Sunday, May 28, 2023

A new solar-powered artificial leave that converts carbon dioxide and water into liquid fuels

Global Warming is a hoax and Climate Change a religion! 

E.g. humans have already developed plenty of technologies to remove the life essential trace gas CO2 from the atmosphere at any scale. Here is another, very recent example!

"The researchers ... harnessed the power of photosynthesis to convert CO2, water and sunlight into multicarbon fuels – ethanol and propanol – in a single step. These fuels have a high energy density and can be easily stored or transported.
Unlike fossil fuels, these solar fuels produce net-zero carbon emissions and are completely renewable, and unlike most bioethanol, they do not divert any agricultural land away from food production. ...
Now, the artificial leaf can directly produce clean ethanol and propanol without the need for the intermediary step of producing syngas. ..."

Let's remember: "The United States is the world’s largest bioethanol producer: according to the U.S. Department of Agriculture, almost 45% of all corn grown in the US is used for ethanol production [what an  irresponsible waste since about 2005!!! Brazil is the second largest producer].
“Biofuels like ethanol are a controversial technology, not least because they take up agricultural land that could be used to grow food instead,” ..."

From the abstract:
"The synthesis of high-energy-density liquid fuels from CO2 and H2O powered by sunlight has the potential to create a circular economy. Despite the progress in producing simple gaseous products, the construction of unassisted photoelectrochemical devices for liquid multi-carbon production remains a major challenge. Here we assembled artificial leaf devices by integrating an oxide-derived Cu94Pd6 electrocatalyst with perovskite–BiVO4 tandem light absorbers that couple CO2 reduction with water oxidation. The wired Cu94Pd6|perovskite–BiVO4 tandem device provides a Faradaic efficiency of ~7.5% for multi-carbon alcohols (~1:1 ethanol and n-propanol), whereas the wireless standalone device produces ~1 µmol cm−2 alcohols after 20 h unassisted operation under air mass 1.5 G irradiation with a rate of ~40 µmol h−1 gCu94Pd6−1. This study demonstrates the direct production of multi-carbon liquid fuels from CO2 over an artificial leaf and, therefore, brings us a step closer to using sunlight to generate value-added complex products."

Driving on sunshine: clean, usable liquid fuels made from solar power | University of Cambridge Researchers have developed a solar-powered technology that converts carbon dioxide and water into liquid fuels that can be added directly to a car’s engine as drop-in fuel.

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