The synthesis of fluorescent carbon quantum dots for tartrazine detection in food: a novel one-step microwave heating approach

The green synthesis of highly fluorescent carbon quantum dots through microwave heating using honey for optical detection of Ibuprofen.

“…Therefore, the freedom of action of functional groups was limited, and the FL emission of GCDs was quenched. [9,27,[52][53][54] Moreover, the ndings indicated that the changes in the FL intensity of as-prepared GCDs had a good linear regression correlation with the concentrations of IBP in the range of 0-100 µM (Fig. 6b).…”

“…3c, three main elements including carbon (C1s, 284.4 ev, 50.21%), nitrogen (N1s, 399.42 ev, 28.8%), and oxygen (O1s, 532.10 ev, 20.99%) were observed in the XPS spectrum of as-prepared GCDs, which is completely consistent with the results of FTIR and EDS analyses. [9,46,47] The different applications of nanoparticles depend signi cantly on the morphology and size of the particles. The morphology and size of the as-prepared GCDs was evaluated by HRTEM images.…”

“…Since 2004, carbon quantum dots or carbon dots (CQDs, CDs) as a new kind of nanomaterials was used in different elds such as biosensing and bioimaging, [1,2] photocatalysis, [3,4] drug delivery, [5,6] and solar cells [7,8] due to their unique properties including high water solubility, low-toxicity, different functional groups, and excellent optical features. [9][10][11] Despite of other nanoparticles, CDs can be synthesize through wide range of precursors such as diverse chemicals, waste materials, and fruits. [12][13][14] However, the existence of some drawbacks such as the toxicity of chemicals and the time-consuming nature of some processes have led researchers to be encouraged to use the green synthesis of CDs.…”

Carbon quantum dots with honeycomb structure: a novel synthesis approach utilizing cigarette smoke precursors

“…Carbon Quantum Dots (CQDs) have emerged as a fascinating class of nanomaterials due to their unique optical properties and potential applications in various fields, including optoelectronics, bio-imaging, sensing 1 , 2 , and energy conversion 3 – 9 . They are nanoscale carbon-based particles with sizes typically less than 10 nm, consisting of a graphitic core surrounded by a surface passivated with functional groups 10 , 11 .…”