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Sounds vaguely like a perpetual motion kind of thing.
https://www.msn.com/en-us/news/technology/scientists-make-breakthrough-turning-air-pollution-into-resource-for-human-use-for-the-benefit-of-global-users/ar-AA1hkW41?ocid=msedgntp&cvid=669e0f8b86514f248d5932934febc833&ei=9
Must use external energy in the catalytic process but it doesn’t mention what form or how much.
Sounds a lot like free lunch. And as we all know....
