Enhanced photocatalytic performance of TiO2 particles via effect of anatase–rutile ratio

Controlling the crystalline phase of TiO2 powders obtained by the solution combustion method and their photocatalysis activity

“…Any practical improvement in the photocatalytic efficiency of TiO 2 must overcome the poor quantum yield of the catalyst, which is caused by the rapid recombination of the photogenerated electrons and holes [12][13][14][15]. Recently, the preparation of anatase/rutile heterostructures [16][17][18][19][20][21] has been recognized as an effective route due to their excellent performance in improving the separation of photogenerated electrons and holes compared with single-phase photocatalysts. For instance, Bickley and co-workers reported that Degussa P-25 consisting of anatase and rutile crystalline phases demonstrated unusually high photocatalytic activity [22].…”

Study of the structure and characteristics of mesoporous TiO2 photocatalyst, and evaluation of its factors on gaseous formaldehyde removal by the analysis of ANOVA and S/N ratio

“…The predicted band positions at the point of zero charge of TR (10), TR (30), and TR (50) were À0.135 eV-2.755 eV, À0.125 eV-2.745 eV, and À0.105 eV-2.725 eV, respectively. However, earlier studies 45,46 indicated that the recombination of electron-hole pairs was faster for the rutile phase than for the anatase phase since photoexcitation would occur easily over the rutile phase with low band gap energy. This observation was corroborated by comparing Fig.…”

“…45,46 Thus, the content fractions of anatase and rutile in the TR catalysts were calculated by the Spurr and Myers equation, 47 as shown in Table 2. The fraction of rutile phase is in the order of TR(30) (81.5%) > TR(50) (77.9%) > TR(10) (56.9%).…”

Electrochemically assisted photocatalysis: Highly efficient treatment using thermal titanium oxides doped and non-doped electrodes for water disinfection

“…Certainly, TiO 2 can be found in three polymorphic phases: anatase, rutile and brookite (Yuangpho et al, 2015;Wang et al, 2015b). From the catalytic point of view, anatase and rutile are the most studied forms.…”

“…From the photocatalytic standpoint, there are two main polymorphous phases of TiO 2 : anatase and rutile (Yuangpho et al, 2015). The anatase phase is most commonly used due to its high photoactivity.…”