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Journal of Materials Science: Materials in Electronics
Erschienen in: Journal of Materials Science: Materials in Electronics 17/2019

07.08.2019

Tuning the defects and luminescence of ZnO:(Er, Sm) nanoflakes for application in organic wastewater treatment

verfasst von: Zhe Zhang, Yuxin Song, Si Wu, Jiale Guo, Qi Zhang, Jingshu Wang, Jinghai Yang, Zhong Hua, Jihui Lang

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 17/2019

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Abstract

A series of ZnO nanoflakes modified with rare earth ions of Er and Sm were prepared by a simple chemical solution deposition approach. It was found that the doping content of rare-earth ions was dominant for the defects in the nanoflakes and the ability of photocatalytic degradation for rhodamine B (RhB). The ZnO:(Er, Sm) nanoflakes exhibited a superior photocatalytic activity compared to undoped ZnO mainly due to the longer lifetime of photogenerated electrons-hole pairs in the process of photocatalytic reaction, and Zn0.98Sm0.01Er0.01O nanoflakes could degrade 96.5% RhB within 60 min under UV light irradiation. PL results provided a strong evidence for the existence of VO defect, which was also found to be responsive for the enhanced photocatalytic activity of ZnO:(Er, Sm) nanoflakes. And the peaks at 515 nm and 550 nm could be attributed to the transitions of \(^{2} H_{11/2} \to^{4} I_{15/2}\) and \(^{4} S_{3/2} \to^{4} I_{15/2}\) from Er3+ ions, indicating the realization of green luminescence.
Vorheriger Artikel Preparation of Co2TiO4/CoTiO3/Polyaniline ternary nano-hybrids for enhanced destruction of agriculture poison and organic dyes under visible-light irradiation
Nächster Artikel Electrodeposition of copper-doped SnS thin films and their electric transmission properties control for thermoelectric enhancement

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Metadaten
Titel
Tuning the defects and luminescence of ZnO:(Er, Sm) nanoflakes for application in organic wastewater treatment
verfasst von
Zhe Zhang
Yuxin Song
Si Wu
Jiale Guo
Qi Zhang
Jingshu Wang
Jinghai Yang
Zhong Hua
Jihui Lang
Publikationsdatum
07.08.2019
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 17/2019
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-019-01911-y

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