The surface of glass bottles can be roughened to create a better surface for adhesion by treating them with phosphoric acid.
I want to build a tromb wall and wonder if they would be suitable
So what is the thermal gain on a glass bottle wall?
but the airspace in the glass bottle itself will not act as a thermal mass in the same way as the glass in the bottle.
Glass, cob and brick are very similar in their ability to store heat.