Need help finding a gas or liquid that absorbs IR and allows visible.

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hemi426
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I am trying to find a gas or liquid that likes to absorb the lower portion of the IR sperctrum (700–1400nm) but let's visible light pass (380-750nm). It can be a liquid or gas because it is going in a sealed container.

I know that water absorbs infrared to a certain extent and that's why the oceans appear blue for the most part. I have also been looking into the greenhouse gas effect and how it helps to trap the heat using water vapor, CO2 and CO3/ozone.
What are the best absorbers of IR that transmit visible light?

Thanks in adavnce
:smile:
 

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