By John DeFore
Green Right Now
File this under Sounds Too Good To Be True: Researchers using nanomaterials at Penn State are experimenting with a device that changes carbon dioxide into methane that can be used as transportation fuel.
Chronicling their experiments in the journal Nano Letters, team leader Craig Grimes describes an array of nanotubes that were coated with catalyst layers of platinum and/or copper, then stuck in a stainless steel chamber with some CO2-loaded water vapor and placed in the sun. After a few hours, the catalyst had turned some of the carbon dioxide into methane.
