INTERNATIONAL 8th USBİLİM HEALTH, ENGINEERING AND APPLIED SCIENCES CONGRESS
BIOLOGICAL SYNTHESIS and CHARACTERIZATION of FLOWER-SHAPED HYBRID NANOSTRUCTURES USING Lobaria pulmonaria LICHEN EXTRACT
Yayıncı:
Akademik Paylaşım Platformu Publishing House - APP Publications
Organic@inorganic-based hybrid nanostructures with diverse morphologies and structural properties have shown potential for applications in solar cells, sensors, water purification, enzymatic, antimicrobial, and anticancer applications. However, the use of expensive and limited biomolecules such as enzymes and DNA in flower-shaped hybrid nanostructures poses challenges in terms of cost and availability, thus limiting their application. Recently, plant extracts, including lichen extracts, have been explored as sustainable and cost-effective alternatives for the synthesis of flower-shaped hybrid nanostructures. Lichen extracts facilitate nanoparticle synthesis without the need for toxic chemical agents, leveraging their inherent biomolecules to reduce metal ions efficiently and economically. In this study, an eco-friendly and cost-effective biosynthesis method was used to produce copper-based flower-shaped hybrid nanostructures utilizing Lobaria pulmonaria (L.) Hoffm. lichen extract. Acting as a reducing agent without the requirement of toxic chemicals, the lichen extract enabled an environmentally benign nanoparticle production. During synthesis, copper ions were incubated with the extract under various pH conditions using a PBS buffer. The resulting blue solutions were centrifuged, washed with distilled water, and subsequently dried. The hybrid nanostructures were subjected to extensive characterization analyses. The surface morphology was examined using field emission scanning electron microscopy (FE-SEM), and elemental composition was identified through energy-dispersive X-ray spectroscopy (EDX). FT-IR analysis confirmed the presence of functional groups such as alcohol (-OH), carboxylic acid (C=O), and amine (N-H) in the nanostructures. For example, FT-IR spectra displayed peaks at 3427 cm-1 indicative of alcohol groups, while peaks at 1750 cm-1 and 1711 cm-1 corresponded to carboxylic acid and ester groups, respectively. Peaks at 1298 and 1228 cm-1 were associated with aromatic rings, and those at 1147 cm-1 represented amine (C-N) groups. This study demonstrates that biological sources like Lobaria pulmonaria can serve as environmentally sustainable alternatives for nanoparticle synthesis. Compared to chemical and physical methods, biosynthesis reduces the use of toxic chemicals, simplifies the production process, and facilitates the development of biocompatible nanomaterials suitable for biomedical and industrial applications.
