A review on heterogeneous photocatalysis for environmental remediation: From semiconductors to modification strategies

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2022, Volume and Issue: 43(2), P. 178 - 214

Published: Jan. 17, 2022

Language: Английский

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Recent Advances in Plasmonic Photocatalysis Based on TiO₂ and Noble Metal Nanoparticles for Energy Conversion, Environmental Remediation, and Organic Synthesis

Small, Journal Year: 2021, Volume and Issue: 18(1)

Published: Aug. 15, 2021

Abstract Plasmonic photocatalysis has emerged as a prominent and growing field. It enables the efficient use of sunlight an abundant renewable energy source to drive myriad chemical reactions. For instance, plasmonic in materials comprising TiO 2 nanoparticles (NPs) effective charge carrier separation tuning optical response longer wavelength regions (visible near infrared). In fact, ‐based effects are at forefront heterogeneous photocatalysis, having applications conversion, production liquid fuels, wastewater treatment, nitrogen fixation, organic synthesis. This review aims comprehensively summarize fundamentals provide guidelines for future work field above‐mentioned applications. The concepts state‐of‐the‐art description important parameters including formation Schottky junctions, hot electron generation transfer, electromagnetic enhancement, plasmon resonance scattering, photothermal heating have been covered this review. Synthetic approaches effect various physicochemical plasmon‐mediated on performances discussed. is envisioned that may inspire insights into rational development next photocatalysts with target enhanced selectivities.

Language: Английский

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Covalent organic framework-based materials for energy applications

Energy & Environmental Science, Journal Year: 2020, Volume and Issue: 14(2), P. 688 - 728

Published: Nov. 11, 2020

The recent progress in the synthesis and energy applications of covalent organic frameworks has been elaborated this review article.

Language: Английский

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Porous organic polymers for electrocatalysis

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(2), P. 761 - 791

Published: Jan. 1, 2022

Porous organic polymers (POPs) composed of building units linked via covalent bonds are a class lightweight porous network materials with high surface areas, tuneable pores, and designable components structures. Owing to their well-preserved characteristics in terms structure composition, POPs applied as electrocatalysts have shown promising activity achieved considerable advances numerous electrocatalytic reactions, including the hydrogen evolution reaction, oxygen reduction CO2 N2 nitrate/nitrite nitrobenzene oxidation benzyl alcohol reaction. Herein, we present systematic overview recent applications these reactions. The synthesis strategies, specific active sites, catalytic mechanisms summarized this review. fundamental principles some reactions also concluded. We further discuss current challenges perspectives on for applications. Meanwhile, possible future directions highlighted afford guidelines development efficient POP electrocatalysts.

Language: Английский

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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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Advances in porous organic polymers: syntheses, structures, and diverse applications

Materials Advances, Journal Year: 2021, Volume and Issue: 3(2), P. 707 - 733

Published: Nov. 23, 2021

In this review, we discuss the progress in preparation methods and diverse applications for covalent triazine frameworks, hypercrosslinked polymers, organic conjugated microporous polymers.

Language: Английский

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Heterogeneous Photocatalytic Organic Transformation Reactions Using Conjugated Polymers-Based Materials

ACS Catalysis, Journal Year: 2020, Volume and Issue: 10(20), P. 12256 - 12283

Published: Sept. 24, 2020

Photocatalytic heterogeneous organic transformation is considered as an efficient, clean atomic economy, and low-energy consumption strategy for synthesis. Conjugated polymers (CPs)-based materials have recently shown great potential diverse photocatalytic applications because of their unique properties, such structural designability, recyclability, high chemical stability, low cost, they emerged promising alternatives to traditional molecular or inorganic photocatalyst in photoredox reactions. Immense efforts been made toward the construction CPs-based versatile transformations. In this Review, we aim summarize recent progress photocatalysts transformations including oxidation, reduction, coupling, cycloaddition reaction. This Review discusses influence molecular, electronic, channel structure on light absorption, charge separation, mass transfer different The regulated synthesis, mechanistic discussions, future challenges systems are also considered. It expected that could not only deepen comprehension but open up inspirations feasibilities materials.

Language: Английский

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Porphyrin- and phthalocyanine-based porous organic polymers: From synthesis to application

Coordination Chemistry Reviews, Journal Year: 2021, Volume and Issue: 439, P. 213875 - 213875

Published: April 14, 2021

Language: Английский

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The mechanochemical synthesis of polymers

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(7), P. 2873 - 2905

Published: Jan. 1, 2022

Mechanochemistry enables solvent-free syntheses of even novel polymer structures without the need monomer solubility.

Language: Английский

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