Ultrasensitive PEC aptasensor based on one dimensional hierarchical SnS2|oxygen vacancy-WO3 co-sensitized by formation of a cascade structure for signal amplification

• Published in: Sensors and actuators. B, Chemical Vol. 351; p. 130966
• Main Authors: Zhang, Si, Zheng, Hejie, Jiang, Renjun, Yuan, Jiangfeng, Li, Fen, Qin, Tengteng, Sakthivel, Arunkumar, Liu, Xiaoqiang, Alwarappan, Subbiah
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 15.01.2022; Elsevier Science Ltd
• Subjects: Amplification; Cadmium sulfide; Charge transfer; Cosensitization; Dual-signal amplification; Energy levels; Gene sequencing; Growth factors; Heterojunctions; Nanocomposites; Nanorods; Oxygen vacancies; Photoelectrochemical aptasensing; Quantum dots; Recycling; SnS2; Tin disulfide; Vacancies; WO3 nanorods; Dual-signal amplification; Oxygen vacancies; WO3 nanorods; Photoelectrochemical aptasensing; SnS2; Cosensitization

Herein, we developed a photoelectrochemical (PEC) aptasensing platform that relies on a dual-signal amplification strategy. The proposed PEC system consists of a one dimensional (1D) hierarchical SnS2|OV (oxygen vacancy)-WO3 nanorods (NRs) sensitized by CdS quantum dots (QDs)/TCPP (TCPP: meso-tetra(...