Enhancing Photocatalytic‐Transfer Semi‐Hydrogenation of Alkynes Over Pd/C₃N₄ Through Dual Regulation of Nitrogen Defects and the Mott–Schottky Effect

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(41)

Published: July 5, 2023

The selective hydrogenation of alkynes is an important reaction; however, the catalytic activity and selectivity in this reaction are generally conflicting. In study, ultrafine Pd nanoparticles (NPs) loaded on a graphite-like C3 N4 structure with nitrogen defects (Pd/DCN) synthesized. resulting Pd/DCN exhibits excellent photocatalytic performance transfer ammonia borane. rate superior to those Pd/BCN (bulk without defects) under visible-light irradiation. characterization results density functional theory calculations show that Mott-Schottky effect can change electronic NPs, thus enhances toward phenylacetylene. After 1 h, reaches 95%, surpassing (83%). Meanwhile, supports improve response accelerate separation photogenerated charges enhance Pd/DCN. Therefore, higher efficiency visible light, turnover frequency (TOF) 2002 min-1 . This TOF five times dark conditions 1.5 Pd/BCN. study provides new insights into rational design high-performance catalysts.

Language: Английский

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Returnable MoS2@carbon nitride nanotube composite hollow spheres drive photo-self-Fenton-PMS system for synergistic catalytic and photocatalytic tetracycline degradation

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 478, P. 147344 - 147344

Published: Nov. 13, 2023

Language: Английский

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A comprehensive review on the boosted effects of anion vacancy in the heterogeneous photocatalytic degradation, part I: Focus on sulfur, nitrogen, carbon, and halogen vacancies

Ecotoxicology and Environmental Safety, Journal Year: 2024, Volume and Issue: 269, P. 115927 - 115927

Published: Jan. 1, 2024

The greenest environmental remediation way is the photocatalytic degradation of organic pollutants. However, limited applications are due to poor sunlight absorption and photogenerated charge carriers' recombination. These limitations can be overcome by introducing anion vacancy (AV) (O, S, N, C, Halogen) defects in semiconductors that enhance light harvesting, facilitate separation, modulate electronic structure, produce reactive radicals. In continuing part A this review, part, we summarized recent AVs' research, including halogen vacancies on boosted features semiconductor materials, like metal oxides/sulfides, oxyhalides, nitrides detail. Also, outline recently developed AV designs for creating analysis methods mechanisms AV-mediated photocatalysts reviewed. engineering photocatalysts' challenges development prospects illustrated get a promising research direction.

Language: Английский

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Bandgap engineering of carbon nitride by formic acid assisted thermal treatment for photocatalytic degradation of tetracycline hydrochloride

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149830 - 149830

Published: Feb. 20, 2024

Language: Английский

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Biomass derived reduced-graphene-oxide supported α-Fe2O3/ZnO S-scheme heterostructure: Robust photocatalytic wastewater remediation

Journal of Environmental Management, Journal Year: 2023, Volume and Issue: 332, P. 117377 - 117377

Published: Feb. 3, 2023

Language: Английский

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Defects in photoreduction reactions: Fundamentals, classification, and catalytic energy conversion

eScience, Journal Year: 2024, Volume and Issue: 4(3), P. 100228 - 100228

Published: Jan. 6, 2024

Powered by optical energy, photocatalytic reduction for fuel production promises to be an ideal long-term solution a number of key energy challenges. Photocatalysts with enhanced light absorption, fast electron/hole separation rates, and exposed activity sites are essential improve efficiency. Semiconductors constrained their own intrinsic properties have limited performance in photocatalysis, but defect engineering provides opportunity modulate the physical chemical semiconductors. Defect has been shown effective regulating electron distribution accelerating kinetics during photocatalysis. This review introduces definition categorization defects, then explains main effects on photoabsorption, carrier separation/migration, surface reactions. We milestones design defect-engineered photocatalysts reactions, including hydrogen evolution, CO2 reduction, N2 tabulate respective catalytic performance. Finally, we provide insights perspectives challenges potential photoreduction

Language: Английский

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Seawater electrolysis for fuels and chemicals production: fundamentals, achievements, and perspectives

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(14), P. 7455 - 7488

Published: Jan. 1, 2024

Seawater electrolysis for the production of fuels and chemicals involved in onshore offshore plants powered by renewable energies offers a promising avenue unique advantages energy environmental sustainability. Nevertheless, seawater presents long-term challenges issues, such as complex composition, potential side reactions, deposition poisoning microorganisms metal ions, well corrosion, thus hindering rapid development technology. This review focuses on value-added (hydrogen beyond) fine through electrolysis, step towards sustainable carbon neutrality. The principle related are first introduced, redox reaction mechanisms summarized. Strategies operating anodes cathodes including application chloride- impurity-resistant electrocatalysts/membranes reviewed. We comprehensively summarize (hydrogen, monoxide, sulfur, ammonia,

Language: Английский

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Advances/Scope and prospects of g-C3N4 derived fascinating photocatalyst as a leading route towards solar energy adaption

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 438, P. 140568 - 140568

Published: Jan. 1, 2024

Language: Английский

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High-efficiency photocatalytic CO2 reduction enabled by interfacial Ov and isolated Ti3+ of g-C3N4/TiO2 Z-scheme heterojunction

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 663, P. 891 - 901

Published: March 2, 2024

Language: Английский

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Nitrogen-doped biochar/MnO2 as an efficient PMS activator for synergistic BPA degradation via non-free radical pathways in the water

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(2), P. 112446 - 112446

Published: March 8, 2024

Language: Английский

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