| Název: | AA- and ABA-stacked carbon nitride (C3N4): novel photocatalytic water splitting solar-to-hydrogen energy conversion |
| Autoři: | Al-Jaary, Ali H. Reshak |
| Citace zdrojového dokumentu: | AL-JAARY, A. H. R. AA- and ABA-stacked carbon nitride (C3N4): novel photocatalytic water splitting solar-to-hydrogen energy conversion. Physical chemistry chemical physics, 2018, roč. 20, č. 35, s. 22972-22979. ISSN 1463-9076. |
| Datum vydání: | 2018 |
| Nakladatel: | Royal Society of Chemistry |
| Typ dokumentu: | článek article |
| URI: | 2-s2.0-85053462867 http://hdl.handle.net/11025/31198 |
| ISSN: | 1463-9076 |
| Klíčová slova v dalším jazyce: | Visible-light;band-structure;electronic-structure;polymorph C3N4;doped G-C3N4;photoreactivity;nanoparticles;nanosheets;evolution;precursor |
| Abstrakt v dalším jazyce: | 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. |
| Práva: | Plný text není přístupný. © Royal Society of Chemistry |
| Vyskytuje se v kolekcích: | Články / Articles (CTM) OBD |
Soubory připojené k záznamu:
| Soubor | Velikost | Formát | |
|---|---|---|---|
| Reshak_AA_ABA.pdf | 4,54 MB | Adobe PDF | Zobrazit/otevřít Vyžádat kopii |
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