Synthesize magnetic ZnFe2O4@C/Cd0.9Zn0.1S catalysts with S-scheme heterojunction to achieve extraordinary hydrogen production efficiency

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 657, P. 672 - 683

Published: Dec. 1, 2023

Language: Английский

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Bi₄O₅Br₂ Nanoflower and CdWO₄ Nanorod Heterojunctions for Photocatalytic Synthesis of Ammonia

ACS Applied Nano Materials, Journal Year: 2023, Volume and Issue: 6(17), P. 15709 - 15720

Published: Aug. 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.

Language: Английский

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

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(8), P. 6292 - 6304

Published: April 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.

Language: Английский

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Enhanced piezocatalytic and piezo-photocatalytic dye degradation via S-scheme mechanism with photodeposited nickel oxide nanoparticles on PbBiO2Br nanosheets

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 670, P. 373 - 384

Published: May 16, 2024

Language: Английский

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A novel S-scheme photocatalyst Fe2O3/Bi2O3/g-C3N4 with enhanced visible-light photocatalytic performance for antibiotic degradation and CO2 reduction: RSM-based optimization

Journal of Industrial and Engineering Chemistry, Journal Year: 2024, Volume and Issue: 140, P. 599 - 616

Published: Aug. 10, 2024

Language: Английский

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Enhanced photocatalytic nitrogen fixation on Cu2O clusters/MIL-100(Fe) heterojunction

Applied Surface Science, Journal Year: 2023, Volume and Issue: 640, P. 158443 - 158443

Published: Sept. 9, 2023

Language: Английский

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Advances in S-scheme heterojunction semiconductor photocatalysts for CO2 reduction, nitrogen fixation and NOx degradation

Materials Science in Semiconductor Processing, Journal Year: 2023, Volume and Issue: 168, P. 107869 - 107869

Published: Sept. 29, 2023

Language: Английский

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TiO₂ Quantum Dots/Fe₃S₄ Heterojunction Nanocomposites for Efficient Ammonia Production through Nitrogen Fixation upon Simulated Sunlight

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(2), P. 2200 - 2213

Published: Jan. 4, 2024

Using semiconductor photocatalysts instead of the traditional Haber–Bosch procedure to produce ammonia is a promising strategy save energy and prevent environmental pollution. Therefore, finding suitable photocatalyst with high efficiency stability has become one big challenges research communities in field heterogeneous photocatalysis. Herein, S-scheme TiO2 quantum dots (QDs)/Fe3S4 heterojunction were synthesized through hydrothermal route. The nitrogen photofixation measurements exhibited that QDs/Fe3S4 have excellent activities, where generation NH3 by optimized nanocomposite reached 16,624 μmol L–1 g–1 upon simulated sunlight. This amount was almost 19.9, 6.30, 2.85 times as those TiO2, QDs, Fe3S4 photocatalysts, respectively. promoted photocatalytic ability devoted outstanding visible-light absorption, accelerated segregation photoinduced electron–hole pairs, enhanced surface area. key purpose this rational design based on QDs one-pot facile fabrication procedure, which exhibits admirable performance fixation. Considering advantages binary it anticipated could be utilized solar conversion processes.

Language: Английский

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A novel sunlight driven Z scheme ZnCdS QDs deposited over g-C3N4 photocatalyst for photoinactivation of E. coli cells

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 59, P. 104957 - 104957

Published: Feb. 13, 2024

Language: Английский

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Triple S-scheme BiOBr@LaNiO3/CuBi2O4/Bi2WO6 heterojunction with plasmonic Bi-induced stability: deviation from quadruple S-scheme and mechanistic investigation

Advanced Composites and Hybrid Materials, Journal Year: 2024, Volume and Issue: 7(5)

Published: Oct. 1, 2024

Language: Английский

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