Well, when we first heard about this breakthrough from MIT, it was March. Now after several months, yesterday’s Science edition has described the technology of this device, that’s known as Artificial Leaf. This leaf will produce pure Oxygen and Hydrogen and will be powered by sunlight just like any other leaf.
I’ve used the word “device”above, but its not just a device. Its much more than that. This leaf also doesn’t has a set shape or size.According to Science,
There are no moving parts and no set shape or size of this leaf. The leaf is just a semiconducting silicon, coated on one side with a special cobalt catalyst, and on the other with a nickel-molybdenum-zinc alloy. Sunlight creates a current within the silicon, and the catalyst causes water molecules to split into gaseous H2 and O2 which rise off in bubbles from opposite sides of the leaf.
The gases can be stored in a fuel cell, which can provide power later and produce pure water as its exhaust. Nocera and many other researchers formed a company, named as Sun Catalytix, to independently research, apply, and market Artificial Leaf. The company last year raised $9.5 million from Tata and some other investors.
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