Ultrasensitive photoelectrochemical aptasensor for diclofenac sodium based on surface-modified TiO2-FeVO4 composite

• Published in: Analytical and bioanalytical chemistry Vol. 413; no. 1; pp. 193 - 203
• Main Authors: Yang, Liwei, Li, Lele, Li, Fen, Zheng, Hejie, Li, Tongtong, Liu, Xiaoqiang, Zhu, Jichun, Zhou, Yanmei, Alwarappan, Subbiah
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.01.2021; Springer Nature B.V
• Subjects: absorption; Analytical Chemistry; Aptamers; aptasensors; Biochemistry; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Conduction bands; Defects; Deposition; detection limit; Diclofenac; Doping; electric current; electrodes; Electromagnetic absorption; Energy gap; Energy levels; Energy transfer; Food Science; Gold; Heterojunctions; Holes (electron deficiencies); Laboratory Medicine; light; Monitoring/Environmental Analysis; nanogold; Nanoparticles; Nanospheres; Nonsteroidal anti-inflammatory drugs; oligonucleotides; oxygen; Photoelectric effect; Photoelectric emission; Recombination; Research Paper; Sodium; Titanium dioxide; X ray photoelectron spectroscopy; O-TiO; Resonance energy transfer; self-doping; Ti; heterojunction; FeVO; Photoelectrochemical aptasensor; Oxygen vacancy

Herein, a photoelectrochemical (PEC) aptasensing platform was designed by integrating surface oxygen vacancy (OV) defects, Ti 3+ self-doping, the heterojunction, and resonance energy transfer (RET) effect into one platform for the detection of diclofenac sodium (DCF). Briefly, OV defects were introd...