From Botanical Extracts to Functional Nanocatalysts: A Critical Review of Green Synthesis and Photocatalytic PerformanceT.V. Surendra, Gubbala V. Ramesha, N. Mahender Reedya and D. SarithaEPJ Web Conf., 356 (2026) 01014DOI: https://doi.org/10.1051/epjconf/202635601014