Green synthesis of carbon nanodots from cotton for multicolor imaging, patterning, and sensing

Bioimaging Applications of Carbon Nanodots: A Review

“…In another study, CNDs produced from histidine were able to enter cell nucleus of AD-293 cells [6]. Similarly, Wen et al utilized CNDs from cotton to label both cell nucleus and cytoplasm of A193 cells [18]. many different (micro)organisms (from prokaryotes to mammals).…”

“…In contrast, breaking down macroscopic materials (such as food products and plants) to produce CNDs, is the principle of top-down approach [3,13]. Many different materials have been used to develop CNDs, including apple seeds [14], Citrus sinensis or Citrus limon peels [15], human fingernails [16,17], cotton [18], citrulline [19], coriander leaves [20], carrot juice [21], citric acid and tris(hydroxymethyl) methylaminomethane [22], polyethyleneimine, nitric acid [23], and many others. Additionally, many different procedures can be employed to produce CNDs, with the most commonly employed method being the solvothermal carbonization, pyrolysis, and microwave treatment [7,[24][25][26][27].…”

Photocatalytic hydrogen generation coupled to pollutant utilisation using carbon dots produced from biomass

“…[2][3][4][5][6][7] Lignocellulosic waste is a particularly attractive low-cost precursor for CD synthesis, as it is the largest sustainable source of organic carbon worldwide (2.2 × 10 14 kg), 8,9 and does not compete with food production 10 and biofuel synthesis. 11 Biomass-derived CDs are currently under investigation in bioimaging, 12 drug delivery 13 and selective ion sensing, [14][15][16] but their use in photocatalysis is less common and restricted in photoreduction of Au 3+ /graphene oxide composites 17 and organic oxidation without 'green' fuel formation. [18][19][20][21] Most photocatalytic systems do not only rely on non-scalable and toxic photocatalysts, but also require operation in organic solvents and/or purified water, in the presence of expensive sacrificial electron donors (SEDs).…”

Fluorescent carbon nanoparticles for sensitive and selective detection of palladium (Pd2+)

“…Currently many optical and electronic properties of CNPs have not been well controlled because of the unpredictable synthesis process of CNPs, resulting in the unpredictable chemical structure of CNPs. Although CNPs synthesis using inexpensive, recycling source and easy obtained natural materials, such as food waste 44 , milk 34 , cotton 29 and soy milk 45 as precursors have gained much attention as green synthetic route in recent years, the complicity of the precursors could cause more obstacles in…”

“…All these features suggest that the as-synthesized CNPs hold great potential in cancer phototherapy. Recently Wen et al 29 also prepared CNPs using cotton through pyrolysis and microwave methods. The as-prepared blue fluorescent CNPs showed high selectivity and sensitivity toward Fe 3+ detection with a limit of detection as low as 2.7 × 10 -8 M.…”