Cheap, clean hydrogen is the holy grail in the green-technology world, and Nanoptek says it could have part of the answer.
The Maynard, Mass.-based company, which Wednesday announced that it has raised $4.7 million, has come up with a low-cost, durable titania electrode that can split water molecules into hydrogen and oxygen.
Sunlight hits the electrode, and the electrode splits the light into a positive charge (called a hole) and an electron. Before the two charges can rejoin, the electron gets captured by the electrode and then is exploited to split water. Silicon solar cells operate on the … Read more