The planet's attentions have converged to alternatives sustainable, especially when it comes to renewable energy. One of the ideas for the segment is the production of green hydrogen from nanomaterials performance.
Green hydrogen is an important source of clean energy. In addition to its production not depending on fossil fuels - it uses only hydroelectric, wind or solar energy - it can supply energy to several sectors, such as construction and transport, for example.
Researchers from the Institut National de la Recherche Scientifique (INRS) together with experts from the Institute of Chemistry and Processes for Energy, Environment and Health (ICPEES) have just published a study on the topic. The publication chosen was the magazine Solar Energy Materials and Solar Cells.
To optimize the green hydrogen production process using hydroelectric energy, the researchers incorporated nanostructured electrodes photosensitive to sunlight. “Thanks to high-performance nanomaterials, we can improve the efficiency of decoupling the water to produce hydrogen, ”says My Ali El Khakan, professor at INRS.
Green hydrogen can be obtained through electrolysis, which occurs in the generation of hydroelectric energy. The problem is that industrial electrolysers are very expensive and consume a lot of energy. The scientists then chose to use nanostructured electrodes to divide water molecules from sunlight - a process known as photocatalysis.
For this, they selected titanium dioxide as the base material, since the compound is known to be a light-sensitive semiconductor ultraviolet. The researchers changed the atomic composition of the ingredient to increase photosensitivity to light to 50%. Then, nanostructured the electrodes as hives, which multiplies the useful area of the material by 100 thousand times (or more).
The researchers also added cobalt oxide to the structure. This helped to increase photocatalytic efficiency tenfold compared to nanotubes without the component. Finally, the scientists distributed the catalyst nanoparticles in the titanium dioxide nanotubes and were able to increase their hydrogen production capacities using laser ablation deposition techniques.
The discovery was celebrated by the researchers as a major step towards a future free of carbon. I hope they are right!
Street: Tech Times