AA- and ABA-stacked carbon nitride (C3N4): novel photocatalytic water splitting solar-to-hydrogen energy conversion

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F18%3A43954207" target="_blank" >RIV/49777513:23640/18:43954207 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21220/18:00328972
Result on the web
<a href="http://dx.doi.org/10.1039/c8cp02898b" target="_blank" >http://dx.doi.org/10.1039/c8cp02898b</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c8cp02898b" target="_blank" >10.1039/c8cp02898b</a>

Result language
angličtina
Original language name
AA- and ABA-stacked carbon nitride (C3N4): novel photocatalytic water splitting solar-to-hydrogen energy conversion
Original language description
We report the development of the C3N4 structure by integrating two different structures: (i) two identical layers as AAstacked C3N4 and (ii) intercalating one different layer between two identical layers as ABA stacked C3N4. This in turn endows C3N4 with significantly promoted charge migration, up-shifted conduction-band (CB) level, enhanced CB potential from -0.89 eV (AA-stacked C3N4) to -1.03 eV (ABA-stacked C3N4), broadened band gap as well as enhanced surface area, all of which favor the enhancement of the photocatalytic performance. The optical absorption level exhibited significant enhancement in the visible light region when shifting from AA-stacked C3N4 to ABA-stacked C3N4, where the absorption edge moves from = 508.1 = 454.1 nm. This corresponds to the direct optical band gap of 2.44 eV 2.73 eV, which is well matched with the solar spectrum and the sufficient negative CB potential for H+/H-2 reduction. Based on these results, we can conclude that AA-stacked and ABA-stacked C3N4 satisfies all the requirements to be efficient photocatalysts. This study will significantly improve the search efficiency and considerably aid the experimentalists in the exploration of novel photocatalysts.
Czech name
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Czech description
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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
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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