de Morais Ulisses N, Therézio Eralci M, Terezo Ailton J, Siqueira Adriano B
Institute of Chemistry, Rede MT-NanoAgro/GENMAT-Federal University of Mato Grosso (UFMT), Cuiabá, Mato Grosso 78060-900, Brazil.
Institute of Physics, Federal University of Mato Grosso, Cuiabá, Mato Grosso 78060-900, Brazil.
ACS Omega. 2025 Aug 16;10(33):36985-36993. doi: 10.1021/acsomega.4c11597. eCollection 2025 Aug 26.
The sugar cane refining industry is crucial in producing sugar and biofuel ethanol. However, as demand for these products has grown, so has the generation of waste, with vinasse emerging as the primary pollutant. This study investigates the potential of utilizing vinasse as a raw material to produce carbon dots (BioC-dots), a high-value product. Application of the synthesized BioC-dots in metal ion detection is yet to be explored. Luminescent nanocarbons (BioC-dots) were successfully synthesized from vinasse using a green synthesis method and characterized through transmission electron microscopy (TEM) imaging, UV-vis spectroscopy, and photoluminescence spectroscopy, which revealed a quantum yield ranging from 2.5% to 19%. TG-DTA curves and FTIR spectra revealed a remarkable thermal behavior and main functional groups of the surface of nanocarbon. The interaction of metals with BioC-dots in solution demonstrated their potential as effective sensors for cobalt and zinc ions in aqueous environments, showing detection limits of 13.57 and 18.22 mmol L, respectively.
甘蔗精炼行业在生产糖和生物燃料乙醇方面至关重要。然而，随着对这些产品需求的增长，废弃物的产生也随之增加，酒糟成为主要污染物。本研究探讨了将酒糟用作生产高价值产品碳点（BioC-点）的原材料的潜力。合成的BioC-点在金属离子检测中的应用尚未得到探索。采用绿色合成方法成功地从酒糟中合成了发光纳米碳（BioC-点），并通过透射电子显微镜（TEM）成像、紫外可见光谱和光致发光光谱对其进行了表征，结果显示量子产率在2.5%至19%之间。TG-DTA曲线和FTIR光谱揭示了纳米碳表面显著的热行为和主要官能团。金属与溶液中BioC-点的相互作用证明了它们作为水环境中钴和锌离子有效传感器的潜力，检测限分别为13.57和18.22 mmol/L。
