List of Articles Nilwala Kottegoda Article 1 - Recent Progress in Visible-Light Active (VLA) TiO2 Nano-Structures for Enhanced Photocatalytic Activity (PCA) and Antibacterial Properties: A Review Kasun Seneviratne Imalka Munaweera Sriyani Peiris Colin Peiris Nilwala Kottegoda Iranian Journal of Catalysis , Issue 4 , Year , Summer 2021 Article 2 - The Quest for Sustainable Catalysis through Transition Metal Doped Carbon-based Single-Atom Catalysts 10.30495/ijc.2022.1959026.1935 Chamalki Madhusha Madhavi de Silva Imalka Munaweera Chandani Perera Nilwala Kottegoda Iranian Journal of Catalysis , Issue 4 , Year , Summer 2022