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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202100812
|2 doi
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|a pubmed24n1078.xml
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|a (DE-627)NLM323477496
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|a (NLM)33792108
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Peramaiah, Karthik
|e verfasserin
|4 aut
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|a Optically and Electrocatalytically Decoupled Si Photocathodes with a Porous Carbon Nitride Catalyst for Nitrogen Reduction with Over 61.8% Faradaic Efficiency
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|c 2021
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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
|b cr
|2 rdacarrier
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|a Date Revised 05.05.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2021 Wiley-VCH GmbH.
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|a The photoelectrochemical (PEC) approach is attractive as a promising route for the nitrogen reduction reaction (NRR) toward ammonia (NH3 ) synthesis. However, the challenges in synergistic management of optical, electrical, and catalytic properties have limited the efficiency of PEC NRR devices. Herein, to enhance light-harvesting, carrier separation/transport, and the catalytic reactions, a concept of decoupling light-harvesting and electrocatalysis by employing a cascade n+ np+ -Si photocathode is implemented. Such a decoupling design not only abolishes the parasitic light blocking but also concurrently improves the optical and electrical properties of the n+ np+ -Si photocathode without compromising the efficiency. Experimental and density functional theory studies reveal that the porous architecture and N-vacancies promote N2 adsorption of the Au/porous carbon nitride (PCN) catalyst. Impressively, an n+ np+ -Si photocathode integrating the Au/PCN catalyst exhibits an outstanding PEC NRR performance with maximum Faradaic efficiency (FE) of 61.8% and NH3 production yield of 13.8 µg h-1 cm-2 at -0.10 V versus reversible hydrogen electrode (RHE), which is the highest FE at low applied potential ever reported for the PEC NRR
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|a Journal Article
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|a decoupling light-harvesting and electrocatalysis
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|a nitrogen reduction
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|a photoelectrochemical
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|a porous carbon nitride
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|a Ramalingam, Vinoth
|e verfasserin
|4 aut
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|a Fu, Hui-Chun
|e verfasserin
|4 aut
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|a Alsabban, Merfat M
|e verfasserin
|4 aut
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|a Ahmad, Rafia
|e verfasserin
|4 aut
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|a Cavallo, Luigi
|e verfasserin
|4 aut
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|a Tung, Vincent
|e verfasserin
|4 aut
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|a Huang, Kuo-Wei
|e verfasserin
|4 aut
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| 700 |
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|a He, Jr-Hau
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 33(2021), 18 vom: 04. Mai, Seite e2100812
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:33
|g year:2021
|g number:18
|g day:04
|g month:05
|g pages:e2100812
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|u http://dx.doi.org/10.1002/adma.202100812
|3 Volltext
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