
A molecular system that holds great promise for the capture and storage of carbon dioxide has been modified so that it now also holds great promise as a catalyst for converting captured carbon dioxide into valuable chemical products.
The sponge-like quality of a COF’s vast internal surface area enables the system to absorb and store enormous quantities of targeted molecules, such as carbon dioxide.
Researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) have incorporated molecules of carbon dioxide reduction catalysts into the sponge-like crystals of covalent organic frameworks (COFs). This creates a molecular system that not only absorbs carbon dioxide, but also selectively reduces it to carbon monoxide, which serves as a primary building block for a wide range of chemical products including fuels, pharmaceuticals and plastics.
“There have been many attempts to develop homogeneous or heterogeneous catalysts for carbon dioxide, but the beauty of using COFs is that we can mix-and-match the best of both worlds, meaning we have molecular control by choice of catalysts plus the robust crystalline nature of the COF,” says Christopher Chang, a chemist with Berkeley Lab’s Chemical Sciences Division, and a co-leader of this study. “To date, such porous materials have mainly been used for carbon capture and separation, but in showing they can also be used for carbon dioxide catalysis, our results open up a huge range of potential applications in catalysis and energy.”
Chang and Omar Yaghi, a chemist with Berkeley Lab’s Materials Sciences Division who invented COFs, are the corresponding authors of a paper in Science that describes this research in detail. The paper is titled “Covalent organic frameworks comprising cobalt porphyrins for catalytic CO2 reduction in water.” Lead authors are Song Lin, Christian Diercks and Yue-Biao Zhang. Other co-authors are Nikolay Kornienko, Eva Nichols, Yingbo Zhao, Aubrey Paris, Dohyung Kim and Peidong Yang.
Chang and Yaghi both hold appointments with the University of California (UC) Berkeley. Chang is also a Howard Hughes Medical Institute (HHMI) investigator. Yaghi is co-director of the Kavli Energy NanoScience Institute (Kavli-ENSI) at UC Berkeley.
The notoriety of carbon dioxide for its impact on the atmosphere and global climate change has overshadowed its value as an abundant, renewable, nontoxic and nonflammable source of carbon for the manufacturing of widely used chemical products. With the reduction of atmospheric carbon dioxide emissions in mind, Yaghi and his research group at the University of Michigan in 2005 designed and developed the first COFs as a means of separating carbon dioxide from flue gases. A COF is a porous three-dimensional crystal consisting of a tightly folded, compact framework that features an extraordinarily large internal surface area – a COF the size of a sugar cube were it to be opened and unfolded would blanket a football field.
The sponge-like quality of a COF’s vast internal surface area enables the system to absorb and store enormous quantities of targeted molecules, such as carbon dioxide.
Read more: Soaking Up Carbon Dioxide and Turning it into Valuable Products
The Latest on: Covalent organic frameworks
[google_news title=”” keyword=”covalent organic frameworks” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
via Google News
The Latest on: Covalent organic frameworks
- Solid state battery breakthrough from pan-Asian teamon July 19, 2024 at 4:03 am
Researchers at the Hong Kong University of Science and Technology (HKUST) have contributed to what they claim is a significant advance in solid state battery technology.
- Engineers develop advanced solid-state electrolytes for high-performance all-solid-state lithium metal batterieson July 18, 2024 at 12:18 pm
Researchers at the School of Engineering of the Hong Kong University of Science and Technology (HKUST) have recently developed a new generation of solid-state electrolytes (SSEs) for lithium-metal ...
- Call for Papers: Northwest Regional Meeting (NORM)on June 27, 2024 at 5:00 pm
metal-organic frameworks, covalent organic frameworks, polyaromatic frameworks (crystalline and amorphous), and porous cage molecular crystals. Understanding the mechanisms of health and disease are ...
- Tiny and tunable: Porous crystals excel at recognizing moleculeson June 27, 2024 at 5:00 pm
Because of this ability, COFs – covalent organic frameworks – could greatly reduce energy consumption and operational costs associated with industrial gas separation. They could also make more ...
- Researchers find flexible solution for separating gaseson June 26, 2024 at 5:01 pm
The bulk of it is solid organic material with these regular-sized pores that line up and form channels." The researchers used a fairly new type of dynamic covalent chemistry that focuses on the ...
- Researchers film energy materials as they formon June 18, 2024 at 10:05 am
But the effort is worth it—particularly when the product of the reaction is a promising energy material: so-called covalent organic frameworks (COFs). Still quite young, this material class has ...
- New 2D polymer brings scientists a step closer to realizing switchable quantum stateson June 17, 2024 at 9:45 am
More information: Florian Auras et al, Dynamic two-dimensional covalent organic frameworks, Nature Chemistry (2024). DOI: 10.1038/s41557-024-01527-8 Provided by Dresden University of Technology ...
- Ashlee J. Howarth, PhDon May 25, 2023 at 1:03 am
covalent–organic frameworks (COFs), and metal–organic frameworks (MOFs). Recent literature will be used to highlight potential applications and key advances relevant to each class of porous materials.
- 2020-2021 Scholarship Recipientson October 30, 2021 at 8:55 am
Under the direction of Christopher Bejger, they researched the synthesis and characterization of iron-sulfide covalent organic frameworks. Afrah is majoring in Chemistry at the University of North ...
via Bing News