Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.13091/249
Title: | Stable CuCrO2 nanoparticles - ZnO fibres p-n heterostructure system for effective photocatalytic activity | Authors: | Baylan, Elif Akyıldız, Hasan Altıntaş Yıldırım, Özlem |
Keywords: | Photocatalytic Activity P-N Heterojunctions Zno Fibre Cucro2 Delafossite Photocatalyst Room-Temperature Synthesis Hydrothermal Synthesis Thin-Films Enhanced Photocatalysis Nanorods Heterojunction Nanocrystals Degradation Removal Water |
Issue Date: | 2019 | Publisher: | UNIV NOVI SAD, FAC TECHNOLOGY | Abstract: | Heterostructured photocatalysts were fabricated by coupling electrospunn-type ZnO fibres and hydrothermally derived p-type CuCrO2 nanoparticles. The effect of the amount of CuCrO2 nanoparticles on the photocatalytic activity of the heterostructured photocatalyst was systematically investigated. The formation of the heterojunctions between the two semiconductors was revealed via detailed XRD, XPS, TEM and optical property measurements. The experimental results indicated that the optimal CuCrO2 amount in the composite photocatalyst was 1.0 wt.% due to the optimum doping and surface coverage, higher absorption onset edge, larger absorption intensity and optimum band gap energy. This composite photocatalyst, fabricated by drop casting of CuCrO2 nanoparticle dispersion on ZnO fibres, displayed 30% higher rate constant (k) value compared to the pure ZnO fibres in the degradation of methylene blue dye molecules and reached 93.4% decomposition in 1 h under UV-visible light exposure. The obtained results are highly encouraging in comparison to only UV/light active p-n heterostructured photocatalysts previously reported in literature. Therefore, we believe that the proposed approach here opened the way for simple synthesis of highly-efficient visible light active heterostructured semiconductor photocatalyst systems. | URI: | https://doi.org/10.2298/PAC1902189B https://hdl.handle.net/20.500.13091/249 |
ISSN: | 1820-6131 2406-1034 |
Appears in Collections: | Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections |
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eddf7a614abeabdec6bab67b672126648731.pdf | 1.42 MB | Adobe PDF | View/Open |
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