Solvothermal synthesis and photocatalytic activity of Co-doped TiO₂ nanowires
by Nguyen Thi Quynh Hoa
International Journal of Nanotechnology (IJNT), Vol. 12, No. 5/6/7, 2015

Abstract: Co-doped TiO₂ nanowires with doping concentrations ranging from 0 at.% to 5 at.% were synthesised by a simple and low cost solvothermal method and their photocatalytic activities were investigated. The nanowires had a single-crystalline structure and grew along the <001> zone-axis rutile phase. The Co-doped TiO₂ nanowires showed a significantly enhanced photocatalytic activity under both UV and visible light irradiation compared to the undoped TiO₂ nanowires. This result can be attributed to the reduced bandgap energy and the inhibited charge recombination due to the incorporation of Co into TiO₂ matrix. Both UV and visible light photocatalytic efficiency shows a maximum at a Co doping concentration of 2 at.%.

Online publication date: Sun, 08-Mar-2015

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