Controllable synthesis of CeO2/g-C3N4 composites and their applications in the environment

The ultrafine CeO₂ cubes and g-C₃N₄ formed a heterojunction structure. CeO₂/g-C₃N₄ nanocomposites were proved to be highly selective and sensitive sensors for the detection of trace amounts of Cu²⁺, and showed high photocatalytic activity.