ACS Applied Energy Materials, Год журнала: 2025, Номер unknown
Опубликована: Апрель 4, 2025
Язык: Английский
Macromolecular Rapid Communications, Год журнала: 2025, Номер unknown
Опубликована: Фев. 12, 2025
Abstract Photocatalytic production of hydrogen peroxide (H 2 O ) represents a significant approach to achieving sustainable energy generation through solar energy, addressing both shortages and environmental pollution. Among various photocatalytic materials, covalent organic frameworks (COFs) have gained widespread attention in‐depth research due their unique advantages, including high porosity, predesignability, atomic‐level tunability. In recent years, progress has been made in the development, performance enhancement, mechanistic understanding COF‐based photocatalysts. This review focuses on latest advancements H using COFs, particularly emphasizing rational design COF structures regulate catalytic exploring fundamental processes involved photocatalysis. Based current achievements this field, paper also discusses existing challenges future opportunities, aiming provide reference for application COFs production.
Язык: Английский
Процитировано
1
Frontiers in Energy, Год журнала: 2025, Номер unknown
Опубликована: Фев. 28, 2025
Язык: Английский
Процитировано
1
Advanced Science, Год журнала: 2025, Номер unknown
Опубликована: Фев. 18, 2025
Abstract Cyano‐functionalized sp 2 ‐carbon‐conjugated covalent organic frameworks (CN‐COFs) have been considered as promising candidates for artificial photosynthesis of hydrogen peroxide (H O ). Nevertheless, the performance CN‐COFs is inherently limited by constrained oxygen capture capacity, insufficient charge separation, and rapid carrier recombination. Herein, study rationally reports a strategy integrating amidoxime groups (AO) into COF through one‐step cyano hydrolysis process to increase photocatalytic H production. Combined simulations characterizations reveal that introducing AO enhances hydrophilicity, stabilizes adsorbed Oxygen (O ) via bonding, accelerates separation transfer, well lowers energy barrier reduction reaction pathway, thus achieving an unmatched production rate 6024 µmol h −1 g . Importantly, solar‐to‐chemical conversion (SCC) efficiency PTTN‐AO reaches 0.61%, significantly surpassing natural plants (≈0.1%) most COF‐based photocatalysts. The current findings are encouraging molecular design polymers green efficient
Язык: Английский
Процитировано
0
Small, Год журнала: 2025, Номер unknown
Опубликована: Март 5, 2025
Semiconducting oxynitrides are attractive candidates for producing solar hydrogen, while the abundant defects evolved during harsh nitridation synthesis and unfavorable charge transfer properties of restrict solar-to-hydrogen conversion. Herein, by virtue high-entropy design, a single-phase oxynitride {LaSmPrNdGd}TiO2N (HE-LnTiO2N) is presented toward alleviating these issues first time. It found that HE-LnTiO2N can be obtained at milder conditions than those conventional one-element oxynitrides, which beneficial to inhibiting formation reduced Ti3+ act as recombination centers. Moreover, combined contribution multiple lanthanide elements modifies electronic structures HE-LnTiO2N, thus enhancing efficiency. Consequently, photocatalytic hydrogen evolution activity achieved on two times representative SmTiO2N under visible light irradiation. This study highlights efficacy great potential design optimizing materials enhanced energy
Язык: Английский
Процитировано
0
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Фев. 28, 2025
Abstract Poly (triazine imide) (PTI), a crystalline allotrope of polymeric carbon nitride, holds great promise for photocatalytic overall water splitting (OWS). However, previous results reveal that both H 2 and O evolution cocatalysts prefer to deposit on the prismatic facets, which in undesired backward reaction current unsatisfied quantum efficiency OWS reaction. Herein, situ decoration with heptazine based nitride (HCN) at interface PTI is successfully employed construct S‐scheme hetero‐phase junctions. The built‐in electric field HCN endows directed carrier separation, thereby enabling separation redox sites, as validated by theoretical experimental results. Accordingly, as‐synthesized PTI/HCN spatially separated charge carriers restrained achieves solar‐to‐hydrogen energy conversion 0.35%
Язык: Английский
Процитировано
0
Langmuir, Год журнала: 2025, Номер unknown
Опубликована: Март 13, 2025
The construction of heterostructures promotes extending the light adsorption range graphitic carbon nitride (g-C3N4) materials, improving photogenerated charge carrier separation/transfer efficiency for attaining much enhanced performances. Because defective tungsten oxide (WOx) materials possess rich composition/morphology and an extended response in near-infrared region, WOx is a quite popular nanocomponent modifying g-C3N4, forming that can be used various photocatalytic applications involving water splitting, CO2 reduction, NOx removal, H2O2 generation, related chemical to fuel conversion reactions. In this review, important aspects WOx/g-C3N4 heterostructure photocatalysts are reviewed provide paradigms composition adjustment, structural design, these materials. growth control amorphous crystalline adjustment on types (e.g., type II Z-scheme), catalytic performances composite system also discussed detail. Moreover, effects synthetic methodologies preparation parameters formation two-dimensional layered inspiration state-of-the-art utilized photoredox challenges prospects future research summarized.
Язык: Английский
Процитировано
0
ACS Applied Energy Materials, Год журнала: 2025, Номер unknown
Опубликована: Апрель 4, 2025
Язык: Английский
Процитировано
0