HLLW contains more than 200 isotopic nuclides of more than 30 elements, of which there are dozens of radionuclides. Because of its great potential harm to the environment, the treatment process of high-level waste liquid has been one of the key research points interiorly and abroad. In recent years, g-C3N4 as a novel semiconductor photocatalyst has many advantages, such as strong oxidation ability, high temperature stability, chemical stability and response to visible light&lt;span style="font-size:10.8333px"&gt;. &lt;/span&gt;g-C3N4 is a kind of layered graphite structure, the basic unit is the heptazine ring. The heptazine ring lies between the layers. g-C3N4 has a narrow bandgap width of 2.7eV and a maximum absorption wavelength of 460nm. What’s more, it has good absorption in visible region and high electron migration efficiency. However, due to the high recombination rate of photogenerated electron-hole, the photocatalytic performance of g-C3N4 is not excellent enough. The ways to improve the photocatalytic performance of g-C3N4 are noble metal loading, non-metal / metal element doping, semiconductor composite and so on&lt;span style="font-size:10.8333px"&gt;.&lt;/span&gt; The pore size of g-C3N4 can be adjusted to change its specific surface area. It can also be modified and functionalized by adding non-metallic elements doped with g-C3N4 or introducing functional groups with high affinity to nuclides&lt;span style="font-size:10.8333px"&gt;. &lt;/span&gt;

Application of g-C3N4 in enrichment and separation of nuclides in HLLW

256th National Meeting (2018)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.