Green production of fluorescent carbon quantum dots based on pine wood and its application in the detection of Fe3+

Ultrasensitive Detection of Tetracycline Using Boron and Nitrogen Co-Doped Graphene Quantum Dots from Natural Carbon Source as the Paper-Based Nanosensing Probe in Difference Matrices

“…However, the addition of Fe 3+ displays an obvious decrease in I/I 0 ratio (0.58), which is similar to that of TC. Several studies have demonstrated the excellent sensitivity of GQD toward Fe 3+ detection [11,17], which is similar to the result obtained in this study. However, the B,N co-doped GQD shows the excellent selectivity toward TC detection.…”

“…In addition, the QY as well as fluorescence intensity of B,N-GQDs fabricated from 6 different sources including local and imported passion fruits are examined to understand the variation of sensing probes from different natural products. As shown in Figure 4 Supplementary materials), which is higher than those reported carbon-based quantum dots fabricated from the natural products including aloe, bamboo tar and gelatin (5.2-34%) [11,40] (Table S3, Supplementary materials).…”

“…Therefore, the QYs of N-GQDs and B,N co-doped GQDs were determined using the standard quinine sulfate solution (Φ = 0.54) in 0.1 M H 2 SO 4 as the reference. The QYs of the N-GQDs and B,N-GQDs using passion fruit juice as the carbon source are calculated to be 27% and 50 ± 1%, respectively ( Figure S6, Supplementary materials), which is higher than those reported carbon-based quantum dots fabricated from the natural products including aloe, bamboo tar and gelatin (5.2-34%) [11,40] (Table S3, Supplementary materials).…”

“…The synthesis of nanomaterials such as silver [ 4 ], gold [ 5 ], magnetic nanoparticles [ 6 ], V 2 O 5 [ 7 ], organic-metal frameworks [ 8 ] and inorganic quantum dots [ 9 ] for biological applications has recently received increasing interest. Moreover, carbon dots (CDs) synthesized from natural carbon sources such as fruit juice [ 10 ], pine wood [ 11 ], vegetable [ 12 ], grass [ 13 ] and tobacco [ 14 ] has been reported to exhibit an excellent optical property for the bio-imaging of microorganisms as well as for the detection of chemicals. Graphene quantum dots (GQDs), a 0-dimensional graphene family fabricated from various carbon sources such as citric acid and glucose, have been demonstrated as a superior fluorescence sensing element for the detection of organic pollutant, heavy metal ions, biological metabolites and cancer markers because of the low toxicity, biocompatibility, easy fabrication and cost effectiveness [ 11 , 14 , 15 , 16 ].…”

“…Moreover, carbon dots (CDs) synthesized from natural carbon sources such as fruit juice [ 10 ], pine wood [ 11 ], vegetable [ 12 ], grass [ 13 ] and tobacco [ 14 ] has been reported to exhibit an excellent optical property for the bio-imaging of microorganisms as well as for the detection of chemicals. Graphene quantum dots (GQDs), a 0-dimensional graphene family fabricated from various carbon sources such as citric acid and glucose, have been demonstrated as a superior fluorescence sensing element for the detection of organic pollutant, heavy metal ions, biological metabolites and cancer markers because of the low toxicity, biocompatibility, easy fabrication and cost effectiveness [ 11 , 14 , 15 , 16 ]. A previous study has fabricated the dopamine-functionalized GQDs for effective detection of Fe 3+ ions [ 17 ].…”