High-efficiency V-Mediated Bi2MoO6 photocatalyst for PMS activation: Modulation of energy band structure and enhancement of surface reaction

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 339, С. 123149 - 123149

Опубликована: Авг. 6, 2023

Язык: Английский

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S-scheme Bi2O3/CdMoO4 hybrid with highly efficient charge separation for photocatalytic N2 fixation and tetracycline Degradation: Fabrication, catalytic Optimization, physicochemical studies

Separation and Purification Technology, Год журнала: 2023, Номер 325, С. 124665 - 124665

Опубликована: Июль 25, 2023

Язык: Английский

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One-step preparation of novel Bi-Bi2O3/CdWO4 Z-scheme heterojunctions with enhanced performance in photocatalytic NH3 synthesis

Journal of Alloys and Compounds, Год журнала: 2023, Номер 968, С. 171956 - 171956

Опубликована: Авг. 30, 2023

Язык: Английский

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Remarkably enhanced catalytic performance in CoOx/Bi4Ti3O12 heterostructures for methyl orange degradation via piezocatalysis and piezo-photocatalysis

Ultrasonics Sonochemistry, Год журнала: 2023, Номер 100, С. 106616 - 106616

Опубликована: Сен. 23, 2023

A novel heterojunction composite of CoOx/Bi4Ti3O12 was synthesized through a combination molten salt and photodeposition methods. The optimal sample exhibited superior performance in the piezocatalytic degradation methyl orange (MO) dye with rate 1.09 h−1, which 2.4 times higher than that pristine Bi4Ti3O12. Various characterizations were conducted to reveal fundamental nature accountable for outstanding CoOx/Bi4Ti3O12. investigation band structure indicated formed type-I p-n structure, CoOx acting as hole trapper effectively separate transfer piezogenerated carriers. Significantly, MO best further increased 2.96 h−1 under combined ultrasonic vibration simulated sunlight. synergy between piezocatalysis photocatalysis can be ascribed following factors. photoexcitation process ensures sufficient generation charge carriers CoOx/Bi4Ti3O12, while piezoelectric field within Bi4Ti3O12 promotes separation electron-hole pairs bulk phase. Furthermore, significantly facilitates surface This involvement free electrons holes reaction leads remarkable enhancement catalytic degradation. work contributes understanding coupling mechanism effect photocatalysis, also provides promising strategy development efficient catalysts wastewater treatment.

Язык: Английский

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Interfacial Chemical-Bonded MoS₂/In–Bi₂MoO₆ Heterostructure for Enhanced Photocatalytic Nitrogen-to-Ammonia Conversion

ACS Catalysis, Год журнала: 2024, Номер 14(8), С. 6292 - 6304

Опубликована: Апрель 10, 2024

Photocatalytic nitrogen reduction reaction (pNRR) is considered an ideal NH3 synthetic technology. Although catalysts prepared for pNRR under mild conditions have been extensively developed, they still face limitations of insufficient N2 adsorption/activation and low selectivity. Herein, a MoS2/In–Bi2MOO6 heterojunction catalyst with interfacial chemical bond was constructed by the electrostatic self-assembly method. Efficient spatial separation photogenerated electron/hole pairs accelerated carrier transfer dynamics were facilitated due to formation Mo–S at interface between MoS2 In–Bi2MoO6. The crystal orbital Hamiltonian population (COHP) analysis further confirmed that electrons transferred from into antibonding activate adsorbed N2, favoring nitrogen-to-ammonia (N2-to-NH3) conversion. resultant NH3/NH4+ production rate 3% MoS2/In–Bi2MoO6 reached 90 μmol·g–1·h–1, representing significant improvement over pure Bi2MoO6, while NO3– minimal. Introducing as cocatalyst effectively inhibited oxidation NO3–, achieving selective pNRR. This work provides foundation photocatalytic fixation, offering valuable insights clean NH3.

Язык: Английский

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Bi₄O₅Br₂ Nanoflower and CdWO₄ Nanorod Heterojunctions for Photocatalytic Synthesis of Ammonia

ACS Applied Nano Materials, Год журнала: 2023, Номер 6(17), С. 15709 - 15720

Опубликована: Авг. 29, 2023

In this study, a Bi4O5Br2/CdWO4 (BOB/CWO) composite photocatalyst was designed and prepared using convenient hydrothermal method. A detailed investigation carried out on the morphology, specific surface area, structure, optical properties, photoelectric chemical properties of BOB/CWO composite. The CdWO4 nanorods were found to disperse Bi4O5Br2 nanoflowers, their tight contact between resulted in formation heterojunction structure. By analysis band structure two semiconductors, it that worked type II mechanism, effectively improving separation efficiency electron–hole pairs. Therefore, exhibited high performance photocatalytic N2 fixation (PNF) reactions. optimal catalyst presents PNF rate 501 μmol L–1 g–1 h–1 under simulated sunlight irradiation, which 5.7 3.1 times pure Bi4O5Br2, respectively. Under visible-light illumination, sensitized coupling effect boosting reaction could still be observed. findings study are anticipated offer practical knowledge about design synthesis efficient photocatalysts for PNF.

Язык: Английский

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Greatly boosted photocatalytic N2-to-NH3 conversion by bismuth doping in CdMoO4: Band structure engineering and N2 adsorption modification

Separation and Purification Technology, Год журнала: 2023, Номер 314, С. 123554 - 123554

Опубликована: Март 10, 2023

Язык: Английский

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Oxygen-Defective Bi2MoO6/g-C3N4 hollow tubulars S-scheme heterojunctions toward optimized photocatalytic performance

Journal of Colloid and Interface Science, Год журнала: 2023, Номер 653, С. 1566 - 1576

Опубликована: Сен. 28, 2023

Язык: Английский

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Fabrication of novel BiPO4/Bi4O5Br2 heterojunctions for improving photoactivity in N2 fixation and dye degradation

Materials Research Bulletin, Год журнала: 2023, Номер 167, С. 112377 - 112377

Опубликована: Июнь 3, 2023

Язык: Английский

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Chalcogenide-based S-scheme heterojunction photocatalysts

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Год журнала: 2024, Номер 63, С. 81 - 108

Опубликована: Авг. 1, 2024

Язык: Английский

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