First of all, capturing CO2 out of the air is incredibly inefficient compared to simply not emitting it in the first place. It should be only the last resort after we've completely ceased using all fossil fuels and found that it still isn't enough.
Second, I wonder how much greenhouse gas the manufacturing of this material emits?
Yep, currently industry needs to be cutting down a much emotion as possible, but DAC will probably still be needed in a couple decades, and research takes time so it's still good that it is happening now.
Yeah,and this one shows a lot of promise since it's passive. It doesn't solve the storage problem which is a shame, but combined with something like enhanced weathering, maybe.