The research and development have increased regarding rare-earth-based mixed-metal oxide nanostructures as a notable category of materials with unique characteristics, and as one of the most substantial fields of research in the last decades. Many studies have demonstrated their outstanding usage in different fields, specifi-cally solar photocatalytic applications. Recent advances in the production techniques and photocatalytic usages of Ln2B2O7 (B=Zr, Ce, and Sn) nanostructures have been summarized in this chapter. Diverse methods have been presented for the fabri-cation of lanthanide zirconate, lanthanide stannate, and lanthanides for ceramics production. Briefly, the privileges and disadvantages of every fabrication method have been introduced in this chapter. Ultimately, solar photocatalytic applications of rare-earth-based mixed-metal oxide nanostructures are reviewed as well.
