Modifying surface energy level of citric acid-based carbon dots with polyethylene

Isnaeni Isnaeni; G.A. Permana Putra Sujana; Ismira W. L. Lewa; I. Made Sumadiyasa

doi:10.1117/12.2585439

12 March 2021 Modifying surface energy level of citric acid-based carbon dots with polyethylene

Isnaeni Isnaeni, G.A. Permana Putra Sujana, Ismira W. L. Lewa, I. Made Sumadiyasa

Proceedings Volume 11789, Fourth International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2020); 117890A (2021) https://doi.org/10.1117/12.2585439
Event: Fourth International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2020), 2020, Sanur, Indonesia

Abstract

Carbon dots are unique fluorescent nanoparticles that can be made of many carbon sources. However, carbon source such as plastic is difficult to make carbon dots using simple synthesis procedure due to strong carbon bonds in the plastic material. The utilization of plastic source in carbon dots is a challenge. In this work, we used polyethylene in synthesis of citric acid carbon dots using simple microwave technique. We studied the effect of polyethylene addition on optical properties and surface energy level of carbon dots. We found that absorbance peak of core carbon dot was red shift and absorbance peak of surface level was blue shift due to addition of polyethylene. However, photoluminescence and timeresolved photoluminescence measurements showed that surface energy level was red shifted due to addition of polyethylene. The change of surface functional group was clearly observed using infra-red spectroscopy. Therefore, addition of polyethylene in carbon dots clearly modified surface energy level of carbon dots.

Citation Download Citation

Isnaeni Isnaeni, G.A. Permana Putra Sujana, Ismira W. L. Lewa, and I. Made Sumadiyasa "Modifying surface energy level of citric acid-based carbon dots with polyethylene", Proc. SPIE 11789, Fourth International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2020), 117890A (12 March 2021); https://doi.org/10.1117/12.2585439

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