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

Clinically oriented Alzheimer's biosensors: expanding the horizons towards point-of-care diagnostics and beyond

“…39,40 Ab is a peptide comprising of approximately 40 amino acids on the basis of sequential cleavages of Ab precursor protein (APP). 29 The origin of neurotoxicity in Ab ( 40) peptides relies on the Ab (residues [16][17][18][19][20][21]) which is the central hydrophobic segment for the amyloid brillization known as the "amyloidogenic domain". [41][42][43] CSF contains different types of Ab plaques, where the major compounds correspond to Ab (40) and Ab (42) isoforms.…”

“…To reach an optimum level of sensor detection, various types of biosensors have been reported, such as electrochemical-, eld-effect transistor-, plasmonic-, immuno-, uorescent-, optical sensors, etc. [15][16][17][18][19] (Table 1). Nevertheless, some critical issues still remain unsolved from the recent ndings.…”

CeO2@NH2 functionalized electrodes for the rapid detection of SARS-CoV-2 spike receptor binding domain

“…[21][22][23] An aptasensor is a biosensor that uses an aptamer as a bioreceptor. [24][25][26] The size of an aptamer is smaller (2-3 nm) than an antibody (12-15 nm), thereby reducing the steric barrier to the surface of the coronavirus, which is about 100 nm. A smaller bioreceptor will enable more molecules to bind to the same surface area.…”

P/N Junction TiO2 Nanotube-Polyaniline Molecular Imprinting Photoelectrochemistry Micro-Sensor with a Self-Elution Function Can Efficiently Detect Chloramphenicol

“…Moreover, photo-electrochemistry (PEC) has attracted people’s attention because the photoelectric materials spontaneously produce current after illumination by light with no extra energy consumed. − Compared to the problems of general elution in MIPs, the PEC technology used in elution can shorten the process and improve the elution efficiency and detection sensitivity. Chemically stable TiO 2 is used as a photoanode because of its ultra-high photocatalytic activity, which is reflected in the most popular properties of p-n heterojunction. , When visible light illuminates the surface of TiO 2 , electrons in the valence band jump and spontaneously form electron–hole pairs. In addition, the photo-induced electrons with strong reducibility migrate to the interior of TiO 2 substrate, but the photo-induced holes with oxidation migrate to the MIP membrane.…”

“…Chemically stable TiO 2 is used as a photoanode because of its ultra-high photocatalytic activity, which is reflected in the most popular properties of p-n heterojunction. 34,35 When visible light illuminates the surface of TiO 2 , electrons in the valence band jump and spontaneously form electron−hole pairs. In addition, the photo-induced electrons with strong reducibility migrate to the interior of TiO 2 substrate, but the photo-induced holes with oxidation migrate to the MIP membrane.…”