results and simulations reveal that the ability to tune the oxidation state of Au enables the control of N-2 adsorption and the concomitant energy barrier of NRR. Altering the Au oxidation state provides a unique strategy for control of NRR in the production of valuable NH3.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
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Continuities
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Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Angewandte Chemie - International Edition
ISSN
1433-7851
e-ISSN
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Volume of the periodical
58
Issue of the periodical within the volume
51
Country of publishing house
DE - GERMANY
Number of pages
6
Pages from-to
18604-18609
UT code for WoS article
000493865100001
EID of the result in the Scopus database
2-s2.0-85074822689