Saim Emin (Avtor), Matjaž Valant (Avtor)

Povzetek

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.

Ključne besede

CuWO4;nanocomposite;transient absorption spectroscopy;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.10 - Objavljeni povzetek znanstvenega prispevka na konferenci (vabljeno predavanje)
Organizacija: UNG - Univerza v Novi Gorici
UDK: 620.1/.2
COBISS: 4881915 Povezava se bo odprla v novem oknu
Št. ogledov: 4285
Št. prenosov: 0
Ocena: 0 (0 glasov)
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Ostali podatki

URN: URN:SI:UNG
Vrsta dela (COBISS): Delo ni kategorizirano
Strani: Str. 78
ID: 10860536