In situ growth of TiO₂/Ti₃C₂ MXene Schottky heterojunction as a highly sensitive photoelectrochemical biosensor for DNA detection.

ABSTRACT: In this work, a heterojunction composed of a TiO₂ nanosheet and layered Ti₃C₂ was synthesized by directly growing TiO₂ in Ti₃C₂ MXene. Compared with pure TiO₂, TiO₂/Ti₃C₂ composites had increased surface area, and a light absorption range that extended from ultraviolet to visible light, which greatly extended the life of photogenerated carriers. A photoelectrochemical biosensor for DNA detection was constructed based on the TiO₂/Ti₃C₂ heterogeneous structure, which was comprehensively studied based on photocurrent responses. In the absence of the target, the CdSe QDs were close to the surface of the electrode, resulting in enhanced sensitization and

SUBMITTER: Lai C 

PROVIDER: S-EPMC10230272 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature