▎ 摘　　要

Synthesis and characterization of Lanthanum Oxide-reduced graphene oxide (La2O3/RGO) nanocomposite and its application as heterogeneous, reusable catalyst has been reported in this article. Biologically important molecules bis(indolyl)methanes are synthesized in mild reaction condition with excellent yield under solvent free condition. Catalyst was reused for four times without any significant changes in the yields obtained. Reusability, green synthesis and environmentally benign nature makes La2O3/RGO one of the best catalyst for the synthesis of biologically important bis(indolyl)methanes.