Journal
NANOTECHNOLOGY
Volume 26, Issue 12, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/0957-4484/26/12/125402
Keywords
copper; TiO2; photocatalyst; plasmon resonance; hydrogen production
Funding
- National Research Foundation (NRF) of Korea - Korea Ministry of Science, ICT and Future Planning [2013M2A8A1041415]
- National Research Foundation of Korea [2013M2A8A1041415, 21A20130012538] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Cheap and visible-light responsive Cu/TiO2 photocatalysts were fabricated by illuminating ultraviolet (UV) to a mixture of TiO2 nanoparticles (NPs) and Cu2O NPs in an evacuated reaction chamber. The Cu2O NPs were reduced by UV in an oxygen-free reaction chamber, and hence, metallic Cu NPs with size less than 5 nm were uniformly loaded on TiO2. Due to the plasmon resonance of the Cu NPs, the Cu/TiO2 exhibited a good performance of water-splitting hydrogen production under visible light in the presence of glycerol as a hole scavenger. The optimum hydrogen production rate of Cu/TiO2 was 0.24 mmol h(-1) g(-1). The Cu/TiO2 also showed high stability of the photocatalytic performance in the evacuated chamber; however, the visible-light responsive photocatalytic properties dramatically and rapidly decreased when exposed to air.
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