Purification of Waste-Generated Biogas Mixtures Using Covalent Organic Framework's High CO Selectivity.

Development of crystalline porous materials for selective CO adsorption and storage is in high demand to boost the carbon capture and storage (CCS) technology. In this regard, we have developed a β-keto enamine-based covalent organic framework () via the Schiff base polycondensation technique. The as-synthesized exhibited excellent thermal and chemical stability along with a very high surface area (1258 m g) and a high CO adsorption capacity (3.

Catching an Oxo Vanadate Porous Acetylacetonate Covalent Adaptive Catalytic Network that Renders Mustard-Gas Simulant Harmless.

In this work, we illustrated the design and development of a metal-coordinated porous organic polymer () namely a post-synthetic metalation strategy to incorporate oxo-vanadium sites in a pristine polymer () having acetylacetonate (acac) as anchoring moiety. The as-synthesized exhibited highly robust and porous framework, which has been utilized for thioanisole (TA) oxidation to its corresponding sulfoxide. The catalyst demonstrated notable stability and recyclability by maintaining its catalytic activity over multiple reaction cycles without any significant loss in activity.

Tweaking Photo CO Reduction by Altering Lewis Acidic Sites in Metalated-Porous Organic Polymer for Adjustable H /CO Ratio in Syngas Production.

Herein, we have specifically designed two metalated porous organic polymers (Zn-POP and Co-POP) for syngas (CO+H ) production from gaseous CO . The variable H /CO ratio of syngas with the highest efficiency was produced in water medium (without an organic hole scavenger and photosensitizer) by utilizing the basic principle of Lewis acid/base chemistry. Also, we observed the formation of entirely different major products during photocatalytic CO reduction and water splitting with the help of the two catalysts, where CO (145.

Tuning of Microenvironment in Covalent Organic Framework via Fluorination Strategy promotes Selective CO Capture.

Herein, we have designed and synthesized two heteroatom (N, O) rich covalent organic frameworks (COF), PD-COF and TF-COF, respectively, to demonstrate their relative effect on CO adsorption capacity and also CO /N selectivity. Compared to the non-fluorinated PD-COF (BET surface area 805 m  g , total pore volume 0.3647 ccg ), a decrease in BET surface area and also pore volume have been observed for fluorinated TF-COF due to the incorporation of fluorine to the porous framework (BET surface area 451 m  g , total pore volume 0.

Nanoarchitectonics of Metal-Free Porous Polyketone as Photocatalytic Assemblies for Artificial Photosynthesis.

The main component of natural gas is methane, whose combustion contributes to global warming. As such, sustainable, energy-efficient, nonfossil-based methane production is needed to satisfy current energy demands and chemical feedstocks. In this article, we have constructed a metal-free porous polyketone () with donor-acceptor (D-A) groups with an extensive π-conjugation by facile Friedel-Crafts acylation reaction between triphenylamine () and pyridine-2,6-dicarbonyl dichloride ().

Presenting porous-organic-polymers as next-generation invigorating materials for nanoreactors.

Porous organic polymers (POPs) represent an emerging class of porous organic materials which mainly comprise organic building blocks that are interconnected via strong covalent bonds, thereby offering highly cross-linked frameworks with rigid structures and specific void spaces for accommodating guest molecules. In the past few years, POPs have garnered colossal research interest as nanoreactors for heterogeneous catalysis (thermal, photochemical, electrochemical, etc.) because of their intriguing characteristic features, such as high thermal and chemical stabilities, adjustable chemical functionalities, large surface areas, and tunable pore size distributions.