Effect of SrTiO3 amount and ultrasonic disperse on the thickness of Bi2O3 nanosheets and the photocatalytic performance of the composite α-Bi2O3/SrTiO3

Wang, Jian; Jin, Cheng-Zhao; Yang, Xin-An; Liu, Xiao-Na; Dong, Yong-Ping; Zhang, Wang-Bing

doi:10.1016/j.apsusc.2023.158182

Cited by 6 publications

(1 citation statement)

References 59 publications

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“…Bismuth oxide (Bi 2 O 3 ) is a typical lamellar semiconductor, with an E g of 2.58–2.85 eV and especially a deep VB potential, which is advantageous for photocatalytic reactions to produce holes (h + ) with a strong oxidation capacity . It has been used for CO 2 reduction, water splitting, contaminant degradation, lignin degradation, nitrogen fixation, and preparation of heterogeneous photocatalysts with other compounds to improve photoactivity, such as CdMoO 4 , TiO 2 , SrTiO 3 , Zn 3 In 2 S 6 , ZnO, MnO 2 , and Ta 2 O 5 , but has not been used to modify Bi 4 O 5 Br 2 . So it makes sense to synthesize a heterojunction photocatalyst composed of Bi 4 O 5 Br 2 with a high CB potential and Bi 2 O 3 with a low VB potential. , …”

Section: Introductionmentioning

confidence: 99%

Generation of ^•OH and ^•O₂^– Radicals by a Bi₂O₃-Nanoparticle/Bi₄O₅Br₂ Type-II Heterojunction for Photocatalytic Degradation of Organic Molecules

Yu,

Mi,

Gong

et al. 2024

ACS Appl. Nano Mater.

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Constructing heterojunctions is an effective strategy for increasing semiconductor photocatalytic activity. Herein, a Bi 2 O 3 / Bi 4 O 5 Br 2 type-II heterojunction was synthesized using a simple onepot solvothermal route. The 0-dimensional (0D) Bi 2 O 3 nanoparticles are uniformly distributed within the 2D Bi 4 O 5 Br 2 nanosheets with (101̅ ) facets dominantly exposed. In comparison with pure Bi 2 O 3 and Bi 4 O 5 Br 2 , they show higher photocatalytic activity degradation of resorcinol (RO) and Rhodamine B (RhB). The Bi 2 O 3 /Bi 4 O 5 Br 2 composite containing 10% Bi 2 O 3 (BOB4) displays the best photocatalytic activity. For instance, compared with pure Bi 4 O 5 Br 2 and Bi 2 O 3 , the k(RO) values of BOB4 (0.58 h −1 ) are 3.1 and 4.8 times higher. The enhanced photocatalytic activity is attributed to the formation of a large heterojunction interface that results from the homogeneous distribution of Bi 2 O 3 nanoparticles in the Bi 4 O 5 Br 2 nanosheet, which effectively enhances the photogenerated charge separation in a type-II mode. Major active species include superoxide radicals ( • O 2 − ), hydroxyl radicals ( • OH), and holes (h + ). In addition, the Bi 2 O 3 /Bi 4 O 5 Br 2 photocatalysts exhibit outstanding resistance to inorganic ions, pH, water matrix, as well as outdoor sunlight and favorable stability and biocompatibility. This work presents a simple method to construct Bi-based heterojunction architectures for photoactivity improvement.

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Section: Introductionmentioning

confidence: 99%

Generation of ^•OH and ^•O₂^– Radicals by a Bi₂O₃-Nanoparticle/Bi₄O₅Br₂ Type-II Heterojunction for Photocatalytic Degradation of Organic Molecules

Yu,

Mi,

Gong

et al. 2024

ACS Appl. Nano Mater.

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A ZnO-002/amorphous Bi2WO6 heterojunction with enhanced electron-hole separation for high-performance Cr(VI) photoreduction

Jin,

Liu,

Wang

et al. 2024

Applied Surface Science

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Bi-element gradient doped B/N-TiO2-x synthesized by one-step solvothermal method enhances the photocatalysis of Cr(VI)

Yan,

Jin,

Yang

et al. 2024

Applied Surface Science

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Effect of SrTiO3 amount and ultrasonic disperse on the thickness of Bi2O3 nanosheets and the photocatalytic performance of the composite α-Bi2O3/SrTiO3

Cited by 6 publications

References 59 publications

Generation of ^•OH and ^•O₂^– Radicals by a Bi₂O₃-Nanoparticle/Bi₄O₅Br₂ Type-II Heterojunction for Photocatalytic Degradation of Organic Molecules

Generation of ^•OH and ^•O₂^– Radicals by a Bi₂O₃-Nanoparticle/Bi₄O₅Br₂ Type-II Heterojunction for Photocatalytic Degradation of Organic Molecules

A ZnO-002/amorphous Bi2WO6 heterojunction with enhanced electron-hole separation for high-performance Cr(VI) photoreduction

Bi-element gradient doped B/N-TiO2-x synthesized by one-step solvothermal method enhances the photocatalysis of Cr(VI)

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Effect of SrTiO3 amount and ultrasonic disperse on the thickness of Bi2O3 nanosheets and the photocatalytic performance of the composite α-Bi2O3/SrTiO3

Cited by 6 publications

References 59 publications

Generation of •OH and •O2– Radicals by a Bi2O3-Nanoparticle/Bi4O5Br2 Type-II Heterojunction for Photocatalytic Degradation of Organic Molecules

Generation of •OH and •O2– Radicals by a Bi2O3-Nanoparticle/Bi4O5Br2 Type-II Heterojunction for Photocatalytic Degradation of Organic Molecules

A ZnO-002/amorphous Bi2WO6 heterojunction with enhanced electron-hole separation for high-performance Cr(VI) photoreduction

Bi-element gradient doped B/N-TiO2-x synthesized by one-step solvothermal method enhances the photocatalysis of Cr(VI)

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Generation of ^•OH and ^•O₂^– Radicals by a Bi₂O₃-Nanoparticle/Bi₄O₅Br₂ Type-II Heterojunction for Photocatalytic Degradation of Organic Molecules

Generation of ^•OH and ^•O₂^– Radicals by a Bi₂O₃-Nanoparticle/Bi₄O₅Br₂ Type-II Heterojunction for Photocatalytic Degradation of Organic Molecules