Flame-Sprayed Pure and Ce-Doped TiO2 Photocatalysts

Abstract

Pure and Ce-doped TiO 2 nanoparticles were successfully synthesized in one step by means of the scalable flame spray pyrolysis (FSP) process. Complete structural and chemical characterization of these materials revealed that the majority of the nanoparticles are crystalline and spherical, ranging from 5 to 45 nm in diameter. The band gap of TiO 2 was reduced by doping with Ce from 2.43 to 3.06 eV and the Ce-TiO 2 nanoparticles exhibit a strong photoelectrical response to visible light illumination. Ce-TiO 2 nanoparticles obtained with this scalable method are trivially scalable to industrial level manufacturing, granting and enabling additional approaches for the actual application of ceramic oxide nanomaterials to combat challenges such as environmental cleanup and energy production from the visible part of solar inputs.

Photocatalytic Degradation of Profenofos and Triazophos Residues in the Chinese Cabbage, Brassica chinensis, Using Ce-Doped TiO2

“…Triazophos P 19 -S 20 1.85680 N 3 -C 7 1.47000 P 19 -O 18 1.76000 C 7 -C 8 1.39516 P 19 -O 21 1.76000 C 7 -C 9 1.39483 P 19 -O 22 1.76000 C 8 -C 10 1.39471 O 18 -C 1 1.43000 C 9 -C 12 1.39514 C 1 -N 5 1.40175 C 10 -C 14 1.39543 C 1 -N 6 1.43487 C 12 -C 14 1.39483 C 2 -N 6 1.40185 O 21 -C 30 1.43000 C 2 -N 3 1.39180 O 22 -C 23 1.43000 N 3 -N 5 1.39180 C 30 -C 31 1.50025 C 23 -C 24 1.50025…”

“…Bond Bond Length (×10 −10 m) Bond Bond Length (×10 −10 m) Profenofos P 13 -O 14 1.45200 C 16 -C 17 1.50715 P 13 -O 26 1.76000 C 17 -C20 1.50713 P 13 -O 12 1.76000 O 26 -C 27 1.43000 P 13 -S 15 2.11000 C 27 -C 28 1.50025 C 16 -S 15 1.78000 O 12 -C 3 1.43000 C 3 -C 4 1.39543 C 1 -C 2 1.39516 C 4 -C 5 1.39483 C 2 -Cl 11 1.76000 C 5 -C 6 1.39514 C 2 -C 3 1.39471 C 6 -Br 10 1.91000 C 6 -C 1 1.39483 Triazophos P 19 -S 20 1.85680 N 3 -C 7 1.47000 P 19 -O 18 1.76000 C 7 -C 8 1.39516 P 19 -O 21 1.76000 C 7 -C 9 1.39483 P 19 -O 22 1.76000 C 8 -C 10 1.39471 O 18 -C 1 1.43000 C 9 -C 12 1.39514 C 1 -N 5 1.40175 C 10 -C 14 1.39543 C 1 -N 6 1.43487 C 12 -C 14 1.39483 C 2 -N 6 1.40185 O 21 -C 30 1.43000 C 2 -N 3 1.39180 O 22 -C 23 1.43000 N 3 -N 5 1.39180 C 30 -C 31 1.50025 C 23 -C 24 1.50025…”

“…To enhance the photocatalytic activity under the visible light, main-group element (Ce, N, C, Ag, etc.) doped nano TiO 2 was extensively applied [17][18][19][20]. Among them, Cerium-doped nano TiO 2 (TiO 2 /Ce) exhibits a strong photocatalytic capability under the visible lights [20][21][22].…”

“…doped nano TiO 2 was extensively applied [17][18][19][20]. Among them, Cerium-doped nano TiO 2 (TiO 2 /Ce) exhibits a strong photocatalytic capability under the visible lights [20][21][22]. Liu et al found TiO 2 /Ce can rapidly degrade dimethoate and acephate in vegetables in the field [23,24].…”

Preparation Technique and Properties of Nano-TiO2 Photocatalytic Coatings for Asphalt Pavement

“…TiO 2 is generally considered as one of the most effective photoinduced catalysts and is frequently used to oxidize organic and inorganic compounds in the air and water due to its strong oxidative ability and long-term photostability, as well as being a non-expensive and non-toxic material. Therefore, titania-mediated photocatalysis is a very promising approach to the increasing crucial issues associated with environmental pollution [5,6]. Indeed, among the possible solutions, TiO 2 -coated materials can significantly decompose a variety of organic (e.g., volatile organic compounds) and inorganic (e.g., NO x and SO 2 ) pollutants due to its unique photocatalytic property, which contributes to its ability toward air-purifying and self-cleaning.…”