Materials Horizons, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
This review summarizes recent advances in the modification strategies of 2D materials for photocatalytic H 2 O production and its situ applications. Additionally, existing challenges this field potential solutions are discussed.
Язык: Английский
Advanced Functional Materials, Год журнала: 2023, Номер 34(12)
Опубликована: Дек. 6, 2023
Abstract As a chemical product with rapidly expanding demand in the field of modern energy and environmental applications, hydrogen peroxide (H 2 O ) has garnered widespread attention. However, existing industrial production H is plagued by high consumption, harmful waste emission, severe safety issues, making it difficult to satisfy environmental/economic concept. Artificial photosynthesis offers viable strategy for green sustainable since uses sunlight as an source initiate reaction oxygen water produce . Among various photocatalysts, covalent organic frameworks (COFs), featuring highly ordered skeletons well‐defined active sites, have emerged promising photocatalysts production. This review presents nascent burgeoning area photocatalytic based on COFs. First, brief overview technology provided, followed detailed introduction principles evaluation generation. Subsequently, latest research progress judicious design COFs expounded, particular emphasis manipulating electronic structures redox sites. Finally, outlook challenges future opportunities proposed, hope stimulating further explorations novel molecular‐designed photosynthesis.
Язык: Английский
Процитировано
85
Advanced Energy Materials, Год журнала: 2024, Номер 14(23)
Опубликована: Апрель 3, 2024
Abstract Solar energy can be utilized in photocatalysis technology to realize light‐driven hydrogen peroxide (H 2 O ) production, a green chemical synthesis route. Designing high‐performance photocatalysts is critical achieving practical solar H production. During the past decade, significant research progress made photocatalytic materials for Particularly 2D materials‐based stand out due their unique physical and properties. This review highlights intricate relationship between material innovation photochemical It starts with fundamental principles of generation, focusing on crucial steps such as photon absorption, carrier dynamics, surface reactions, challenges that solve at each step. Then, various production are introduced detail. Engineering strategies optimize performance discussed afterward. Finally, future opportunities designing outlined. expected inspire engineering conversion other chemicals.
Язык: Английский
Процитировано
66
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(21)
Опубликована: Март 16, 2024
The artificial photosynthesis of H
Язык: Английский
Процитировано
59
Advanced Energy Materials, Год журнала: 2023, Номер 14(5)
Опубликована: Дек. 11, 2023
Abstract The development of efficient photocatalysts for artificial photocatalytic energy conversion is an intriguing strategy. Promisingly, conjugated polymers (CPs) have been actively investigated as alternatives to traditional inorganic semiconductors photocatalysis due their molecularly tunable optoelectronic properties, thus providing a great platform molecular design. Incorporating donor (D) and acceptor (A) units into the backbone CPs ensures adequate D−A interface, which essential facilitating charge separation. This approach also allows bandgaps leading significant progress in conversions recent years. Here, fundamentals D–A type are initially outlined, followed by advanced experimental methods density functional theory (DFT) calculations investigating carrier dynamics. Then, detailed exposition synthetic strategies carried out. Their extensive applications diverse energy‐related conversions, such hydrogen evolution, oxygen overall water splitting, CO 2 reduction, N H O evolution comprehensively presented. review provides new comprehensive insights molecular‐level design catalysts boosted conversion, expected further advance photocatalysis.
Язык: Английский
Процитировано
43
Advanced Energy Materials, Год журнала: 2024, Номер 14(40)
Опубликована: Июль 18, 2024
Abstract The integration of electron donor (D) and acceptor (A) units into covalent organic frameworks (COFs) has received increasing interest due to its potential for efficient photocatalytic hydrogen (H 2 ) evolution from water. Nevertheless, the advancement D–A COFs is still constrained by limited investigations on engineering, which enables highly effective charge transfer pathways in deliver photoexcited electrons a preferential orientation enhance performance. Herein, two systems with D–A–A configurations based molecular engineering strategy are proposed construct three distinct COFs. Specifically, TAPPy‐DBTDP‐COF merging one pyrene‐based benzothiadiazole acceptors realized an average H rate 12.7 mmol h −1 g under visible light, among highest ever reported typical D–A‐type COF systems. combination experimental theoretical analysis signifies crucial role dual‐acceptor arrangement promoting exciton dissociation carrier migration. These findings underscore significant structural design, conducive separation holes resulting superior activities.
Язык: Английский
Процитировано
25
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(20)
Опубликована: Март 21, 2024
Abstract Memristors are essential components of neuromorphic systems that mimic the synaptic plasticity observed in biological neurons. In this study, a novel approach employing one‐dimensional covalent organic framework (1D COF) films was explored to enhance performance memristors. The unique structural and electronic properties two 1D COF (COF‐4,4′‐methylenedianiline (MDA) COF‐4,4′‐oxydianiline (ODA)) offer advantages for multilevel resistive switching, which is key feature computing applications. By further introducing TiO 2 layer on COF‐ODA film, built‐in electric field between COF‐TiO interfaces could be generated, demonstrating feasibility utilizing COFs as platform constructing memristors with tunable states. nanochannels these structures contributed efficient modulation electrical conductance, enabling precise control over weights circuits. This study also investigated potential COF‐based achieve energy‐efficient high‐density memory devices.
Язык: Английский
Процитировано
23
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(29)
Опубликована: Май 6, 2024
Abstract Despite the pivotal role of molecular oxygen (O 2 ) activation in artificial photosynthesis, efficiency is often restricted by sluggish exciton dissociation and charge transfer kinetics within polymer photocatalysts. Herein, we propose two tetrathiafulvalene (TTF)‐based imine‐linked covalent organic frameworks (COFs) with tailored donor‐acceptor (D–A) structures, TTF‐PDI‐COF TTF‐TFPP‐COF, to promote O activation. Because enhanced electron push‐pull interactions that facilitated separation behavior, exhibited superior photocatalytic activity electron‐induced reactions over TTF‐TFPP‐COF under visible light irradiation, including photosynthesis ( E )‐3‐amino‐2‐thiocyano‐ α , β ‐unsaturated compounds H . These findings highlight significant potential rational design COFs D–A configurations as suitable candidates for advanced applications.
Язык: Английский
Процитировано
22
Advanced Functional Materials, Год журнала: 2024, Номер 34(29)
Опубликована: Март 14, 2024
Abstract Porous organic polymers have an outstanding performance in the field of photocatalysis with advantage diverse structure composition and purposeful molecular design. However, inherent high impedance poor electrical conductivity semiconductors still restrict charge transfer efficiency thus discount photocatalytic performance. Herein, study reports a highly conductive covalent triazine framework (CTF) loading carbon quantum dots (CQDs) into porous as electron transport medium. The addition CQDs (0.5 wt%) can enhance electronic CTF by tenfold. In addition, as‐prepared CQD‐CTFs express much‐promoted separation efficiency. Furthermore, embedded improve oxidization capacity increase affinity H + due to more negative zeta potential. enhanced oxidizing ability increased are positive for water oxidation reaction (WOR) oxygen reduction (ORR) process hydrogen peroxide (H 2 O ) generation, respectively. optimized CQD‐CTF exhibits generation rate up 1036 µmol g −1 h pure without any sacrificial agent under visible light, which is 4.6 times than pristine CTF. This work provides new idea efficient production semiconductors.
Язык: Английский
Процитировано
20
Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown
Опубликована: Авг. 20, 2024
Photocatalytic synthesis of H
Язык: Английский
Процитировано
17
Advanced Functional Materials, Год журнала: 2024, Номер 34(23)
Опубликована: Фев. 14, 2024
Abstract Triboelectric nanogenerator (TENG) has emerged as a novel nanotechnology for energy harvesting and self‐powered sensing via utilizing various low‐frequency mechanical energies throughout the surrounding environment. However, designing TENG with high physical robustness, flexibility, output performance is rather challenging. This study develops monolithic conjugated microporous polymer aerogel (CMPA) delocalized π‐conjugation to construct robust porous structure. The as‐produced CMPA composed of hollow intertwined nanotubes degree flexibility specific surface area (up 528 m 2 g −1 ). Due its intrinsic nature electron transfer architectural characteristics, CMPA‐based (effective area: 4.9 cm ) shows sensitivity force excellent electric (open‐circuit voltage: 72 V, short‐circuit peak current: 3.2 µA transferred charge: 48 nC). Moreover, can charge micro‐electronic devices sense human motions. work will inspire design aerogel‐based electronic management renewable resources.
Язык: Английский
Процитировано
16