One-step synthesis of Bi4Ti3O12/Bi2O3/Bi12TiO20 spherical ternary heterojunctions with enhanced photocatalytic properties via sol-gel method

Preparation of Binary Type II α-Bi2O3/Bi12TiO20 Cross-Shaped Heterojunction with Enhanced Visible Light Photocatalytic Performance

“…Generally, a decrease of the peak intensity in PL means a decrease in the recombination rate of carriers, also indicating an increase in the photocatalytic ability of catalysts. 60,61 The PL peaks of BTO in Figure 6 were similar to those in the literature. 31 The fluorescence intensity of BBTO was significantly lower than that of BTO at an excitation with 320 nm, which revealed that the formed heterojunction structure can effectively inhibit the recombination of photogenerated carriers to improve their separation rate.…”

“…It was worth noting that this type II heterojunction was significantly different from the similar structures reported in the literature, where a Bi 4 Ti 3 O 12 /Bi 2 O 3 /Bi 12 TiO 20 ternary composite was obtained at 500 °C by a sol–gel method . The CB positions of the BO and Bi 4 Ti 3 O 12 were determined to be 0.01 and 0.023 eV, respectively, in the literature.…”

“…77,78 It was worth noting that this type II heterojunction was significantly different from the similar structures reported in the literature, where a Bi 4 Ti 3 O 12 /Bi 2 O 3 /Bi 12 TiO 20 ternary composite was obtained at 500 °C by a sol−gel method. 61 The Based on the above analysis, a possible photocatalytic mechanism of BBTO composite is presented in Figure 8d and can be described with eqs 2−12. With the visible light irradiation, the surface electrons of BO and BTO were simultaneously excited to produce electron−hole pairs (e−h + ) (eqs 2 and 3).…”

Highly transparent Bi4Ti3O12 thin-film electrodes for ferroelectric-enhanced photoelectrochemical processes

“…Effective separation of the photogenerated carriers is therefore achieved in the local unit cell. 8 On this basis, several BiTO-based powder systems have been successfully reported over the years, for multiple photocatalytic purposes, [9][10][11][12][13][14][15][16][17][18][19] and recently BiTO has been employed as a catalyst also in the CO 2 photo-reduction reaction, producing CO, [20][21][22][23][24] methanol (CH 3 OH), 21 and methane (CH 4 ). 24 In addition to these already promising photo-catalytic performances, the distortion of the TiO 6 octahedra in the pseudo-perovskite blocks is responsible for the BiTO well-Please do not adjust margins Please do not adjust margins known ferroelectric behavior, 25 which has been proven to represent a strong driving force for bulk charge separation.…”

High-Temperature Corrosion Behavior of Bi3.75La0.25Ti3O12 and Bi3La1Ti3O12 Coating Prepared by rf Magnetron Sputtering

“…The layers of octahedra and (Bi 2 O 2 ) 2 + are observable when Trivalent elements such as lanthanum are used to replace bismuth [3,4]. Bi 2 O 3 applications have been primarily used in sensors and solid electrolytes [5,6]. However, there is a broad spectrum of applications for bismuthbased ternary and quaternary compounds containing metal oxides, and uses have been found in areas such as pigments, superconductors, sensors, scintillators, oxidation catalysis, photocatalysis, high-temperature electrolytes, and thermal barrier materials [7].…”