Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/513
Title: UV/visible light active CuCrO2 nanoparticle-SnO2 nanofiber p-n heterostructured photocatalysts for photocatalytic applications
Authors: Dursun, Sami
Kaya, İsmail Cihan
Kalem, Volkan
Akyıldız, Hasan
Keywords: Methylene-Blue
Facile Synthesis
Gas Sensors
Oxide
Co
Decolorization
Heterojunction
Degradation
Performance
Reduction
Issue Date: 2018
Publisher: ROYAL SOC CHEMISTRY
Abstract: CuCrO2 nanoparticle decorated SnO2 nanofiber composites have been prepared as novel p-n heterostructured semiconductor photocatalysts for the degradation of organic pollutants in wastewater. The composite structure was achieved via drop casting of various amounts of hydrothermally derived CuCrO2 nanoparticles on electrospun SnO2 nanofibers. The microstructural and morphological features of each semiconductor and the formation of p-n heterojunctions between them were characterized. In addition, the photo-response and electrochemical properties of the samples were determined. The photocatalytic activity of the heterostructured photocatalysts was investigated systematically as a function of the amount of CuCrO2 nanoparticles in the samples. Experimental results showed that the optimal decoration amount was 0.6 wt% CuCrO2 on SnO2. This composite photocatalyst displayed a 41% higher rate constant value compared to pure SnO2 nanofibers in the degradation of methylene blue dye molecules and reached 83% degradation under UV/visible light irradiation after 1 h. The increase in the photocatalytic activity was ascribed to the incorporation of Cr3+ and Cu+ cations into the SnO2 host lattice and the more effective electron-hole pair separation in the heterostructured sample. The presented data here are highly convincing in comparison to those of UV active p-n heterostructured photocatalysts reported previously in the literature. Therefore, this work opens the way to develop visible light active p-n heterostructured semiconductor photocatalysts using p-type delafossites with n-type oxides.
URI: https://doi.org/10.1039/c8dt02850h
https://hdl.handle.net/20.500.13091/513
ISSN: 1477-9226
1477-9234
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collections
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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