Comparison between hydrothermal and microwave-assisted synthesis of carbon dots from biowaste and chemical for heavy metal detection: A review

Pretreated biowaste and pure chemicals can be used as carbon dots precursor

H.K. Melvin Ng; G.K. Lim; C.P. Leo

2021

Scholarcy highlights

  • Pretreated biowaste and pure chemicals can be used as carbon dots precursor
  • Carbon dots can be immobilized into solid substrate
  • Carbon dots have gained scientific popularity due to their photoluminescence properties that are useful for the detection of hazardous materials
  • The hydrothermal duration could be shortened to 1 h under microwave irradiation, but the quantum yield was not significantly improved even using a closed vessel under subcritical conditions
  • CDs could interact with heavy metals differently, resulting in quenching mechanisms such as static, dynamic, inner filter effect, and fluorescence resonance energy transfer
  • The photoluminescence changes allow the quantification of heavy metal concentrations such as mercury, copper, and lead concentration in water samples

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