The oral presentation titled "Highly efficient solar light-driven BiOX (X=Br/Cl/I) and BiOY heterojunction (Y=Br/Cl) nano photocatalysts in suspended and immobilized forms for malachite green dye wastewater treatment" presented by Dr. Hari Mahalingam (Coauthors: Sukriti Mishra and Manasa Mandhan) has been awarded the Econeeds foundation sponsored best oral presentation in the international conference on advances in sustainable research for energy and environment management (ASREEM 2021) held at NIT Surat during August 6 - 8, 2021.