Structurally and Surficially Activated TiO2 Nanomaterials for Photochemical Reactions

Nanoscale, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

This review highlights recent advancements in TiO 2 photocatalysts, emphasizing key strategies to enhance their performance for environmental remediation and energy conversion technologies.

Язык: Английский

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Photocatalytic Upgrading of Plastic Waste into High-Value-Added Chemicals and Fuels: Advances and Perspectives

ACS Sustainable Chemistry & Engineering, Год журнала: 2025, Номер unknown

Опубликована: Фев. 13, 2025

Язык: Английский

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Toward Maximizing the Ag–CeO₂ Interface and Rich Oxygen Vacancies for Efficient Photocatalytic Oxidation of 5-Hydroxymethylfurfural

ACS Sustainable Chemistry & Engineering, Год журнала: 2025, Номер unknown

Опубликована: Янв. 8, 2025

In the pursuit of high-selective oxidation 5-hydroxymethylfurfural (HMF) to valuable derivatives such as 5-hydroxymethylfuroic acid (HMFCA), 5-formyl-2-furanoic (FFCA), and furan-2,5-dicarboxylic (FDCA), we have developed a diethylenetriamine pentaacetic (DTPA)-assisted strategy construct highly effective photothermal catalyst with maximized Ag–CeO2 interfaces rich oxygen vacancies. Under optimal reaction conditions, this achieves remarkable yields 99% for HMFCA, FFCA turnover frequency (TOF) 163 h–1, 98% FDCA. Combined theoretical calculations series characterization analyses reveal that superior performance is due unique properties vacancies, which enhance electron transport synergistically catalytic activity silver clusters. contrast other photocatalytic systems HMF, work showcases high selectivity in HMF FFCA, These findings not only elucidate mechanisms behind selective but also offer promising approach directional photosynthesis high-purity chemicals related applications.

Язык: Английский

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Selective Liquid Chemical Production in Waste Polyolefin Photorefinery by Controlling Reactive Species

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Янв. 29, 2025

Photocatalytic upcycling of waste polyolefins into value-added chemicals provides promise in plastic management and resource utilization. Previous works demonstrate that can be converted carboxylic acids, with CO2 as the final oxidation product. It is still challenging to explore more transformation products, particularly mild-oxidation products such alcohols, because their instability compared polymer substrates, which are prone during catalytic reactions. In this work, we propose an efficient strategy regulate product type through precise control radicals, intermediates, reaction paths. Taking commonly used photocatalyst C3N4 example, its major acids CO2. When MoS2 introduced construct a Z-scheme heterostructure, gas significantly reduced alcohols appear high yield 1358.8 μmol gcat-1 selectivity up 80.3%. This primarily attributed presence •OH radicals from oxygen reduction, acting key role alcohol formation while simultaneously suppressing competing pathways •O2- 1O2, thus reducing overoxidation products. The β-scission C-C bonds chains generates intermediate alkyl species, followed by combination produce methanol, energetically favorable for MoS2/C3N4. contrast, species couple form formic acid, C3N4. work new approaches controlling types offers insights involved polyolefin photorefinery.

Язык: Английский

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Coupling Plastic Upgrading and Photocatalysis: Catalytic Mechanisms and Design Principles

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 5339 - 5369

Опубликована: Март 17, 2025

Язык: Английский

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Fabricating a Z-Scheme Heterojunction of CTF@Cs₃Sb₂Br₉ Nanocomposites for Enhanced and Selective Photocatalytic Oxidation of Benzyl Alcohol

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 28, 2025

The selective oxidation of benzyl alcohols to the corresponding aldehydes is a highly desirable transformation, but significant challenges remain. Herein, we report simultaneous-promotion strategy for redox capacities that involves fabrication an environmentally friendly, lead-free Cs3Sb2Br9 nanocrystals (NCs)-based Z-scheme heterojunction. NCs were grown on covalent triazine framework (CTF) nanosheets through ligand-assisted reprecipitation. resulting CTF@Cs3Sb2Br9 consisted homogeneous (15 nm) attached surface CTF. Importantly, nanocomposite significantly enhanced spatial charge separation, thereby in unprecedented photocatalytic efficiency and selectivity alcohol. Especially, exhibited 100% up 66.4% conversion benzaldehyde alcohol under ultraviolet light illumination. These results exceed previously reported conversions reactions therefore broaden applications friendly perovskite-based photocatalysts.

Язык: Английский

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Singlet‐Oxygen‐Driven Cooperative Photocatalytic Coupling of Biomass Valorization and Hydrogen Peroxide Production Using Covalent Organic Frameworks

Angewandte Chemie, Год журнала: 2025, Номер unknown

Опубликована: Март 11, 2025

Abstract Traditional H 2 O photocatalysis primarily depends on photoexcited electrons and holes to drive oxygen reduction water oxidation, respectively. However, singlet ( 1 ), often underappreciated, plays a pivotal role in production. Meanwhile, photocatalytic biomass conversion has attracted attention, yet studies combining synthesis with valorization remain rare typically yield low‐value products. Herein, strategy of furfuryl alcohol (FFA) coupled the efficient co‐production is reported, enabled by covalent organic frameworks (COFs) induced, ‐participated Achmatowicz rearrangement. This study introduces polyimide‐based COF‐N 0‐3 tailored nitrogen content, representing an unprecedently platform for Remarkably, reducing content COF enhances production, significantly boosting generation rate. In FFA, primary pathway production rearrangement, achieving rate ten times higher than that reliant reaction pure water, reaching 4549 µmol g⁻¹ h⁻¹. Mechanism revealed selectively engaged bypassing hole oxidation trigger producing valuable 6‐hydroxy‐(2H)‐pyranone 99% 92% selectivity. work establishes coupling simultaneous biochemicals, offering transformative approach sustainable photocatalysis.

Язык: Английский

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2D/2D CdS/1T-MoS2 heterojunctions with abundant interfacial sulfur vacancies for high-efficient photocatalytic amino acid synthesis from bio-based feedstocks

Applied Catalysis B Environment and Energy, Год журнала: 2025, Номер unknown, С. 125371 - 125371

Опубликована: Апрель 1, 2025

Язык: Английский

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Photo-induced enhancement of hydrogenation activity for ruthenium nanoparticles immobilized on carbon dots

Green Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Under light irradiation, CDs act as electron reservoirs for Ru NPs, thereby enhancing their hydrogenation activity.

Язык: Английский

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Solar refinery: a disruptive strategy for upcycling plastic wastes

Science China Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 12, 2025

Язык: Английский

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