Non‐Metal Sulfur Doping of Indium Hydroxide Nanocube for Selectively Photocatalytic Reduction of CO₂ to CH₄: A “One Stone Three Birds” Strategy

Advanced Science, Journal Year: 2024, Volume and Issue: 11(30)

Published: June 13, 2024

Photocatalytic CO

Language: Английский

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Poly(triazine imide) Crystals for Efficient CO₂ Photoreduction: Surface Pyridine Nitrogen Dominates the Performance

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 1018 - 1026

Published: Jan. 2, 2025

Polymeric carbon nitrides (PCNs), usually the melon phase, have been extensively applied as photocatalysts for CO2 reduction; however, their performance is still unsatisfactory. The condensed allotrope, namely, poly(triazine imide) (PTI) with extended conjugation and a crystallized structure, indeed holds more favorable compositional structural advantages photocatalytic reduction but remains to be fully exploited. Herein, hexagonal prism-shaped PTI crystals were synthesized developed high-performance photocatalyst reduction. With Co(bpy)32+ cocatalyst, exhibit CO evolution rate of 44 μmol h–1 (i.e., 1467 g–1 h–1) 93% selectivity, markedly superior that counterpart. Moreover, manifest an apparent quantum efficiency 12.9% at 365 nm, representing state-of-the-art value by PCN CO2-to-CO without using noble metals. surface pyridine N species are exposed active sites dominate activation conversion, which, together high crystallinity facilitate charge separation transport, endows efficiency. In situ diffuse reflectance infrared Fourier transform spectroscopy determines key intermediates during reaction and, consequently, constructs possible mechanism.

Language: Английский

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Surface Phosphorus Grafting of Ti₃C₂T_x MXene as an Interface Charge “Bridge” for Efficient Electrocatalytic Hydrogen Evolution in All-pH Media

Chemistry of Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

The interface electronic structure of heterogeneous catalysts can be modulated by changing the surface coordination configuration, which is crucial to their catalytic activity. Herein, a phosphorus-grafted Ti3C2Tx MXene platform anchored with an MoS2 nanoflake heterojunction electrocatalyst was assembled through simple phosphorus-hydrothermal method. An charge "bridge" has been created grafting uniform P atoms coordinated O (P-Ti3C2Tx), resulting in charge-transfer channel between P-Ti3C2Tx and MoS2. Based on ultrafast transient absorption spectroscopy, fastest electron-transfer kinetics from (1.7 ps) slowest electron–hole recombination speed (28 were obtained over MoS2@P-Ti3C2Tx than those MoS2@O-Ti3C2Tx MoS2@OP-Ti3C2Tx. Benefiting lower carrier transport activation energy, exhibited stirring electrocatalytic activity toward hydrogen evolution all-pH media, delivered three low overpotentials 48.6, 63.2, 70.5 mV at 10 mA cm–2 alkaline, acid, neutral respectively. Grafting atomic scale create proposes new strategy design efficient pH-universal electrocatalyst.

Language: Английский

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Promoting photothermal catalytic N2 reduction through dynamic mass transfer and accelerated charge transfer dynamics

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154832 - 154832

Published: Aug. 13, 2024

Language: Английский

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Understanding and Tuning the Effects of H₂O on Catalytic CO and CO₂ Hydrogenation

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(21), P. 12006 - 12085

Published: Oct. 31, 2024

Catalytic COx (CO and CO2) hydrogenation to valued chemicals is one of the promising approaches address challenges in energy, environment, climate change. H2O an inevitable side product these reactions, where its existence effect are often ignored. In fact, significantly influences catalytic active centers, reaction mechanism, performance, preventing us from a definitive deep understanding on structure-performance relationship authentic catalysts. It necessary, although challenging, clarify provide practical strategies tune concentration distribution optimize influence. this review, we focus how induces structural evolution catalysts assists processes, as well efforts understand underlying mechanism. We summarize discuss some representative tuning for realizing rapid removal or local enrichment around catalysts, along with brief techno-economic analysis life cycle assessment. These fundamental understandings further extended reactions CO CO2 reduction under external field (light, electricity, plasma). also present suggestions prospects deciphering controlling applications.

Language: Английский

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Aeration‐Free Photo‐Fenton‐Like Reaction Mediated by Heterojunction Photocatalyst toward Efficient Degradation of Organic Pollutants

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 15, 2024

The regulation of peroxymonosulfate (PMS) activation by photo-assisted heterogeneous catalysis is under in-depth investigation with potential as a replaceable advanced oxidation process in water purification, yet it remains significant challenge. Herein, we demonstrate strategy to construct polyethylene glycol (PEG) well-coupled dual-defect V

Language: Английский

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In situ construction of Ohmic/Schottky-type MoS₂/S_v-ZnIn₂S₄/Cu(OH)₂ dual-junction photocatalysts with enhanced water splitting into hydrogen generation activity

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(24), P. 14646 - 14658

Published: Jan. 1, 2024

Multichannel-optimized MoS 2 /Sv-ZnIn S 4 /Cu(OH) composites, integrating sulfur vacancy, Ohmic junction and Schottky junction, were synthesized by an in situ technique. Benefiting from the synergistic effect, staggered composites exhibited enhanced photocatalytic hydrogen production activity.

Language: Английский

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Constructing a Z-scheme β-Bi2O3/g-C3N4 heterojunction with enhancing photocatalytic activity for sulfamethoxypyridazine degradation

Materials Science in Semiconductor Processing, Journal Year: 2025, Volume and Issue: 189, P. 109273 - 109273

Published: Jan. 12, 2025

Language: Английский

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Ascorbic Acid-Assisted Morphology Tailoring of Crystalline Bi2WO6 for the Application in CO2 Photoreduction

International Journal of Precision Engineering and Manufacturing-Green Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Language: Английский

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Enhanced photocatalytic CO2 reduction in floatable CMF/Bi2WO6/C3N4 gas-liquid-solid three-phase heterojunction system

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125395 - 125395

Published: April 1, 2025

Language: Английский

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