Self-templated formation of AgCl/TiO2 hollow octahedra for improved visible-light photocatalytic activity

Wang, Xuefei; Yu, Jingchao; Fu, Can; Li, Tianyi; Yu, Huogen

doi:10.1016/j.apsusc.2019.07.221

Cited by 16 publications

(4 citation statements)

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“…The E g value of PbMoO 4 is 3.16 eV, while the E g value of AgCl is 3.25 eV. 31,32 From the empirical formulas 2 and 3, the positions of the conduction band (CB) and the valence band (VB) of AgCl and PbMoO 4 were calculated. The values are listed in Table 1 (2)…”

Section: Discussionmentioning

confidence: 99%

“…However, because the activity of the catalyst is closely related to its band gap width, the reaction mechanism was analyzed. The E g value of PbMoO 4 is 3.16 eV, while the E g value of AgCl is 3.25 eV. , From the empirical formulas and , the positions of the conduction band (CB) and the valence band (VB) of AgCl and PbMoO 4 were calculated. The values are listed in Table . …”

Section: Discussionmentioning

confidence: 99%

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Preparation of a AgCl/PbMoO₄ Composite and Investigation of Its Photocatalytic Oxidative Desulfurization Performance

Chang

Han

et al. 2020

ACS Omega

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PbMoO4 materials were synthesized by the glycerol and hydrothermal methods, and AgCl nanoparticles were loaded onto the surface of PbMoO4 by using the precipitation–deposition method. Finally, a AgCl/PbMoO4 photocatalyst was successfully prepared. X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, and UV–vis diffuse reflectance spectroscopy (UV–vis-DRS) were used to characterize the phase composition, morphology, and light absorption characteristics of the catalyst. An n-octane solution of dibenzothiophene (DBT) was used to simulate fluid catalytic cracking to make gasoline. The photocatalytic oxidation performance of DBT under visible light was studied in terms of the type of light source as well as of the catalyst, substrate, and AgCl content. The mechanism of photocatalytic oxidation was also studied. The results show that AgCl loading causes a red shift of the absorption edge of PbMoO4, which improves the photocatalytic activity of the material. When the AgCl loading was 25.0%, the amount of catalyst was 1.5 g/L, and the visible light irradiation time was 2.0 h, the highest desulfurization rate of DBT reached 97.0%.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Preparation of a AgCl/PbMoO₄ Composite and Investigation of Its Photocatalytic Oxidative Desulfurization Performance

Chang

Han

et al. 2020

ACS Omega

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“…Up to date, several Ag-based photocatalysts, including AgX (X= Cl, Br, I) (Wang et al, 2019;Wen et al, 2020;Xin et al, 2019), Ag2O (Liang et al, 2019), Ag2CO3 (Y. , and Ag3PO4 (Martín-Gómez et al, 2020), have demonstrated an outstanding photocatalytic performance under natural sunlight or the visible light. Among them, Ag3PO4 is extremely attractive since it could attain 90% efficiency over the 400-800 nm wavelength (Chen et al, 2015(Chen et al, , 2013.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic oxidation of pollutants in gas-phase via Ag₃PO₄-based semiconductor photocatalysts: Recent progress, new trends, and future perspectives

Naciri

Hsini

Bouzıanı

et al. 2021

Critical Reviews in Environmental Science and Technology

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“…formation of heterojunctions [14,15] whose interfaces act as regions of charge carriers that alter the electrical, optical and magnetic properties of the material according to the band structures of the present phases [16]. Composition and modification are another strategy to the design of the photocatalysts with higher reactivity of active sites and the desired surface, and thus reducing the charge carriers recombination and enhancing the photocatalytic activity [17,18]. The strategies of obtaining heterojunctions for the effective separation, transfer and suppression of the charges combination are in several applications to obtain clean and sustainable energy sources.…”

Section: Introductionmentioning

confidence: 99%

Correlation of photocatalytic activity and defects generated in Ca2+-based heterojunctions

et al. 2020

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In this work a new semiconductor based on calcium heterojunction (CaO/CaTiO 3 ) was evaluated to the optical properties correlated to crystalline lattice defects. The heterojunctions of the semiconductor were prepared by the sol-gel route and its formation was confirmed by the intimate contact interface between crystalline phases. Morphology and elemental composition of the nanometric heterojunction were evaluated. Chemical environment and composition of the surface were used to determine the oxidation state of the material constituents. The electronic structure was evaluated and the relationship among band gap energy, photoluminescent emission energy, and photocatalytic activity of the materials was demonstrated. Oxygen vacancies located on the surface promoted photoluminescent spectra emission in the green wavelength, making them more photoactive than those defects that emitted in the red region. The use of active species scavenger indicated that the photogenerated species with the greatest photocatalytic action was the superoxide radical. This study has developed calcium heterojunctions for application as photocatalysts, demonstrating the importance of the defects generated in the production of heterojunctions and the activity of photogenerated species, studied using scavengers.

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Self-templated formation of AgCl/TiO2 hollow octahedra for improved visible-light photocatalytic activity

Cited by 16 publications

References 56 publications

Preparation of a AgCl/PbMoO₄ Composite and Investigation of Its Photocatalytic Oxidative Desulfurization Performance

Preparation of a AgCl/PbMoO₄ Composite and Investigation of Its Photocatalytic Oxidative Desulfurization Performance

Photocatalytic oxidation of pollutants in gas-phase via Ag₃PO₄-based semiconductor photocatalysts: Recent progress, new trends, and future perspectives

Correlation of photocatalytic activity and defects generated in Ca2+-based heterojunctions

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Self-templated formation of AgCl/TiO2 hollow octahedra for improved visible-light photocatalytic activity

Cited by 16 publications

References 56 publications

Preparation of a AgCl/PbMoO4 Composite and Investigation of Its Photocatalytic Oxidative Desulfurization Performance

Preparation of a AgCl/PbMoO4 Composite and Investigation of Its Photocatalytic Oxidative Desulfurization Performance

Photocatalytic oxidation of pollutants in gas-phase via Ag3PO4-based semiconductor photocatalysts: Recent progress, new trends, and future perspectives

Correlation of photocatalytic activity and defects generated in Ca2+-based heterojunctions

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Preparation of a AgCl/PbMoO₄ Composite and Investigation of Its Photocatalytic Oxidative Desulfurization Performance

Preparation of a AgCl/PbMoO₄ Composite and Investigation of Its Photocatalytic Oxidative Desulfurization Performance

Photocatalytic oxidation of pollutants in gas-phase via Ag₃PO₄-based semiconductor photocatalysts: Recent progress, new trends, and future perspectives