Scientists have created a guanidinium sulfate salt that can capture and store carbon dioxide at ambient pressures and temperatures with little energy input. The strategy could change the way the industry captures, transports and stores gas. An international team of scientists filled the aqueous solution of Gua₂ Sat₄ with carbon dioxide and saw how a monocrystalline clathrate salt based on guanidinium sulfate forms under ambient conditions. Because the solution trapped the carbon dioxide without forming strong bonds with the gas, the researchers were able to simply reverse the process to release the gas again. Cafer Yavuz, a researcher at King Abdullah University of Science and Technology in Saudi Arabia and one of the authors of the study, says that releasing trapped carbon dioxide has never been easier. “All you have to do is take this [resulting precipitate], drop it in water, the water dissolves the salt and CO_{2 ,}"he explains" It's almost like the tablets we use to drink vitamin C. You put it in water and bubbles [appear]. CO is coming_{2. "} After releasing the carbon dioxide, the team found that the resulting solution of Gua₂ Sat₄ it is immediately ready for the next cycle of carbon dioxide absorption. (Bárbara Pinho, Royal Society of Chemistry)

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