I agree, but I want to thanks the authors, the OP and everyone in between for remembering to add "energy" to the title.

I've seen many silar articles with a title like "Two-step system makes plastic from thin air" that clearly ignores that the device must be plugged in to work.

With enough energy there is no shortage of drinking water, for instance - as long as it contains hydrogen and oxygen, we can extract it.

When you can add any amount of energy into it, many problems become quite simple.