GOFSGlobal Ocean Flux Study
GOFSGeneral Organisation for Sugar
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GOF is a well-known technology used for various telecommunication systems such as submarine cables or fiber-to-home high-speed Internet lines [12].
"No one else has ever made GOFs, to the best of our knowledge," said NIST theorist Taner Yildirim.
"What we have found so far, though, indicates GOFs can hold at least a hundred times more hydrogen molecules than ordinary graphene oxide does.
"The GOFs can retain 1 percent of their weight in hydrogen at a temperature of 77 degrees Kelvin and ordinary atmospheric pressure-roughly comparable to the 1.2 percent that some well-studied metal-organic frameworks can hold," Yildirim said.
Another of the team's potentially useful discoveries is the unusual relationship that GOFs exhibit between temperature and hydrogen absorption.
However, the team discovered that GOFs behave quite differently.
Moreover, it does not release any hydrogen below this "blocking temperature" - suggesting that, with further research, GOFs might be used both to store hydrogen and to release it when it is needed, a fundamental requirement in fuel cell applications.
According to the team, GOFs will likely perform even better once the team explores their parameters in more detail.
But if oxidized graphene sheets are stacked atop one another like the decks of a multilevel parking lot, connected by molecules that both link the layers to one another and maintain space between them, the resulting graphene-oxide framework (GOF) can accumulate hydrogen in greater quantities.