Covalent organic framework photocatalysts: structures and applications

Wang, Han; Wang, Hui; Wang, Ziwei; Tang, Lin; Xu, Piao; Chen, Ming; Xiong, Tao; Zhou, Chengyun; Li, Xiyi; Huang, Danlian; Zhu, Yuan; Wang, Zixuan; Tang, Junwang

doi:10.1039/d0cs00278j

Cited by 693 publications

(407 citation statements)

References 269 publications

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“…[53] Thew ell-defined pores, excellent stability and fine-tuned physicochemical properties of COFs make them appealing candidates as PSs and catalysts for fuel production. [54] Ad ibenzo [b,d]thiophene sulfone moiety can be integrated into aC OF (33,F igure 16), which leads to ah igh photocatalytic performance of 10 mmol H 2 h À1 g À1 when used in presence of Pt and AA as SED. [43c] TheCOF allows broad visible light absorption (E g = Figure 13.…”

Section: Minireviewsmentioning

confidence: 99%

Synthetic Organic Design for Solar Fuel Systems

Warnan

Reisner

2020

Angew Chem Int Ed

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From the understanding of biological processes and metalloenzymes to the development of inorganic catalysts, electro‐ and photocatalytic systems for fuel generation have evolved considerably during the last decades. Recently, organic and hybrid organic systems have emerged to challenge the classical inorganic structures through their enormous chemical diversity and modularity that led earlier to their success in organic (opto)electronics. This Minireview describes recent advances in the design of synthetic organic architectures and promising strategies toward (solar) fuel synthesis, highlighting progress on materials from organic ligands and chromophores to conjugated polymers and covalent organic frameworks.

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Section: Minireviewsmentioning

confidence: 99%

Synthetic Organic Design for Solar Fuel Systems

Warnan

Reisner

2020

Angew Chem Int Ed

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“…Additionally, we wish to take this chance to discuss the current status of using covalent organic frameworks (COFs) [27][28][29] -the newly emerged porous and crystalline frameworks whose structures are solely made up of the organic building blocksfor the photoreduction of CO 2 although their catalytic uses in this purpose are at the early stage of development and have not been considerably employed yet. [30,31] This work describes the foundational knowledge of the photocatalytic CO 2 reduction, including the background, general mechanism and pathways, methods of characterization supporting the reaction mechanism. We aim to shape and consolidate the fundamental of the photoreduction, which is the preliminary interpretability for the second part, applications of reticular materials for the photoreduction of CO 2 , to supportably introduce the photocatalytic chemistry to emerging scholars.…”

Section: Introductionmentioning

confidence: 99%

Reticular Materials for Artificial Photoreduction of CO₂

Nguyen

2020

Advanced Energy Materials

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fatally affects the natural greenhouse. Therefore, seeking solutions that ameliorate fossil fuel dependency and CO 2 emission undoubtedly is of urgency. [4] The carbon cycle including selective CO 2 capture, [5] sequestration, [6] and conversion [7] has been used for years to deal with the issues mentioned above. Unlike the capture and sequestration, which have been successfully explored using a variety of porous materials, [8] CO 2 conversion, in which CO 2 is used as C1 starting material for the chemical transformation into other useful feedstocks, is in the early stage of development because there is a lack of effective catalysts and/or optimized conversion processes; therefore, the CO 2 reduction becomes one of the most important but challenging tasks. [9] To cope with this crucial challenge, it is necessary to briefly review the natural photosynthesis, [10] which plants, algae, and/or bacteria capture sunlight and use its photon energy to reduce CO 2 into oxygen (Scheme 1). Notably, in the oxygenic photosynthesis conducted by plants, O 2 and water molecules (six molecules of each) are formed as equivalent as CO 2 input (six molecules). This photosynthesis process not only reintroduces the breathable oxygen but also inspires researchers in imitating the natural photoreduction of CO 2 into clean-burning fuels. The reduction of CO 2 using catalysts activated by sunlight, the universal photon energy from Nature, termed photocatalysis is of great importance for renewable energy. In 1972, Fujishima and Honda discovered the application of TiO 2 as a semiconductor for water hydrolysis under ultraviolet irradiation. [11] This work has influentially underpinned scientists to artificially synthesize many kinds of photocatalytic materials for the transformation of CO 2 under ultraviolet or visible light irradiation, of which the latter is more applicable and important due to its environmental friendly attributes. [12-14] To date, semiconductors commonly used for photocatalysis are TiO 2 , metal alloys, nanowires, quantum dots, graphenebased composites, and to name but a few. [15-17] Among them, porous crystalline materials have been proven to be promising candidates for the CO 2 photoreduction into high value-added chemicals because of their large internal surface area and densely catalytically active sites. [18,19] Particularly, reticular chemistry of metal-organic frameworks (MOFs) possessing endless possibilities to precisely control crystal structures

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“…[5,6] COFs have also been found to be effective catalysts and numerous catalytic, photocatalytic and electrocatalytic applications have been reported. [7,8,9] A notable example of COF catalysis employs an imine-based COF to achieve CO2 fixation using a process that avoids the typical shortcomings (e.g. metal toxicity and product contamination).…”

Section: Introductionmentioning

confidence: 99%

Characterizing the Turbostratic Disorder in COF-5 with NMR Crystallography

Pope¹,

Vazquez²,

Uribe‐Romo³

et al. 2020

Preprint

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Since its initial synthesis in 2005, COF-5 has been known to have intrinsic disorder in the placement of the 2D layers relative to one another (i.e. turbostratic disorder). Prior studies of have demonstrated that the eclipsed layering found in the space group originally assigned to COF-5 (P6/mmm) is inconsistent with energy considerations. Herein it is demonstrated that eclipsed layers are also inconsistent with 13C solid-state NMR data. Crystal structure predictions are made in five alternative space groups and good agreement is obtained in P21/m, Cmcm, and C2/m. We posit that all three space groups are present within the stacked 2D layers and show that this conclusion is consistent with evidence from 13C solid-state NMR linewidths and chemical shifts, powder x-ray diffraction data and energy considerations. An alternative explanation involving a mixture of multiple pure phases is rejected because the observed NMR spectra don’t exhibit the characteristic features of such mixed phase materials.

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Covalent organic framework photocatalysts: structures and applications

Abstract: This review summarises the recent advances of covalent organic framework photocatalysts including structures and applications.

Cited by 693 publications

References 269 publications

Synthetic Organic Design for Solar Fuel Systems

Synthetic Organic Design for Solar Fuel Systems

Reticular Materials for Artificial Photoreduction of CO₂

Characterizing the Turbostratic Disorder in COF-5 with NMR Crystallography

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Covalent organic framework photocatalysts: structures and applications

Abstract: This review summarises the recent advances of covalent organic framework photocatalysts including structures and applications.

Cited by 693 publications

References 269 publications

Synthetic Organic Design for Solar Fuel Systems

Synthetic Organic Design for Solar Fuel Systems

Reticular Materials for Artificial Photoreduction of CO2

Characterizing the Turbostratic Disorder in COF-5 with NMR Crystallography

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Product

Resources

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Reticular Materials for Artificial Photoreduction of CO₂