Preparation of AgCl with enhanced photocatalytic activity using ionic liquid as chlorine source


In this study, Ag/AgCl photocatalysts were prepared by using chloride ionic liquid (IL) as a chlorine source. The structure, composition, morphology, light response ability and surface properties of IL-AgCl were characterized by X-ray diffraction, scanning electron microscope, X-ray photoelectron spectroscopy, Raman spectroscopy, UV–Vis diffuse reflection spectra, specific surface area and surface photovoltage spectrum. The photocatalytic activity of the samples was investigated by measuring the residual concentration of rhodamine B used as a simulated pollutant. The experimental results show that the ionic liquid can promote the stability of AgCl, furthermore, all the IL-AgCl photocatalysts have a higher separation rate of photogenerated charge pairs than the reference AgCl. The surface properties and photocatalytic activity of AgCl prepared tightly relate to the type of IL used, among all the AgCl prepared, AgCl prepared by 1-carboxyethyl-3-methyl-imidazolium chloride has the best catalytic activity.

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This project was supported financially by the Opening Project of Jiangsu Key Laboratory for Environment Functional Materials (SJHG1805) and Opening Project of Key Laboratory of Green Catalysis of Sichuan Institutes of High Education (No. LYJ1603) and Graduate student Innovation Fund of Sichuan University of Science and Engineering (y2019027).

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Correspondence to Junbo Zhong or Jianzhang Li.

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Li, Z., Huang, J., Zhong, J. et al. Preparation of AgCl with enhanced photocatalytic activity using ionic liquid as chlorine source. Appl. Phys. A 126, 554 (2020).

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  • AgCl
  • Ionic liquid
  • Photocatalytic performance
  • Surface property