| Title: | Design of a highly photocatalytically active ZnO/CuWO4 nanocomposite |
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| Authors: | ID Emin, Saim, Materials Research Laboratory, University of Nova Gorica, 5000 Nova Gorica, Slovenia (Author)
ID Valant, Matjaž, Materials Research Laboratory, University of Nova Gorica, 5000 Nova Gorica, Slovenia (Author) |
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| Files: |
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| Language: | English |
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| Work type: | Not categorized |
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| Typology: | 1.10 - Published Scientific Conference Contribution Abstract (invited lecture) |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | We report the synthesis, photocatalytic activity and mechanistic study of a novel heterostructure (HTS) with an efficient charge separation. A ZnO/CuWO4 HTS material is reported for the first time. The nanocomposite (NC) consists of CuWO4 nanoparticles (ca. 200-400 nm) decorated with ZnO nanorods (ca. 30 nm, 100 nm length) and is shown to be a highly active photocatalyst for decomposition of model contaminants including methyl orange and terephthalic acid. The ZnO/CuWO4 interface is shown to be the key for controlling the enhanced activity of the composite material. Transient absorption spectroscopy studies demonstrated that a photoinduced charge transfer across the ZnO/CuWO4 interface increased electron-hole lifetime by 3 orders of magnitude, from < 20 s in ZnO to 30 ms in the ZnO/CuWO4 NC sample. Our findings show that through interface design efficient HTS materials can be prepared for a wide range of photocatalytic applications. |
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| Keywords: | CuWO4, nanocomposite, transient absorption spectroscopy |
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| Year of publishing: | 2017 |
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| PID: | 20.500.12556/RUNG-3191-421fb18a-f01c-9743-7052-84934ef1e2e3 |
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| COBISS.SI-ID: | 4881915 |
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| NUK URN: | URN:SI:UNG:REP:XLOPJ3ER |
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| Publication date in RUNG: | 28.08.2017 |
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| Views: | 5072 |
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| Downloads: | 0 |
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