The green synthesis of highly fluorescent Carbon Quantum Dots via hemp seeds by hydrothermal treatment

In this work, highly fluorescent Carbon Quantum Dots (CQDs) were synthesized by hydrothermal treatment using hemp seeds as green precursor and water as solvent. In order to investigate the different physicochemical and optical features of as-prepared CQDs, a wide range of diverse analyses, including Fourier Transform Infrared (FTIR) and Photoluminescence (PL) spectroscopy, were conducted. The findings demonstrated that the as-prepared CQDs exhibited distinct features, including good water solubility, diverse functional groups, and excellent luminescence under optimal excitation wavelength. Also, the results indicated that different excitation wavelengths affect the fluorescence properties of the synthesized CQDs. Indeed, the best fluorescence emission (~ ۶۰۰) was obtained at the optimal excitation wavelength (۳۷۰ nm). Furthermore, it can be expected that the synthesized CQDs based on changes in their fluorescence emission (Turn-off or Turn-on) will be able to detect a wide range of analytes, such as vitamins, Proteins, amino acids, food additives, pharmaceutical residues, and heavy metals.

کلیدواژه ها:

Carbon Quantum Dots ، Hydrothermal treatment ، Hemp seeds ، Fluorescence emission