Orderly Porous Covalent Organic Frameworks-based Materials: Superior Adsorbents for Pollutants Removal from Aqueous Solutions

The Innovation, Journal Year: 2021, Volume and Issue: 2(1), P. 100076 - 100076

Published: Jan. 10, 2021

Covalent organic frameworks (COFs) are a new type of crystalline porous polymers known for chemical stability, excellent structural regularity, robust framework, and inherent porosity, making them promising materials capturing various types pollutants from aqueous solutions. This review thoroughly presents the recent progress advances COFs COF-based as superior adsorbents efficient removal toxic heavy metal ions, radionuclides, pollutants. Information about interaction mechanisms between summarized macroscopic microscopic standpoints, including batch experiments, theoretical calculations, advanced spectroscopy analysis. The adsorption properties assessed compared with other widely used adsorbents. Several commonly strategies to enhance materials' performance relationship property sorption ability also discussed. Finally, summary perspective on opportunities challenges proposed provide some inspiring information designing fabricating environmental pollution management.

Language: Английский

---

Two-Dimensional Covalent Organic Frameworks with Cobalt(II)-Phthalocyanine Sites for Efficient Electrocatalytic Carbon Dioxide Reduction

Journal of the American Chemical Society, Journal Year: 2021, Volume and Issue: 143(18), P. 7104 - 7113

Published: May 3, 2021

The rapid development in synthesis methodology and applications for covalent organic frameworks (COFs) has been witnessed recent years. However, the of highly stable functional COFs still remains a great challenge. Herein two-dimensional polyimide-linked phthalocyanine (denoted as CoPc-PI-COF-1 CoPc-PI-COF-2) have devised prepared through solvothermal reaction tetraanhydrides 2,3,9,10,16,17,23,24-octacarboxyphthalocyaninato cobalt(II) with 1,4-phenylenediamine 4,4′-biphenyldiamine, respectively. resultant CoPc-PI-COFs four-connected sql net exhibit AA stacking configurations according to powder X-ray diffraction studies, showing permanent porosity, thermal stability above 300 °C, excellent resistance 12 M HCl aqueous solution 20 days. Current–voltage curves reveal conductivity CoPc-PI-COF-2 value 3.7 × 10–3 1.6 S m–1, Due same Co(II) electroactive sites together similar porosity CO2 adsorption capacity CoPc-PI-COFs, cathodes made up carbon black display CO2-to-CO Faradaic efficiency 87–97% at applied potentials between −0.60 −0.90 V (vs RHE) 0.5 KHCO3 solution. comparison CoPc-PI-COF-2&carbon electrode, counterpart provides larger current density (jCO) −21.2 mA cm–2 associated its higher conductivity. This cathode also high turnover number frequency, amounting 277 000 2.2 s–1 −0.70 during 40 h measurement. present result clearly discloses potential 2D porous crystalline solids electrocatalysis.

Language: Английский

---

Covalent organic frameworks for photocatalysis: Synthesis, structural features, fundamentals and performance

Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 475, P. 214889 - 214889

Published: Oct. 15, 2022

Language: Английский

---

Porous organic polymers as a platform for sensing applications

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(6), P. 2031 - 2080

Published: Jan. 1, 2022

Sensing analysis is significantly important for human health and environmental safety. In this review, POPs used as platforms various sensing applications have been summarized discussed.

Language: Английский

---

Porous Organic Cages

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(8), P. 4602 - 4634

Published: April 6, 2023

Porous organic cages (POCs) are a relatively new class of low-density crystalline materials that have emerged as versatile platform for investigating molecular recognition, gas storage and separation, proton conduction, with potential applications in the fields porous liquids, highly permeable membranes, heterogeneous catalysis, microreactors. In common extended structures, such metal–organic frameworks (MOFs), covalent (COFs), polymers (POPs), POCs possess all advantages specific surface areas, porosities, open pore channels, tunable structures. addition, they discrete structures exhibit good to excellent solubilities solvents, enabling their solution dispersibility processability─properties not readily available case well-established, insoluble, frameworks. Here, we present critical review summarizing detail recent progress breakthroughs─especially during past five years─of while taking close look at strategic design, precise synthesis, including both irreversible bond-forming chemistry dynamic chemistry, advanced characterization, diverse applications. We highlight representative POC examples an attempt gain some understanding structure–function relationships. also discuss future challenges opportunities application POCs. anticipate this will be useful researchers working field when it comes designing developing desired functions.

Language: Английский

---

Metalated covalent organic frameworks: from synthetic strategies to diverse applications

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(15), P. 6307 - 6416

Published: Jan. 1, 2022

This review highlights the recent advances of metalated covalent organic frameworks, including synthetic strategies and applications, discusses current challenges future directions.

Language: Английский

---

Bottom-Up Synthesis of 8-Connected Three-Dimensional Covalent Organic Frameworks for Highly Efficient Ethylene/Ethane Separation

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(12), P. 5643 - 5652

Published: March 21, 2022

Developing cost-/energy-efficient separation techniques for purifying ethylene from an ethylene/ethane mixture is highly important but very challenging in the industrial process. Herein, using a bottom-up [8 + 2] construction approach, we rationally designed and synthesized three three-dimensional covalent organic frameworks (COFs) with 8-connected bcu networks, which can selectively remove ethane high efficiency. These COF materials, are fabricated by condensation reaction of customer-designed octatopic aldehyde monomer linear diamino linkers, possess crystallinity, good structural robustness, porosity. Attributed to well-organized micro-sized pores nonpolar/inert pore environment, these COFs display adsorption capacity selectivity over ethylene, making them among best ethane-selective adsorbents purification. Their excellent performance validated dynamic breakthrough experiments high-purity (>99.99%) produced through single The surpasses all reported C2H6-selective even some benchmark metal-organic frameworks. This work provides guidance design new value-added gas

Language: Английский

---

Covalent Organic Framework Based Functional Materials: Important Catalysts for Efficient CO₂Utilization

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(15)

Published: Jan. 21, 2022

As hot topics in the chemical conversion of CO2 , photo-/electrocatalytic reduction and use as a supporter for energy storage have shown great potential utilization . However, many obstacles still exist on road to realizing highly efficient conversion, such inefficient uptake/activation mass transport catalysts. Covalent organic frameworks (COFs), kind porous material, been widely explored catalysts owing their unique features. In particular, COF-based functional materials containing diverse active sites (such single metal sites, nanoparticles, oxides) offer storage. This Minireview discusses recent breakthroughs basic knowledge, mechanisms, pathways strategies that addition, challenges prospects are also introduced.

Language: Английский

---

Macrocycle‐Based Porous Organic Polymers for Separation, Sensing, and Catalysis

Advanced Materials, Journal Year: 2021, Volume and Issue: 34(6)

Published: Oct. 22, 2021

Abstract With the rapid development of materials science, porous organic polymers (POPs) have received remarkable attentions because their unique properties such as exceptionally high surface area and flexible molecular design. The ability to incorporate specific functions in a precise manner makes POPs promising platforms for myriad applications adsorption, separation, catalysis. Therefore, many different types been rationally designed synthesized expand scope advanced materials, endowing them with distinct structures properties. Recently, supramolecular macrocycles excellent host–guest complexation abilities are emerging powerful crosslinkers developing novel hierarchical improved performance, which can be well‐organized at spatial scales. Macrocycle‐based could unusual porous, adsorptive, optical when compared nonmacrocycle‐incorporated counterparts. This cooperation provides valuable insights molecular‐level understanding skeletal complexity diversity. Here, research advances macrocycle‐based aptly summarized by showing syntheses, properties, terms sensing, Finally, current challenging issues this exciting field delineated comprehensive outlook is offered future directions.

Language: Английский

---

Emerging porous organic polymers for biomedical applications

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(4), P. 1377 - 1414

Published: Jan. 1, 2022

This review summarizes and discusses the recent progress in porous organic polymers for diverse biomedical applications such as drug delivery, biomacromolecule immobilization, phototherapy, biosensing, bioimaging, antibacterial applications.

Language: Английский

---