The synthesis of carbon/cerium oxide composites clusters with the assistance of the glucaminium-based surfactant and their electrochemical performance in the glucose monitoring

The carbon/cerium oxide (CeO2) composites clusters were prepared by a facile solvothermal method with the assistance of a glucaminium-based surfactant (N-decyl-N-methyl-D-glucaminium chloride). The CeO2 has been regarded as an efficient artificial enzyme. The carbon, derived from the glucose-based surfactant, can effectively improve the stability and property of the CeO2, and provide surface defects. The C/CeO2 composites present good electro-catalytic activity towards glucose oxidation. The resultant composites were further used to fabricate modified electrode for the non-enzymatic glucose detection. The electrode, modified by the C/CeO2 composites, can detect glucose in the range of 2.0 μM‒1.8 mM with a detection limit of 0.8 μM. The as-fabricated electrodes also demonstrate good stability and an-interference performance. The C/CeO2 composites have great potential in electrochemical sensors.