Exploring the Biosynthesis of Metal Nanoparticles from Coleus anthonyi Leaf Extract: A Comprehensive GC-MS Analysis of a Novel Plant's Potential

The development of plant extract-based and other green synthesis methods for fabricating nanomaterials has garnered significant attention due to their eco-friendliness and cost-effectiveness. This research focuses on the green synthesis, characterization, and dye degradation properties of silver nanoparticles (AgNP-CA) using the leaf extract of Coleus anthonyi (CA) and microwave irradiation. The synthesized nanoparticles were characterized using UV-visible spectrophotometry, X-ray diffraction, Fourier-transform infrared spectroscopy (FT-IR), dynamic light scattering (DLS), zeta potential analysis, and scanning electron microscopy. These characterizations confirm the successful synthesis of AgNP-CA from the leaf extract of Coleus anthonyi. Moreover, the observed monodisperse nanoparticle formation, with a size of 56.6 nm through DLS analysis, underscores the achievement of uniform particle size distribution. The recorded zeta potential value of -33.4 mV indicates the potential stability of the produced AgNP-CA. The synthesized AgNP-CA exhibited enhanced catalytic efficiency for degrading the organic dye, methyl orange, resulting in a significant reduction in its concentration. Furthermore, this study explores the major phytochemical content of Coleus anthonyi leaf extract using GC-MS analysis, revealing the presence of beta-asarone, 9-(2-hydroxy3-methyl-3-butenyl oxy)-4-methoxy furo(3,2-g)chromen-7-one, 1-phospha cyclopentadiene, 2,3,4,5-tetraethyl-1-oxo-1-phenyl, and 1,1'-biphenyl, 4-ethyl-4'-(4-propylcyclohexane). This comprehensive investigation highlights the potential of Coleus anthonyi leaf extract for the green synthesis of silver nanoparticles and underscores their promising catalytic applications.