Analytical performance of cerium oxide and its hybrid composites for electrochemical and gas sensing applications

Recent years have witnessed growth in the design and fabrication of cerium oxide (CeO₂) based materials for sensing applications. This review summarizes the recent progress in the fabrication of CeO₂ based sensors for the monitoring of environmental pollutants and biomedical diagnostics. The synthesis methods for the construction of CeO₂ based materials have been compiled. Furthermore, electrochemical sensors based on CeO₂ and its hybrids with carbon, polymers, MOFs, etc. are discussed for the quantification of various analytes. The importance of CeO₂ based materials as electrode modifiers for electrochemical sensing application has been discussed. Subsequently, progress in CeO₂ based materials for gas sensing technology has been summarized. The analytical performance of electrochemical as well as gas sensors has been discussed. The limitations, future trends, and perspectives of CeO₂ based composite materials for electrochemical and gas sensors have been discussed.