Black (nano)gold combat climate change

By using the techniques of nanotechnology, we transformed golden gold to black gold, by simply changing the size and gaps between gold nanoparticles. Now, like real trees, where they use CO2, sunlight and water to produce food, our developed black gold act like an artificial tree and use CO2, sunlight and water to produce fuel. Notably, black gold can also use to convert sea water into drinkable water using the heat that black gold generates after it is shined with sunlight.