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  ZnWO4/BiOI heterostructures with highly efficient visible light photocatalytic activity: the case of interface lattice and energy level match

Li, P., Zhao, X., Jia, C., Sun, H., Sun, L., Cheng, X., et al. (2013). ZnWO4/BiOI heterostructures with highly efficient visible light photocatalytic activity: the case of interface lattice and energy level match. J. Mater. Chem. A; Materials for energy and sustainability, 1(10), 3421-3429. doi:10.1039/C3TA00442B.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0014-F4BB-A Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-F959-6
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 Urheber:
Li, Pan1, Autor
Zhao, Xian2, Autor
Jia, Chunjiang1, 3, Autor           
Sun, Honggang2, Autor
Sun, Liming2, Autor
Cheng, Xiufeng2, Autor
Liu, Li2, Autor
Fan, Weiliu1, Autor
Affiliations:
1School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China , ou_persistent22              
2State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China , ou_persistent22              
3Research Group Rinaldi, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445617              

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 Zusammenfassung: ZnWO4/BiOI heterostructures with different constituents are synthesized via a chemical bath approach under mild conditions by tuning the Zn/Bi molar ratios. The obtained ZnWO4/BiOI heterostructures display high photocatalytic activities in degradation of MO and photocurrent response under visible light irradiation. Combining the experimental findings, first-principles calculations are used to investigate the surface geometry structures and the work functions of the (011) and (010) surfaces of the ZnWO4 phase and the (001) surface of the BiOI phase. The results show that the lattice and energy levels between the ZnWO4 and BiOI phases match well with each other to be capable of forming efficient ZnWO4/BiOI p–n heterojunction structures. This match promotes the separation and transfer of photoinduced electron–hole pairs at the interface, resulting in the excellent photocatalytic performance of the ZnWO4/BiOI heterostructures. Our findings show that the formation of a heterostructure would possess the excellent photocatalytic activities only if the lattice and energy level match between the two semiconductors was satisfied, which is of great importance for designing and developing more efficient heterostructured photocatalysts.

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Sprache(n): eng - English
 Datum: 2013-01-092013
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1039/C3TA00442B
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Titel: J. Mater. Chem. A; Materials for energy and sustainability
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Royal Society of Chemistry
Seiten: - Band / Heft: 1 (10) Artikelnummer: - Start- / Endseite: 3421 - 3429 Identifikator: -