Published Paper Details:

The development of sustainable and eco-friendly catalytic systems has emerged as a central focus in modern synthetic chemistry. In this study, a green and cost-effective approach is reported for the synthesis of calcium carbonate (CaO) nanocatalysts using Musa paradisiaca (banana) leaf extract as a natural reducing and stabilizing agent. The biogenic route eliminates the need for hazardous chemicals, offering an environmentally benign alternative while enhancing the physicochemical properties of the nanomaterial. The synthesized CaO nanocatalysts were systematically characterized using standard analytical techniques, confirming their nanoscale morphology, high surface area, and crystalline nature.Exploiting these features, the prepared nanocatalyst was successfully employed as an efficient heterogeneous catalyst for the synthesis of N-Morpholinobenzothioamide under mild and sustainable conditions. The catalytic system demonstrated excellent activity, affording high yield, reduced reaction time, and easy product isolation. Furthermore, the catalyst exhibited good reusability and stability, highlighting its practical applicability in green organic synthesis.This work not only provides a novel utilization of plant-mediated nanotechnology but also establishes a greener synthetic pathway for thioamide derivatives. The integration of renewable biological resources with nanocatalysis underscores a promising strategy toward environmentally responsible chemical processes and sustainable development in organic synthesis.