Enhanced two-electrode photoelectrochemical biosensing platform amplified by bilirubin oxidase labelling

Electrochemistry/Photoelectrochemistry-Based Immunosensing and Aptasensing of Carcinoembryonic Antigen

“…The formation of TiO2@Au NPs//CdS QDs plasmonic conformation contributed to the direct cathodic-to-anodic signal switch, making the detection limit of aptasensor decrease to 18.9 fg mL -1 . To further improve the detection selectivity of sensing devices, a robust twoelectrode aptasensor was designed by selecting ZnIn2S4 nanocrystal-decorated Fe 3+ -doped TiO2 nanotubes/Ti as photoanodes and CEA aptamer-bilirubin oxidase conjugatemodified Au NPs/carbon nanotubes/ITOs as photocathodes [126]. Among them, the To further improve the detection selectivity of sensing devices, a robust two-electrode aptasensor was designed by selecting ZnIn 2 S 4 nanocrystal-decorated Fe 3+ -doped TiO 2 nanotubes/Ti as photoanodes and CEA aptamer-bilirubin oxidase conjugate-modified Au NPs/carbon nanotubes/ITOs as photocathodes [126].…”

“…To further improve the detection selectivity of sensing devices, a robust twoelectrode aptasensor was designed by selecting ZnIn2S4 nanocrystal-decorated Fe 3+ -doped TiO2 nanotubes/Ti as photoanodes and CEA aptamer-bilirubin oxidase conjugatemodified Au NPs/carbon nanotubes/ITOs as photocathodes [126]. Among them, the To further improve the detection selectivity of sensing devices, a robust two-electrode aptasensor was designed by selecting ZnIn 2 S 4 nanocrystal-decorated Fe 3+ -doped TiO 2 nanotubes/Ti as photoanodes and CEA aptamer-bilirubin oxidase conjugate-modified Au NPs/carbon nanotubes/ITOs as photocathodes [126]. Among them, the photoanodes generated a stable photocurrent output, and the cathodic substrate presented excellent biorecognition and oxygen-reduction capability.…”

“…Linear Range (pg mL −1 ) Detection Limit (pg mL −1 ) Reference PEDOT/Bi 2 S 3 /ZnO 1.0-100,000 0.67 [130] g-C 3 N 4 /CuInS 2 20-40,000 5.2 [131] ZIS/Fe:TiO 2 0.05-1000 0.018 [126] NaYF 4 :Yb,Tm@ZnO 100-300,000 32 [132] Tremella-like Bi 2 WO 6 0.01-10,000 0.0026 [133] BiFeO 3 5.0-50,000 1.5 [134] ZnO/g-C 3 N 4 -AuNPs 10-2500 1.9 [135] g-C 3 N 4 /CuInS 2 , copper indium disulfide-sensitized graphitic-like carbon nitride; ZIS/Fe:TiO 2 , ZnIn 2 S 4 nanocrystal-functionalized Fe 3+ -doped TiO 2 ; BiFeO 3 , bismuth ferrite; ZnO/g-C 3 N 4 -AuNPs, g-C 3 N 4 -AuNPs-functionalized ZnO flower-rods.…”