Rational Design of Covalent Organic Frameworks as Photocatalysts for Water Splitting DOI
Zhen Li,

Chengcheng Liu,

Qiwen Deng

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 1, 2024

Abstract Photocatalytic water splitting for hydrogen production represents a crucial approach obtaining green energy through artificial solar utilization, offering sustainable method generation that helps mitigate shortages and protect the environment. Among numerous photocatalytic materials, covalent organic frameworks (COFs) have garnered significant attention intensive study from researchers due to their distinctive benefits, such as porosity, pre‐design capability, tunability at atomic level. Significant advancements are made in development of enhancement performance, comprehension mechanisms. In this review, recent COF‐based spotlighted, both half‐reactions overall reactions, with particular emphasis on rational design COF structures regulate materials' optical electrical properties, well fundamental processes photocatalysis. Drawing current research field, existing challenges, potential opportunities also discussed future development.

Language: Английский

Artificial Photosynthetic System with Spatial Dual Reduction Site Enabling Enhanced Solar Hydrogen Production DOI
Xiaowen Ruan,

Depeng Meng,

Chengxiang Huang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(9)

Published: Nov. 28, 2023

Abstract Although S‐scheme artificial photosynthesis shows promise for photocatalytic hydrogen production, traditional methods often overly concentrate on a single reduction site. This limitation results in inadequate redox capability and inefficient charge separation, which hampers the efficiency of evolution reaction. To overcome this limitation, double system is proposed that leverages dual sites, thereby preserving energetic photo‐electrons holes to enhance apparent quantum efficiency. The design features junction consisting CdS nanospheres decorated with anatase TiO 2 nanoparticles coupled graphitic C 3 N 4 . as‐prepared catalyst exhibits rate 26.84 mmol g −1 h an 40.2% at 365 nm. enhanced ascribed efficient separation transport induced by S‐scheme. Both theoretical calculations comprehensive spectroscopy tests (both situ ex situ) affirm across interface. Moreover, substituting reduction‐type other similar sulfides like ZnIn S , ZnS, MoS In further confirms feasibility configuration. findings provide pathway designing more effective photosynthetic systems, opening up fresh perspectives enhancing performance.

Language: Английский

Citations

66
Structural Motifs in Covalent Organic Frameworks for Photocatalysis DOI

Liyang Qin,

Chengdi Ma,

Jian Zhang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: March 10, 2024

Abstract Covalent organic frameworks (COFs) attract significant attention due to their ordered, crystalline, porous, metal‐free, and predictable structures. These unique characteristics offer great opportunities for the diffusion transmission of photogenerated charges during photocatalysis. Currently, a considerable number COFs are used as metal‐free semiconductor photocatalysts. This review aims understand relationships between structure photocatalysis performance provides in‐depth insight into synthetic strategy improve performance. Subsequently, focuses on structural motif in sustainable photocatalytic hydrogen evolution, carbon dioxide reduction, peroxide generation, compound transformations. Last, conjunction with progress achieved challenges yet be overcome, candid discussion is undertaken regarding field COF photocatalysis, accompanied by presentation potential research avenues future directions. seeks provide readers comprehensive understanding pivotal role robust guidance innovative utilization

Language: Английский

Citations

66
2D semiconductor nanosheets for solar photocatalysis DOI Creative Commons
Cai Meng,

Yixin Wei,

Yukun Li

et al.

EcoEnergy, Journal Year: 2023, Volume and Issue: 1(2), P. 248 - 295

Published: Dec. 1, 2023

Abstract In the advancing world of graphene, highly anisotropic 2D semiconductor nanosheets, notable for their nanometer‐scale thickness, have emerged as a leading innovation, displaying immense potential in exploration renewable and clean energy production. These garnered significant attention from researchers. The nanosheets are marked by extraordinary electronic, optical, chemical attributes, positioning them attractive foundational components heterogeneous photocatalysts. This review diligently summarizes both seminal work ongoing developments pertaining to application solar within context photocatalysis. We begin detailing distinctive properties concentrating on pivotal roles augmenting photocatalytic efficiency, explaining intrinsic mechanisms that govern migration rate photogenerated carriers material's surface. Subsequently, we delineate methods employed synthesize typical nanosheets. alignment with overarching objective expanding light absorption capacity accelerating charge transfer, also examine current research hybridization techniques involving materials varied dimensions, well deployment diverse applications. conclude identifying promising avenues challenges await further this burgeoning field.

Language: Английский

Citations

63
Construction of a 2D/2D Crystalline Porous Materials Based S‐Scheme Heterojunction for Efficient Photocatalytic H2 Production DOI Creative Commons

Haijun Hu,

Xinyu Zhang, Kailai Zhang

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(11)

Published: Jan. 7, 2024

Abstract Generally, the low electron–hole separation efficiency of covalent organic frameworks (COFs) prevents their catalytic performance from reaching satisfactory results. For this reason, creation heterojunctions is considered an effective strategy but usually suffers dimensional mismatch integrated material, even at expense its redox capacity. To overcome these difficulties, a novel 2D/2D S‐scheme heterojunction between H 2 N–Cu–MOF (NCM) and TpPa–1–COF (TP1C) successfully constructed for efficient photocatalytic production. The matching dimensions two crystalline porous materials enables with abundant surface reactive sites, strong interaction optimized electronic structure. Moreover, combination can also form S–scheme heterojunction, which not only promote pair, preserve ability, thus remarkably boosting competence. Consequently, rate optimal 20% NCM/TP1C in production reaches 4.19 mmol g −1 h , 46.5 times higher than that bare NCM, 22.1 folds over pure TP1C. This research offers innovative perspective formation based on crystal solar energy utilization.

Language: Английский

Citations

54
Recent progress on S-scheme heterojunction strategy enabling polymer carbon nitrides C3N4 and C3N5 enhanced photocatalysis in energy conversion and environmental remediation DOI
Junlei Zhang,

Guojia Yu,

Chaoyong Yang

et al.

Current Opinion in Chemical Engineering, Journal Year: 2024, Volume and Issue: 45, P. 101040 - 101040

Published: July 3, 2024

Language: Английский

Citations

43
S-scheme heterojunction photocatalysts: Mechanism, challenges and opportunities DOI

Chenhui Wang,

Yuanyuan Zhao,

Chao Cheng

et al.

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 521, P. 216177 - 216177

Published: Aug. 29, 2024

Language: Английский

Citations

40
Fluorenone‐Based Covalent Triazine Frameworks/Twinned Zn0.5Cd0.5S S‐scheme Heterojunction for Efficient Photocatalytic H2 Evolution DOI

Huiling Ding,

Rongchen Shen,

Kaihui Huang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(28)

Published: March 12, 2024

Abstract Photocatalytic hydrogen evolution reaction (HER) is a very promising and sustainable technology, yet precisely exploring effective HER photocatalysts remains critical challenge due to the rapid charge recombination. In this work, brand‐new S‐scheme heterojunction successfully designed constructed by in situ growth of twinned Zn 0.5 Cd S Solid Solution (CZS) on novel fluorenone‐based covalent triazine framework (FOCTF). The heterojunctions identified via irradiation XPS, electron spin resonance, which can greatly improve photocatalytic rate stability. Under illumination, highest well‐designed CZS‐FOCTF 247.62 mmolg −1 h , 3.83 times as high that pure CZS. Experimental theoretical investigations corroborate new FOCTF has well‐matched staggered band alignment work function difference with as‐fabricated establish favorable internal electric field, accelerates directional migration, thereby enhancing separation utilization efficiency carriers. This finding achieves spatially oriented powerful transport at interfaces inorganic–organic hybrid heterojunctions. It thus desirable furnish an alternative strategy rationally design CZS‐based based organic oxidation semiconductors for diversified reactions.

Language: Английский

Citations

35
Constructing interface chemical coupling S-scheme heterojunction MoO3-x@PPy for enhancing photocatalytic oxidative desulfurization performance: Adjusting LSPR effect via oxygen vacancy engineering DOI

Chenchao Hu,

Jie Yin, Suhang Xun

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 355, P. 124155 - 124155

Published: May 8, 2024

Language: Английский

Citations

26
Surface Functionalization and Defect Construction of SnO2 with Amine Group for Enhanced Visible‐Light‐Driven Photocatalytic CO2 Reduction DOI
Yao Huo, P. Zhang, Junjie Chi

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(14)

Published: Feb. 5, 2024

Abstract Photocatalytic CO 2 reduction to hydrocarbon fuels through solar energy provides a feasible channel for reducing emission and resource depletion. Nevertheless, severe charge recombination high barrier limit the efficiency. Herein, surface amine‐functionalized SnO with oxygen vacancies (A‐Vo‐SnO ) is fabricated achieve visible‐light‐driven photocatalytic reduction. Specifically, amino groups modified onto of catalyst can provide more active sites promote adsorption . Meanwhile, synchronously induced defect level reduces band‐gap expands light‐absorption region from UV light visible light. The modulate electronic structure work as separation centers spatial charges, thus promoting interfacial transfer efficiency providing catalytic sites, evidenced by experimental observation theoretical calculation. As expected, this A‐Vo‐SnO exhibits CH 4 evolution rate 17.27 µmol g −1 h without adding sacrificial agent co‐catalyst, much higher than 5.98 pure This significant inspiration design engineering based on photocatalysts towards conversion.

Language: Английский

Citations

25
Hydrogen Bonds and In situ Photoinduced Metallic Bi0/Ni0 Accelerating Z‐Scheme Charge Transfer of BiOBr@NiFe‐LDH for Highly Efficient Photocatalysis DOI

Rongjun Sun,

Zijian Zhu, Na Tian

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(41)

Published: July 8, 2024

For heterojunction system, the lack of stable interfacial driving force and definite charge transfer channel makes separation efficiency unsatisfactory. The photoreaction mechanism occurring at interface also receives less attention. Herein, a 2D/2D Z-scheme junction BiOBr@NiFe-LDH with large-area contact featured by short hydrogen bonds strong electric field (IEF) is synthesized, in situ photoinduced metallic species assisting demonstrated. between O atoms from BiOBr H NiFe-LDH induce significant redistribution, establishing robust IEF. Notably, during photocatalytic reaction, Bi

Language: Английский

Citations

24