Silver Nanoparticle-Embedded Iron-Mediated Gel Matrix: Active Catalyst for CO2 Fixation and A3 Coupling DOI
Sumit Mondal, Rajesh Patra, J.D. Ray

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 26, 2024

Utilizing carbon dioxide (CO2) as a primary C1 source and transforming it into valuable compounds offer viable approach to tackle energy environmental concerns. The incorporation of metal nanoparticles template frameworks create catalytic hybrid materials provides an ideal promising for integrated CO2 capture conversion. Anchoring highly dispersed silver (AgNPs) on functional coordination polymer gels (CPGs) efficient heterogeneous catalysts the carboxylative cyclization propargyl alcohols with is fascinating but challenging prospect. Herein, straightforward in situ reduction method demonstrated anchor well-dispersed AgNPs triazine-based CPG (Fe_MG) scaffolds. A nitrogen-rich triazine moiety actively helps nucleation growth Ag within network. Catalytic studies showed that presence Ag@Fe_MG allowed excellent conversion (∼99%) 2-methylbut-3-yn-2-ol corresponding alkylene cyclic carbonate 24 h at room temperature. as-synthesized catalyst not only aids chemical fixation also facilitates three-component coupling reaction uses aldehyde, terminal alkyne, secondary amine produce amines. impressive group tolerance different substrate scopes reusability, well maintaining its activity without any significant decrease during cycles, dictate efficiency catalyst. Therefore, our study demonstrates judicious selection templates fabricate composites nanoparticles, which serve multicomponent reactions.

Language: Английский

Porphyrin‐Based Covalent Organic Frameworks for CO2 Photo/Electro‐Reduction DOI Open Access

Sun Tingting,

Zhi Wang, Yuhui Wang

et al.

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 9, 2025

Photo/electro-catalytic CO2 reduction into high-value products are promising strategies for addressing both environmental problems and energy crisis. Duo to their advantageous visible light absorption ability, adjustable optic/electronic properties, definite active center, post-modification capability, excellent stability, porphyrin-based covalent organic frameworks (COFs) have emerged as attractive photo/electro-catalysts towards reduction. In this review, the research progress of COFs photo/electro-catalytic is summarized including design principles, catalytic performance, reaction mechanism. addition, review also presents some challenges prospects application in reduction, laying base fundamental efforts.

Language: Английский

Citations

2
Modulating PCET Process via Optimizing Local Microenvironment of CdS@NiV-LDH Heterojunction for CO2 Reduction to Tunable Green Syngas Photosynthesis DOI Creative Commons
Senlin Zhang,

Yuheng Ma,

Changqiang Yu

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A novel CdS@NiV-LDH heterojunction with an optimized electric field microenvironment and reaction has been constructed for the photocatalytic reduction of CO 2 to tunable green syngas by rationally modulating PCET process.

Language: Английский

Citations

1
A triazole-based covalent organic framework as a photocatalyst toward visible-light-driven CO2 reduction to CH4 DOI Creative Commons
Sandip Biswas, Faruk Ahamed Rahimi,

R. Kamal Saravanan

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(39), P. 16259 - 16270

Published: Jan. 1, 2024

Rational design of a TFPB-TRZ COF bearing the small and heteroatom-rich organic node TRZ (triazole moiety) which facilitates stabilization CO intermediate at imine (–CN–) site via electron donation from an N-hetero species.

Language: Английский

Citations

5
Photocatalytic CO2 Reduction to Solar Fuels by a Chemically Stable Bimetallic Porphyrin-Based Framework DOI
Rohan Jena, Faruk Ahamed Rahimi,

Tamagna Mandal

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 12, 2024

Porphyrin-based photocatalysts have emerged as promising candidates for facilitating carbon dioxide (CO

Language: Английский

Citations

4
Tailoring d‑Band Center of Single‐Atom Nickel Sites for Boosted Photocatalytic Reduction of Diluted CO2 from Flue Gas DOI
Jiahui Liu, Bin Han, Xueming Liu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 10, 2024

Photocatalytic reduction of diluted CO

Language: Английский

Citations

4
Encapsulating perovskite quantum dots into 3D COF for visible light-driven CO2 reduction DOI

Xinxin Wang,

Yucheng Jin, Xiya Yang

et al.

Science China Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Language: Английский

Citations

0
Dimensionally Confined Growth in Nanometer‐Sized Hierarchical Heterostructures: Nanoscale Visualization of Enhanced Magnetic and Electric Interactions DOI Open Access
Yihao Liu, Xiaodi Zhou, Guanyu Chen

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract Quantum size effects and interfacial dimensional interactions enable nanometer‐scale hierarchical heterostructures to adjust band structures by energy level discretization, impurity formation, inversion, allowing for controlled carrier localization directional relaxation. These unique characteristics show great potential applications in ferroelectrics, optoelectronics, capacitors, sensors. Yet, optimizing performance fine‐tuning the properties of nanoscale systems, especially composition, remains a considerable challenge. Here dimensionally confined synthesis is reported through pyrolysis‐based metal‐organic framework‐on‐metal‐organic framework (MOF‐on‐MOF) strategy, resulting continuous metal‐carbon carbon‐oxide interfaces below 50 nm. Off‐axis electron holography theoretical calculations are utilized visualize dynamic conversion between localized free electrons, as well relaxation processes high‐density magnetic coupling at nanoscale. phenomena rarely observed micron‐scale or non‐hierarchical heterostructures. improvements lead significantly enhanced dielectric properties, efficient interaction with high‐frequency electromagnetic (EM) fields, indicated loss bandwidth covering full C‐band. Future work will explore constructing these targeted materials examine new such topological behavior, ferrimagnetism, giant magnetoresistance, sustainability optoelectronic technology.

Language: Английский

Citations

0
Stable Na+ Ion Storage via Dual Active Sites Utilization in Covalent Organic Framework‐Carbon Nanotube Composite DOI Open Access
Anupam Dey, Atin Pramanik, S. P. Purohit

et al.

ChemSusChem, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

Abstract Redox‐active covalent organic frameworks (COFs) with metal binding sites are increasingly recognized for developing cost‐effective, eco‐friendly electrodes in rechargeable energy storage devices. Here, we report a microwave‐assisted synthesis and characterization of triazine‐based polyimide COF that features dual redox‐active (−C=O from pyromellitic −C=N− triazine) COF@CNT nanocomposites ( COF@CNT‐X , where X=10, 30, 50 wt % NH 2 ‐MWCNT) formed through linking amino‐functionalized multiwalled carbon nanotubes. These composites evaluated as cathode materials the sodium‐ion batteries (SIBs). The amine functionalization renders bond between CNT, improving electronic conductivity, structural rigidity, long‐term stability. interfacial growth layers on CNTs increases accessible sites, enhancing sodium diffusion kinetics during sodiation/desodiation. COF@CNT‐50 composite exhibits outstanding Na + ion performance (reversible capacity 164.3 mAh g −1 at 25 mA ) excellent stability over 1000 cycles ambient temperature. At elevated temperature (65 °C), it also maintains good cycle Ex situ XPS analysis confirms importance active mechanism. Density functional theory (DFT) calculations reveal insights into corresponding energies structure, elucidating experimental voltage profile.

Language: Английский

Citations

0
Selective heterogeneous photocatalytic activation for toluene oxidation: recent advances, challenges and perspective DOI Open Access
Shiqin Gao, Li Bai, Tao Gan

et al.

Chemical Synthesis, Journal Year: 2025, Volume and Issue: 5(1)

Published: Feb. 8, 2025

The conversion of toluene into high-value products without generating undesired CO2 remains a critical challenge. Selective oxidation under visible light irradiation has emerged as promising solution. This review offers comprehensive interpretation photocatalytic transformations in heterogeneous oxidation. We start by outlining the basic mechanism C–H bond activation and provide an overview reactive oxygen species (ROS) within systems. Subsequently, we summary strategies that have been developed to enhance selectivity system. Following this, advanced characterization techniques density functional theory (DFT) calculations are discussed for understanding structure-performance relationship photocatalysts mechanisms underlying processes. Finally, put forward detailed discussion current challenges potential directions future research, with aim offering valuable insights this emerging field. believe will not only spark greater creativity optimizing but also offer designing other

Language: Английский

Citations

0
Porphyrin‐Based Covalent Organic Frameworks for CO2 Photo/Electro‐Reduction DOI Open Access

Sun Tingting,

Zhi Wang, Yuhui Wang

et al.

Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 9, 2025

Abstract Photo/electro‐catalytic CO 2 reduction into high‐value products are promising strategies for addressing both environmental problems and energy crisis. Duo to their advantageous visible light absorption ability, adjustable optic/electronic properties, definite active center, post‐modification capability, excellent stability, porphyrin‐based covalent organic frameworks (COFs) have emerged as attractive photo/electro‐catalysts towards reduction. In this review, the research progress of COFs photo/electro‐catalytic is summarized including design principles, catalytic performance, reaction mechanism. addition, review also presents some challenges prospects application in reduction, laying base fundamental efforts.

Language: Английский

Citations

0