Green synthesis route for nickel oxide nanoparticles (NiONPs) using Acorus calamus leaf extract and evaluates their photocatalytic, antibacterial, and anticancer properties - Kumar Manimaran; Thammasak Rojviroon; Orawan Rojviroon; Ranjith Rajendran; Gayathri Segaran; Sumonman Niamlang (South African Journal of Botany, 2026)