Gas phase photocatalytic removal of toluene effluents on sulfated titania

Sulfated TiO2 Decontaminate 2-CEES and DMMP in Vapor Phase

“…Two dominant peaks about 529.7 and 531.4 eV, related with lattice oxygen, surface hydroxyl oxygen respectively, are presented on T200. However, there are three dominant peaks on ST200, they are 530.20 eV (lattice oxygen), 531.89 eV (surface hydroxyl oxygen) and 530.73 eV (oxygen in sulfate species), respectively [20,[23][24][25]. It is believed that the peak about 530.7 eV is attributed to the effects of SO 4 2-on TiO 2 and this result is consistent with the results of IR spectra.…”

“…The adsorption and reactivity amount of DMMP is about 326 lL over ST200, which is close to 5 times of P25, while, the adsorption amount over T200 is about 4 times of P25. The first main reason for the above results is that a large number of acid sites can be formed on the sulfated TiO 2 [18][19][20]. An anatase surface has two main types of active sites: exposed cation Ti surface site and Ti-OH with characters of Lewis acid and Brönsted acid, respectively [23].…”

“…And then, the active species, such as, O 2-,ÁOH, created over TiO 2 on UV radiation, would react with those chemisorption compounds [14][15][16][17]. In fact, toluene, benzene etc, which could also act as Lewis bases, can be decomposed effectively over sulfated TiO 2 [18][19][20]. So it is deduced that 2-CEES and DMMP are most likely to be adsorbed onto the sulfated TiO 2 surface by means of strong interactions with the surface and would be decomposed effectively.…”

Structural and electronic effects in bimetallic PdPt nanoparticles on TiO2 for improved photocatalytic oxidation of CO in the presence of humidity

“…28 mm), between which the reactant mixture was flowing. More details about the reactor can be found elsewhere [45]. The inner surface of the external tube was coated with a thin film of photocatalyst (0.25 mg/cm 2 ), so…”

Iron oxide supported sulfated TiO2 nanotube catalysts for NO reduction with propane

“…The average crystallite size (Table 2) was calculated using Scherrer equation from the (101) reflection of anatase. It has been reported that the degree of crystallization of the sulfated oxides is much lower than that of the non-sulfated oxides [22]. It is noteworthy that the XRD patterns of the anatase phase became weaker and slightly wider (inset of Fig.…”