Chem. J. Chinese Universities ›› 2025, Vol. 46 ›› Issue (6): 20240313.doi: 10.7503/cjcu20240313

• Article • Previous Articles     Next Articles

Preparation of Broad-spectrum UV Protection Carbon Dots for the Application of Sunscreen Absorber

CHEN Qidan1,2(), CHEN Guanji1,2, YOU Shanmei1, ZANG Xinyao1,2, YANG Bai2,3()   

  1. 1.School of Life Sciences,College of Zhuhai Science and Technology,Zhuhai 519041,China
    2.Zhuhai Institute,Jilin University,Zhuhai 519041,China
    3.State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jilin University,Changchun 130012,China
  • Received:2024-06-26 Online:2025-06-10 Published:2024-08-02
  • Contact: CHEN Qidan E-mail:qidanchen@jlu.edu.cn;byangchem@jlu.edu.cn
  • Supported by:
    the Guangdong Special Foundation for the Major Program of Higher Education, China(2020ZDZX2036);the Zhuhai Basic and Applied Basic Research Foundation, China(ZH22017003200015PWC);the Three Levels of Talent Project of Zhuhai College of Science and Technology, China

Abstract:

Sunscreen absorber, the basic ultraviolet(UV) protection additives that absorb UV rays, is the active ingredient in sunscreen products. However, traditional sunscreen absorbers are known as organic and inorganic chemicals which have problems such as unknown toxicity for human health and environment, instability, poor water solubility, and a narrow range of UV absorption, the study of eco-friendly broad-spectrum sunscreen absorber materials is important for the application of sunscreen products. In recent years, carbon dots have shown good properties in the application of UV absorbers due to their chemistry stability, eco-friendly, excellent UV absorption efficiency. In this study, two kinds of carbon dots(named O-CDs and A-CDs, respectively) were prepared from dopamine hydrochloride and o-phenylenediamine, citric acid and urea independently by simple one-pot hydrothermal synthesis method, purified by column chromatography and then characterized by X-ray photoelectron spectroscopy(XPS), transmission electron microscopy(TEM), X-ray diffraction(XRD), Fourier transform infrared spectroscopy(FTIR), Ultraviolet-visible spectroscopy(UV-Vis), and fluorescence spectroscopy. The results showed that a broad-spectrum UV protection material named as B-CDs was developed by mixing O-CDs and A-CDs with the optimized mass ratio of 1∶1.5. In addition, the B-CDs were added as a broad-spectrum UV absorber to polyvinyl alcohol(PVA) solution to prepare the UV protection calligraphy ink, and the sunscreen effect stability of the ink was tested in a certain period(120 h). The results indicated that the broad-spectrum carbon dots UV absorber is high- efficiency and stable, and carbon dots have the potential to be used as ideal photostable broad-spectrum UV absorber additives for sunscreen products.

Key words: Carbon dots, Broad-spectrum UV protection, Sunscreen absorber

CLC Number: 

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