Dear all,

I am planning on regenerating/reusing TiO2 for gold photoreductor. I want to remove deposited gold from TiO2 surface without destructing the titania itself.

Is it possible if i just disperse the used-TiO2 in aqua regia to dissolve the gold metal then reacquire TiO2 particles again? Is there any other way? A little bit “greener” maybe.

Thanks in advance.. 

Any help, ideas, and suggestions are most welcome.