Eco-Friendly and one pot synthesis of fluorescent carbon quantum dots from teak tree leaves through hydrothermal treatment.

Abstract

This study describes the synthesis of environmentally friendly fluorescent carbon quantum dots (CQDs) derived from teak tree leaves (Tectona grandis) using a straightforward one-pot hydrothermal method. This method offers a sustainable approach to the synthesis of CQDs by utilizing renewable biomass resources. The synthesized CQDs exhibit nano-sized particles and possess strong fluorescence characteristics. Treatment with H2O2 facilitates the breakdown of the leaves structure and the formation of functional groups on their surface which enhanced their potential for the degrading hazardous chemical dyes like methylene blue (MB). The synthesized samples were extensively characterized using UV-Vis spectroscopy, photoluminescence spectroscopy, FTIR for functional group analysis, and Zeta potential measurements. Surface morphology and particle size were analyzed through TEM, SEM, EDX, and Histogram analysis. These CQDs demonstrate outstanding photocatalytic activity, achieving an impressive 98% degradation efficiency when exposed to visible light irradiation. Chemical oxygen demand (COD) analysis confirmed the high efficiency of photodegradation under visible light conditions. The combination of their eco-friendly synthesis method and superior photocatalytic performance underscores the potential of CQDs derived from teak as effective and sustainable materials for applications in environmental remediation. This research contributes to advancing the development of renewable nanomaterials for addressing environmental pollutants, suggesting a promising future for biomass-derived CQDs in various water treatment technologies and beyond.