Carbon Nanoparticles from Lactose and Baking Soda: Light Absorption and Fluorescence

• Benedikt Klobes ^[1] ; Christine Koch ^[1]
  1. [1] University of Applied Sciences

     University of Applied Sciences

     Region Hannover, Alemania

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 97, Nº 1, 2020, págs. 143-146
• Idioma: inglés
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• Resumen

  • Fluorescent carbon nanoparticles were prepared using an α-lactose and baking soda based colloidal synthesis route. The existence of the synthesized carbon nanoparticles (CNPs) was detected using the Tyndall effect while their optical properties were investigated by ultraviolet–visible absorption and fluorescence spectroscopy. The CNPs exhibit characteristic light absorption around 310 nm and distinct fluorescence within the interval from 450 to 600 nm upon irradiation with ultraviolet light. Due to the simple and fail-proof synthesis, this activity is well-suited for a hands-on introduction of nanoparticle synthesis and optical phenomena such as fluorescence to chemistry freshman and high school students.