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- 저자 : Aline C.C. Pena (검색결과 1 건)
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Green carbon dots synthesized from Chlorella Sorokiniana microalgae biochar for chrome detection
Aline C.C. Pena,Lucas Manique Raymundo,Luciane F. Trierweiler,Mariliz Gutterres 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.117 No.-
In the quest to find an economical and accurate method of detecting toxic metals as well as finding anapplication for biochar as a fuel, this work used microalgae biochar to sinter Carbon Dots (CDs) thatcan be used as pathways for metallic ions detection. Carbon Dots from microalgae biochar (generatedin pyrolysis) were synthesized through thermochemical depolymerization with KMnO4 at different concentrations. After this step, the purification of the nanoparticles was performed. The characterization ofCDs was performed through fluorescence intensity, Zeta Potential, Fourier Transform InfraredSpectroscopy (FTIR), and atomic force microscopy (AFM). The results showed that all samples exhibitedfluorescence, samples synthesized with KMnO4 at concentrations of 8.54 % and 10.0 % (CD-MBK06 andCD-MBK07, respectively) showed the highest fluorescence intensity and good stability. When addingCr (VI) and Cr (III) to the CD-MBK06 and CD-MBK07 samples, it is possible to notice that there was fluorescencequenching as the metal ion concentration increased, except for the CD-MBK07 sample for Cr(III), at a length of 350 nm, indicating that this sample shows selectivity for extinction only for Cr (VI).
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