BiOCl Heterojunction photocatalyst: Construction, photocatalytic performance, and applications

Chemosphere, Journal Year: 2023, Volume and Issue: 317, P. 137823 - 137823

Published: Jan. 14, 2023

Language: Английский

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Unraveling Synergistic Effect of Defects and Piezoelectric Field in Breakthrough Piezo‐Photocatalytic N₂ Reduction

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(5)

Published: Aug. 28, 2023

Piezo-photocatalysis is a frontier technology for converting mechanical and solar energies into crucial chemical substances has emerged as promising sustainable strategy N

Language: Английский

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Transition metal bismuth spheres dispersed and anchored in benzene-ring-grafted porous g-C3N4 nanosheets for photocatalytic reduction of CO2

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 478, P. 147350 - 147350

Published: Nov. 17, 2023

Language: Английский

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Near infrared emissions from both high efficient quantum cutting (173%) and nearly-pure-color upconversion in NaY(WO4)2:Er3+/Yb3+ with thermal management capability for silicon-based solar cells

Light Science & Applications, Journal Year: 2024, Volume and Issue: 13(1)

Published: Jan. 16, 2024

Abstract Raising photoelectric conversion efficiency and enhancing heat management are two critical concerns for silicon-based solar cells. In this work, efficient Yb 3+ infrared emissions from both quantum cutting upconversion were demonstrated by adjusting Er concentrations, thermo-manage-applicable temperature sensing based on the luminescence intensity ratio of super-low thermal quenching levels was discovered in an /Yb co-doped tungstate system. The mechanism clearly decrypted as a two-step energy transfer process to . efficiencies, radiative nonradiative transition rates all interested 4 f NaY(WO ) 2 confirmed framework Föster-Dexter theory, Judd-Ofelt gap law, these obtained efficiencies furthermore determined be high 173% : 5 mol% /50 sample. Strong nearly pure emission under 1550 nm excitation achieved doping concentrations. induced enhancement attributed I 11/2 (Er + F 7/2 (Yb → 15/2 5/2 large relaxation rate 9/2 Analysis indicated that :Er serves well cells thermos-managing material. Moreover, it fluorescence H / S 3/2 caused All results suggest is excellent material improve management.

Language: Английский

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Polar Layered Bismuth‐Rich Oxyhalide Piezoelectrics Bi₄O₅X₂ (XBr, I): Efficient Piezocatalytic Pure Water Splitting and Interlayer Anion‐Dependent Activity

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(29)

Published: March 31, 2023

Abstract Piezocatalytic pure water splitting for H 2 evolution carries the virtues of efficacious utilization mechanical energy, easy operation, and high value‐added products, while lacking desirable piezoelectrics chemical energy production. Here, two polar layered bismuth‐rich oxyhalides Bi 4 O 5 X (XBr, I) thin nanosheets (≈4 nm) are first exploited as efficient piezocatalysts to be capable dissociating water. The unique asymmetrical structures composed interleaved [Bi ] 2+ layer double − ions slabs along [1 0 1_] orientation cause large intrinsic dipole moment, excellent piezoelectricity deformation. Without any cocatalyst sacrificial agent, Br I display remarkable piezocatalytic production rate 1149.0 764.5 µmol g −1 h , respectively, standing among best piezocatalysts, accompanied by hydroxyl radicals (·OH) oxidative products. smaller radius higher electronegativity than a more strongly crystal structure in contributing activity compared . This study broadens scope piezoelectric materials applied sustainable catalysis efficiently converting illustrates importance configuration composition fabricating systems.

Language: Английский

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SnFe ₂O ₄/ZnIn ₂S ₄/PVDF piezophotocatalyst with improved photocatalytic hydrogen production by synergetic effects of heterojunction and piezoelectricity

Journal of Advanced Ceramics, Journal Year: 2023, Volume and Issue: 12(9), P. 1685 - 1700

Published: April 24, 2023

The polarized electric field inside piezoelectric materials has been proved to be promising technique boost the photogenerated charge separation. Herein, a novel flexible SnFe₂O₄/ZnIn₂S₄/PVDF (P-SZ) film piezophotocatalyst was successfully synthesized by combining poly vinylidene fluoride (PVDF), an organic material, with SnFe₂O₄/ZnIn₂S₄ (SFO/ZIS) type II heterojunction photocatalyst. hydrogen evolution rate of SFO/ZIS SFO content 5% is about 846.79 μmol h^-1 g^-1, which 3.6 times higher than that pristine ZIS. Further, after being combined PVDF, optimum P-SZ 1652.7 g^-1 in presence ultrasound, exceeds 5%SFO/ZIS approximately factor 2.0. Based on experimental results, mechanism improved photocatalytic performance proposed basis PVDF and formed between ZIS, effectively boosted separation photoinduced charges. This work provides efficient strategy for multi-path collection utilization natural solar vibrational energy enhance photoactivity.

Language: Английский

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Visible light and iodate/iodide mediated degradation of bisphenol A by self-assembly 3D hierarchical BiOIO3/Bi5O7I Z-scheme heterojunction: Intermediates identification, radical mechanism and DFT calculation

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 448, P. 130908 - 130908

Published: Feb. 2, 2023

Language: Английский

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Defect Engineering of Bi₂WO₆ for Enhanced Photocatalytic Degradation of Antibiotic Pollutants

Small, Journal Year: 2024, Volume and Issue: 20(29)

Published: Feb. 9, 2024

Infiltration of excessive antibiotics into aquatic ecosystems plays a significant role in antibiotic resistance, major global health challenge. It is therefore critical to develop effective technologies for their removal. Herein, defect-rich Bi

Language: Английский

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Solar‐Driven Selective Oxidation Over Bismuth‐Based Semiconductors: From Prolific Catalysts to Diverse Reactions

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(27)

Published: March 4, 2024

Abstract Synthesis of organic compounds often necessitates rigorous reaction conditions or the involvement hazardous oxidants, resulting in substantial energy consumption and considerable environmental damage. Photocatalytic selective oxidation represents a green environmentally friendly way to obtain high‐value chemicals, which has developed rapidly recent years. Bismuth‐based (Bi‐based) semiconductor materials have gained intense interest synthesis due their diverse crystal structures compositions, tunable band structure, outstanding photocatalytic performance. Herein, systematic summary solar‐driven over varieties Bi‐based semiconductors is provided. Initially, reactive species involved oxidation, widely used methods for synthesizing these are meticulously classified. Concerning reactions, variety modification strategies, with focus on separation photogenerated carriers regulation extensively documented. Highlights applications mechanism discussions photocatalysts including alcohol C─H bond activation, amine sulfide as well coupling reactions photoreduction. Finally, future development prospects challenges field proposed, hoping provide valuable insights guidance design oxidation.

Language: Английский

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In-suit generated Cu-ligand inducing full-spectrum selective photocatalytic degradation of organic pollutants containing phenol groups over Cu doping BiO2-x nanosheet: The synergistic effects of Cu-ligand and oxygen vacancies, and mechanism study

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 499, P. 155810 - 155810

Published: Sept. 16, 2024

Language: Английский

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