Abstract
This paper studies the mineral materials’ adsorption properties of radioactive chemical elements, it takes the adsorption behavior of uranium (VI) by the synthetic ternary Ca-Mg-Al hydrotalcite as an example, starts from designing and assembling the highly acid-resistant hydrotalcite materials which contain various functional groups, successfully prepares three kinds of hydrotalcite materials by two basic processing technologies, then by using SEM, FT-IR, XPS and other surface technologies and conducting many adsorption experiments, this paper explores and studies the action mechanism and interface effect of the hydrotalcite materials’ adsorption of U(VI). Finally, it obtains relevant conclusions: a series of synthetic LDHs functional materials can be applied to the separation and concentration of radionuclides, and it is further confirmed that, during the U(VI) adsorption process, Ca-Mg-Al-LDH and Ca-Mg-Al-LDOx have surface complexation and electrostatic interaction, and the research results are of great significance for the development and use of efficient, cheap, and sustainable adsorbent materials in the future.
