Researchers from Tokyo Metropolitan University have found that gold nanoparticles supported on a zirconium oxide surface help turn waste materials like biomass and polyester into organosilane compounds, valuable chemicals used in a wide range of applications. The new protocol leverages the cooperation between gold nanoparticles and the amphoteric (both acid and base) nature of the zirconium oxide support. The result is a reaction that requires less demanding conditions—a greener method for upcycling waste.