Flexible photoelectrochemical sensor for highly sensitive chloramphenicol detection based on M-TiO2-CdTe QDs/CdS QDs composite

Molecular Imprinted Poly(2,5-benzimidazole)-Modified VO2–CuWO4 Homotype Heterojunction for Photoelectrochemical Dopamine Sensing

“…Dopamine (DA) as a critical neurotransmitter plays an important role in normal human life and controls the metabolism and functioning of the central nervous, renal, and hormone systems. − Abnormal (low) levels of DA can cause neurological disorders such as hypertension, schizophrenia, Parkinson’s, Alzheimer’s, HIV, and attention-deficit hyperactivity disorder, while high DA levels can make people addicted. − Thus, there is an urgent demand to develop a robust, rapid, sensitive, and selective strategy for DA monitoring for disease prevention and treatment. Various analytical and bioanalytical methods, including colorimetric method, surface plasmon resonance, ion-exchange chromatography, fluorescence, high-performance liquid chromatography, chemiluminescence, electrochemiluminescence, and electrochemical method, have been developed to monitor DA in different media. ,− High signal background (low sensitivity) and bulky instruments are significant challenges in these methods. , Alternatively, increasing efforts have been focused on photoelectrochemical (PEC) assays as an attractive frontier in state-of-the-art analysis because of their advantages, such as low background signals and separation of excitation and detection signals. − PEC sensors are consisting of photoelectrically active support such as functional semiconductors (SCs) and quantum dots, as well as recognition agents such as aptamer, antibodies, protein, and so on. − Considering the inherent disadvantages of antibodies and aptamers such as low stability, high cost, photoelectric inactivity, and complex operation, developing novel recognition agents are very vital. − In addition, the strong oxidizability of OH radicals generated in PEC oxidation causes photocorrosion and severe reduction of selectivity. , Therefore, for designing a robust PEC sensor, the selection of a stable, biocompatible, photoelectrically active, and cost-effective recognition element of high electron mobility, excellent chemical and thermal stability, and photoelectrically active support is of high importance …”

A Sensitive Photoelectrochemical Sensor for Levodopa Detection Using Benzothiadiazole-Based Conjugated Microporous Polymer-Coated Graphene Heterostructures

“…The electrode interface was characterized by electrochemical impedance spectroscopy (EIS) . EIS was evaluated using a 0.1 M KCl solution containing 3 mM [Fe­(CN) 6 ] 3–/4– .…”

“…The electrode interface was characterized by electrochemical impedance spectroscopy (EIS). 52 EIS was evaluated using a 0. 53,54 The R ct of the Bare/ITO electrode was estimated to be 152 Ω, and that of the CMP-rGO/ITO electrode was estimated to be 140 Ω.…”

Highly Sensitive Determination of Antibiotic Residues in Aquatic Products by High-Performance Liquid Chromatography–Tandem Mass Spectrometry

“…A variety of amphenicol detection approaches have been extensively developed by immunosorbent assay [ 11 , 12 ], fluorescence sensors [ 13 , 14 , 15 ], electrochemical sensors [ 16 , 17 , 18 , 19 ], gas chromatography–mass spectrometry (GC/MS) [ 20 , 21 , 22 ], and high-performance liquid chromatography–mass spectrometry (HPLC–MS/MS), etc. [ 23 , 24 , 25 , 26 , 27 , 28 , 29 ].…”