Photoelectrochemical enzymatic sensor for glucose based on Au@C/TiO nanorod arrays.

In this work, a photoelectrochemical (PEC) glucose biosensor was synthesized on the basis of a type of Au@C/TiO composite by using an unsophisticated secondary hydrothermal strategy. The compounded Au@C/TiO material was characterized by XRD, SEM, TEM, UV-vis, and XPS to identify the composition and the purity of the phase. Glucose oxidase (GODx) was immobilized on the Au@C/TiO.

Constructing a TiO/PDA core/shell nanorod array electrode as a highly sensitive and stable photoelectrochemical glucose biosensor.

Developing stable PEC glucose biosensors with high sensitivity and low detection limit is highly desirable in the biosensor field. Herein, a highly stable and sensitive enzymatic glucose photoelectrochemical biosensor is rationally designed and fabricated by constructing TiO/PDA core/shell nanorod arrays. The TiO nanorod as the core has the advantages of increasing charge transportation towards interfaces and enhancing the absorption of incident sunlight due to its single-crystal nature and one dimensional array structure.