New Alumina-Based Novel Ceramic Nanopigments: An Alternative to the Purple of Cassius

摘要

The present article presents first comparative study on three different dry solgel methods of producing new alumina-based dark violet, light pink ceramic nanopigments as well as ruby-red ceramic nanopigment - an alternative to the Purple of Cassius. Gold nanoparticles are built directly on a carrier of an aluminum oxide nanopowder, which finally yields Al_2O_3/ Au nanopowders possessing colors ranging from light pink to light violet as well as ruby-red.