Sunday, March 31, 2024

Engineers find a new way to convert carbon dioxide into useful products

There are so many ways CO2 could be removed at any time at large scale and even recycled!

So why are we indoctrinated with all this Climate Change demagoguery, panic and alarmism?
Fear suppresses the exercise of individual liberty!
A manufactured, phony crisis or emergency empowers government and authoritarians!
The Global Warming hoax and the Climate Change religion is the greatest scam of our time!

"MIT chemical engineers have devised an efficient way to convert carbon dioxide to carbon monoxide, a chemical precursor that can be used to generate useful compounds such as ethanol and other fuels. ..."

From the abstract:
"Electrochemical reduction of carbon dioxide (CO2) is a promising route to up-convert this industrial byproduct. However, to perform this reaction with a small-molecule catalyst, the catalyst must be proximal to an electrode surface. Efforts to immobilize molecular catalysts on electrodes have been stymied by the need to optimize the immobilization chemistries on a case-by-case basis. Taking inspiration from nature, we applied DNA as a molecular-scale “Velcro” to investigate the tethering of three porphyrin-based catalysts to electrodes. This tethering strategy improved both the stability of the catalysts and their Faradaic efficiencies (FEs). DNA-catalyst conjugates were immobilized on screen-printed carbon and carbon paper electrodes via DNA hybridization with nearly 100% efficiency. Following immobilization, a higher catalyst stability at relevant potentials is observed. Additionally, lower overpotentials are required for the generation of carbon monoxide (CO). Finally, high FE for CO generation was observed with the DNA-immobilized catalysts as compared to the unmodified small-molecule systems, as high as 79.1% FE for CO at −0.95 V vs SHE using a DNA-tethered catalyst. This work demonstrates the potential of DNA “Velcro” as a powerful strategy for catalyst immobilization. Here, we demonstrated improved catalytic characteristics of molecular catalysts for CO2 valorization, but this strategy is anticipated to be generalizable to any reaction that proceeds in aqueous solutions."

Engineers find a new way to convert carbon dioxide into useful products | MIT News | Massachusetts Institute of Technology A catalyst tethered by DNA boosts the efficiency of the electrochemical conversion of CO2 to CO, a building block for many chemical compounds.


Graphical abstract



No comments: