Photocatalytic degradation of gaseous acetaldehyde on TiO2 with photodeposited metals and metal oxides

Effects of Ag and Pt on photocatalytic degradation of endocrine disrupting chemicals in water

“…Pt particles are known to be a good dehydrogenating catalyst, while Ag is an oxidation catalyst [49,50]. Sano et al [51] studied acetaldehyde degradation by Pt/TiO 2 and reported that the Pt on TiO 2 may provide two types of enhancement effects; one is for photocatalytic activity attributable to an increase in charge separation efficiency, and the other is for thermocatalytic activity attributable to surface of nanoparticle metals. Only the deposition of metal Pt on TiO 2 increased the acetaldehyde degradation activity.…”

Inter-relationship between Pt oxidation states on TiO2 and the photocatalytic mineralisation of organic matters

“…The Pt-O bond was suggested to be beneficial to the hydrogenation and dehydrogenation reaction [20]. In terms of gasphase photocatalytic degradation of acetaldehyde, Pt(0)/P25 was found to be only slightly (15%) more active than Pt ox /P25 [26]. The photocatalysts were prepared in the same way as by Lee and Choi [25].…”

“…The photocatalysts were prepared in the same way as by Lee and Choi [25]. In the studies by Pichat et al [20] and Sano et al [26], neither the Pt oxidation state dynamics after reaction nor the activity of the used photocatalysts were re-evaluated, which would have otherwise provided insightful information regarding the inter-relationship between Pt oxidation states and photocatalytic degradation of organic compounds.…”

The Effects of Some Operational Parameters in Photodegradation of Benzylamine and Aniline and Their Kinetics in Aqueous Suspension of TiO2 and Pt–Loaded TiO2

“…Coupling of semiconductors containing different band gaps, [15][16][17][18][19] surface sensitization by organic or inorganic species, 20-23 metal-doping and specially loading of inert metals such as Pd, Au, Ag and Pt on TiO 2 surface has been known for improvement of its photocatalytic activity. [24][25][26][27][28][29][30] Platinized TiO 2 particles are the most common metal loaded system. Deposition of inert metal on TiO 2 surface is done by mechanical mixing, 31 reduction precipitation in high temperature 32 and photodeposition.…”