Researchers from Monash University in Melbourne and the Commonwealth Scientific and Industrial Research Organization said a photosensitive metal organic framework -- or MOF, a class of materials known for their exceptional capacity to store gases -- could be a powerful and inexpensive new tool to capture and store, or potentially recycle, carbon dioxide.
Sunlight would release the stored carbon, researchers said, overcoming problems with current, energy-intensive methods of carbon capture where liquid capture materials have to be heated in a prolonged process to release the carbon dioxide for storage.
"The MOF can release the adsorbed carbon dioxide when irradiated with light found in sunlight, just like wringing out a sponge," Monash doctoral student Richelle Lyndon said.
The technology, known as dynamic photo-switching, was accomplished using light-sensitive azobenzene molecules, she said.
"The MOF we discovered had a particular affinity for carbon dioxide. However, the light responsive molecules could potentially be combined with other MOFs, making the capture and release technology appropriate for other gases," she said.
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