Microwave-assisted synthesis of carbon dots from eggshell membrane ashes by using sodium hydroxide and their usage for degradation of methylene blue

Carbon dots is a recent member of carbonaceous nanomaterial with particle size below 10 nm, equipped with unique fluorescent properties under UV light irradiation

Bella Nathanael Jusuf; Nonni Soraya Sambudi; Isnaeni; Shafirah Samsuri

2018

Scholarcy highlights

  • Carbon dots is a recent member of carbonaceous nanomaterial with particle size below 10 nm, equipped with unique fluorescent properties under UV light irradiation
  • The fluorescence intensity of C-dots was increased by increasing pH of solution
  • The synthesized C-dots have an average size of 3.88 nm
  • The degradation of methylene blue under sunlight by C-dots can be achieved by more than 50% for concentration less than 10 ppm
  • Many methods for the production of C-dots have been reported by introducing carbon-rich waste
  • The optimum time in preparing the C-dots and the highest photoluminescence intensity are achieved for 1 min and by using 1 mol L−1 NaOH, respectively
  • They are found to be able to degrade methylene blue under sunlight irradiation, with increasing degradation ranging from 26% to 43% for 5 ppm to 1 ppm concentration of methylene blue

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