Porous organic polymers for light-driven organic transformations

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(7), P. 2444 - 2490

Published: Jan. 1, 2022

As a new generation of porous materials, organic polymers (POPs), have recently emerged as powerful platform heterogeneous photocatalysis. POPs are constructed using extensive synthesis methodologies, with various functional units being connected via high-energy covalent bonds. This review systematically presents the recent advances in for visible-light driven transformations. Herein, we firstly summarize common construction strategies POP-based photocatalysts based on two major approaches: pre-design and post-modification; secondly, categorize methods reaction types constructing POPs. We then classify introduce specific reactions current light-driven POP-mediated Finally, outline state development problems faced transformations by POPs, present some perspectives to motivate reader explore solutions these confront challenges process.

Language: Английский

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Metal-Free Catalysis: A Redox-Active Donor–Acceptor Conjugated Microporous Polymer for Selective Visible-Light-Driven CO₂ Reduction to CH₄

Journal of the American Chemical Society, Journal Year: 2021, Volume and Issue: 143(39), P. 16284 - 16292

Published: Sept. 21, 2021

Achieving more than a two-electron photochemical CO2 reduction process using metal-free system is quite exciting and challenging, as it needs proper channeling of electrons. In the present study, we report rational design synthesis redox-active conjugated microporous polymer (CMP), TPA-PQ, by assimilating an electron donor, tris(4-ethynylphenyl)amine (TPA), with acceptor, phenanthraquinone (PQ). The TPA-PQ shows intramolecular charge-transfer (ICT)-assisted catalytic activity for visible-light-driven photoreduction to CH4 (yield = 32.2 mmol g–1) impressive rate (2.15 h–1 high selectivity (>97%). Mechanistic analysis based on experimental results, in situ DRIFTS, computational studies reveals that potential catalyzing was energetically driven photoactivated ICT upon surface adsorption CO2, wherein adjacent keto groups PQ unit play pivotal role. critical role stimulating photocatalysis further illustrated synthesizing another CMP (TEB-PQ), bearing triethynylbenzene (TEB) PQ, 8-fold lesser toward 4.4 compared TPA-PQ. results demonstrate novel concept efficient, sustainable, recyclable robust organic photocatalyst.

Language: Английский

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Plasmon Ag/Na-doped defective graphite carbon nitride/NiFe layered double hydroxides Z-scheme heterojunctions toward optimized photothermal-photocatalytic-Fenton performance

Applied Catalysis B Environment and Energy, Journal Year: 2021, Volume and Issue: 304, P. 120969 - 120969

Published: Nov. 27, 2021

Language: Английский

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Catalytic enantioselective C(sp3)–H functionalization involving radical intermediates

Nature Communications, Journal Year: 2021, Volume and Issue: 12(1)

Published: Jan. 20, 2021

Abstract Recently, with the boosted development of radical chemistry, enantioselective functionalization C( sp 3 )–H bonds via a pathway has witnessed renaissance. In principle, two distinct catalytic modes, distinguished by steps in which stereochemistry is determined (the formation step or step), can be devised. This Perspective discusses state-of-the-art area involving intermediates as well future challenges and opportunities.

Language: Английский

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Enhanced adsorption and visible-light photocatalytic degradation of toluene by CQDs/UiO-66 MOG with hierarchical pores

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 435, P. 135033 - 135033

Published: Feb. 4, 2022

Language: Английский

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Confining charge-transfer complex in a metal-organic framework for photocatalytic CO2 reduction in water

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: July 26, 2023

In the quest for renewable fuel production, selective conversion of CO2 to CH4 under visible light in water is a leading-edge challenge considering involvement kinetically sluggish multiple elementary steps. Herein, 1-pyrenebutyric acid post-synthetically grafted defect-engineered Zr-based metal organic framework by replacing exchangeable formate. Then, methyl viologen incorporated confined space post-modified MOF achieve donor-acceptor complex, which acts as an antenna harvest light, and regulates electron transfer catalytic center (Zr-oxo cluster) enable visible-light-driven reduction reaction. The proximal presence charge complex enhances kinetics realized from transient absorption spectroscopy, facile helps produce CO2. reported material produces 7.3 mmol g-1 irradiation aqueous medium using sacrificial agents. Mechanistic information gleans paramagnetic resonance, situ diffuse reflectance FT-IR density functional theory calculation.

Language: Английский

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Carbon nitride nanotubes anchored with high-density CuNx sites for efficient degradation of antibiotic contaminants under photo-Fenton process: Performance and mechanism

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 306, P. 121119 - 121119

Published: Jan. 21, 2022

Language: Английский

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Recent advances on energy and environmental application of graphitic carbon nitride (g-C3N4)-based photocatalysts: A review

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(3), P. 110164 - 110164

Published: May 19, 2023

Language: Английский

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Comparative analysis of separation methods used for the elimination of pharmaceuticals and personal care products (PPCPs) from water – A critical review

Separation and Purification Technology, Journal Year: 2022, Volume and Issue: 290, P. 120797 - 120797

Published: March 11, 2022

Language: Английский

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Porous organic polymers with defined morphologies: Synthesis, assembly, and emerging applications

Progress in Polymer Science, Journal Year: 2023, Volume and Issue: 142, P. 101691 - 101691

Published: May 6, 2023

Language: Английский

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