Synthesis and Characterization of Biowaste-Derived Carbon Quantum Dots
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초록
내용
Traditional inorganic quantum dots (QDs) are synthesized using heavy metals such as cadmium, lead, and mercury, which are harmful and can lead to environmental contamination. In contrast, carbon quantum dots (CQDs) offer a safer and more eco-friendly alternative due to their low toxicity, environmental sustainability, and biocompatibility. This study employed a green synthesis approach using eco-friendly precursors derived from coffee grounds and fruit waste. Additionally, nitrogen-doped carbon quantum dots (N-CQDs) were produced through a one-step hydrothermal process incorporating a nitrogen source. Both CQDs and N-CQDs were characterized using techniques such as Raman and photoluminescence (PL) spectroscopy, atomic force microscopy (AFM), Fourier-transform infrared (FT-IR) spectroscopy, and UV-visible spectroscopy.