Effect of TiO2 Nanotube Calcination Temperature and Oxygen Pressure to Photocatalytic Oxidation of Phenol
F.F. Orudzhev, A.B. Isaev, N.N. Shabanov
The influences of oxygen pressure and TiO2 nanotubes calcination temperature on the photocatalytic degradation phenol were investigated. According to experimental results the dissolved oxygen at different pressure and TiO2 calcination temperature was a determining parameter for the photocatalytic degradation of phenol. The calcination temperature of TiO2 nanotubes affects the anatase phase, crystallite size, surface area and pore volume of TiO2 powder and respectively to rate of photodegradation of phenol. The kinetics of photocatalytic degradation of phenol in presence of TiO2 nanotubes at high pressure of oxygen is investigated. The initial rate of photodegradation phenol were increased from 0.21 to 0.52 mg∙l–1∙min-1 when the initial oxygen pressure was increased from 0.1 to 0.6 MPa and have linear relationship between phenol oxidation rate and the oxygen pressure. The dissolved oxygen acted as an electron scavenger with formation reactive oxygen species such as the superoxide ion and the hydroxyl radical.
Keywords
Calcinations Temperature, Oxygen Pressure, Phenol, Photocatalytic Degradation, TiO2 Nanotubes
Published online 2/25/2018, 15 pages
DOI: http://dx.doi.org/10.21741/9781945291593-5
Part of Photocatalytic Nanomaterials for Environmental Applications
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