The capture and catalytic conversion of CO into value-added chemicals is a promising and sustainable approach to tackle the global warming and energy crisis. The nitrogen-rich porous organic polymers are excellent materials for CO capture and separation. Herein, we present a nitrogen-rich heptazine-based microporous polymer for the cycloaddition reaction of CO with epoxides in the absence of metals and solvents. HMP-TAPA, being rich in the nitrogen site, showed a high CO uptake of 106.7 mg/g with an IAST selectivity of 30.79 toward CO over N. Furthermore, HMP-TAPA showed high chemical and water stability without loss of any structural integrity. Besides CO sorption, the catalytic activity of HMP-TAPA was checked for the cycloaddition of CO and terminal epoxides, resulting in cyclic carbonate with high conversion (98%). They showed remarkable recyclability up to 5 cycles without loss of activity. Overall, this study represents a rare demonstration of the rational design of POPs (HMP-TAPA) for multiple applications.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8554583 | PMC |
| http://dx.doi.org/10.3389/fchem.2021.737511 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
3D-crumpled graphitic carbon nitride achieving promoted visible-light-driven molecular oxygen activation for phenol degradation.
Chemosphere
April 2023
State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China.
Boosting optical absorption and charge transfer of g-CN is of great importance but a challenging task for developing metal-free high-performance photocatalyst. Herein, 3D-crumpled g-CN (DCN) is synthesized through a direct top-down thermal etching strategy. The thermal exfoliation of layered bulk g-CN (BCN) in air atmosphere induces partial distortion of heptazine-based g-CN nanosheet, which further self-assemble into 3D-crumpled network structure.
View Article and Find Full Text PDFMetal-Free Heptazine-Based Porous Polymeric Network as Highly Efficient Catalyst for CO Capture and Conversion.
Front Chem
October 2021
Advanced Functional Nanomaterials, Energy and Environment Unit, Institute of Nano Science and Technology (INST), Mohali, India.
The capture and catalytic conversion of CO into value-added chemicals is a promising and sustainable approach to tackle the global warming and energy crisis. The nitrogen-rich porous organic polymers are excellent materials for CO capture and separation. Herein, we present a nitrogen-rich heptazine-based microporous polymer for the cycloaddition reaction of CO with epoxides in the absence of metals and solvents.
View Article and Find Full Text PDFToward Quantum Confinement in Graphitic Carbon Nitride-Based Polymeric Monolayers.
J Phys Chem A
September 2021
Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States.
Graphitic carbon nitride (-CN) has garnered much attention due to its potential as an efficient metal-free photocatalyst. This study examines the evolution of properties in zero-dimensional quantum dots up to sizable clusters that mimic extended -CN monolayers. We employ density functional theory to investigate systematically the structural, electronic, and optical properties of the -CN-based melamine and heptazine building blocks using a "bottom-up" construction of polymeric monolayers.
View Article and Find Full Text PDFA Tailored Heptazine-Based Porous Polymeric Network as a Versatile Heterogeneous (Photo)catalyst.
Chemistry
July 2021
Advanced Functional Nanomaterials, Nanotechnology for Energy and Environment, Institute of Nano Science and Technology (INST), Knowledge city, Sector-81, 140306, Manauli, SAS Nagar, Mohali, Punjab, India) .
A heptazine-based microporous polymeric network, HMP-TAPA was synthesised by direct coupling of trichloroheptazine and tris(4-aminophenyl)amine (TAPA). A high surface area of 424 m /g was achieved, which is the highest surface area among heptazine-based polymeric networks (HMPs). The tailored electron-donor and -acceptor units in HMP-TAPA give broad visible-light absorption.
View Article and Find Full Text PDFQuantum dot-sensitized O-linked heptazine polymer photocatalyst for the metal-free visible light hydrogen generation.
RSC Adv
August 2020
Advanced Functional Nanomaterials, Energy and Environment Unit, Institute of Nano Science and Technology (INST) Phase X, SAS Nagar Mohali 160062 Punjab India
Metal-free organic polymer photocatalysts have attracted dramatic attention in the field of visible light-induced hydrogen evolution reaction (HER). Herein, we showed a polymeric O-linked heptazine polymer (OLHP) decorated with S, N co-doped graphene quantum dots (S,N-GQDs) as a photosensitizer to generate hydrogen upon quantum dot sensitization. Both of these heptazine-based systems show effective photosensitization with strong π-π interactions and enhanced photocatalytic H generation (24 times) as metal-free systems.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!