Synthesis and modification of pristine and nitrogen-doped carbon dots by combining template pyrolysis and oxidation

Carbon Dots: An Excellent Fluorescent Probe for Contaminant Sensing and Remediation

“…[39] The template pyrolysis synthesis and oxidation were combined to produce pristine and N doped carbon dots were reported. [40] They also reported that varying the precursor type, synthesis temperature, and oxidation time the color of carbon dots was tuned from green to orange because of the bandgap changes and formation of inter-band states. The bottom-up approach has the advantage of being suitable for mass production, being eco-friendly, and of low cost.…”

Microwave-Assisted Green Synthesis of Carbon Quantum Dots Derived from Calotropis Gigantea as a Fluorescent Probe for Bioimaging

“…Since their surprising discovery in 2004, carbon quantum dots (CQDs) have demonstrated outstanding photo stability, tiny size, highly regulated photoluminescence, biocompatibility, electrochemiluminescence, and extraordinary multi-photon excitation (up-conversion) capacity [7][8][9][10][11]. Since CQDs may be functionalized with biomolecules and are less toxic and chemically inert in nature, hence, they are suitable carriers for drug delivery, biological imaging, and other applications [12][13][14][15][16][17]. Semiconducting quantum dots are often synthesized using relatively expensive precursors, however, repeatability remains a challenge [18,19].…”

Preparing Colour-Tunable Tannic Acid-Based Carbon Dots by Changing the pH Value of the Reaction System

“…Researchers have studied the CDs of various colours prepared with different preparation methods, precursors, and reaction conditions; the results are helpful in determining the main factors affecting the fluorescence mechanism. At present, there are countless methods of CD synthesis, such as laser ablation [ 15 ], pyrolysis [ 16 ], electrochemical oxidation [ 17 ], solvothermal reaction [ 18 ], and microwave treatment [ 19 ]. Biomass resources are widely used to prepare CDs with excellent performance capabilities [ 20 ], because of their wide range of sources and their many advantages, including sustainability, nontoxicity, and renewability [ 15 , 16 ].…”

“…At present, there are countless methods of CD synthesis, such as laser ablation [ 15 ], pyrolysis [ 16 ], electrochemical oxidation [ 17 ], solvothermal reaction [ 18 ], and microwave treatment [ 19 ]. Biomass resources are widely used to prepare CDs with excellent performance capabilities [ 20 ], because of their wide range of sources and their many advantages, including sustainability, nontoxicity, and renewability [ 15 , 16 ]. Therefore, the preparation of excellent biomass-based photoluminescence materials has become a very interesting research topic [ 21 , 22 ].…”