Ultrasensitive photoelectrochemical aptasensor for detecting telomerase activity based on Ag2S/Ag decorated ZnIn2S4/C3N4 3D/2D Z-scheme heterostructures and amplified by Au/Cu2+-boron-nitride nanozyme

Novel Ultrasensitive Photoelectrochemical Cytosensor Based on Hollow CdIn2S4/In2S3 Heterostructured Microspheres for HepG2 Cells Detection and Inhibitor Screening

“…The high-resolution Cd 3d segment (Figure B) displays two characteristic peaks centered at 405.2 and 411.9 eV, which are attributed to the binding energies of Cd 3d 5/2 and Cd 3d 3/2 , respectively, demonstrating the existence of Cd 2+ species. As for the deconvoluted In 3d section (Figure C), the fitted peaks at 444.9 and 452.4 eV are allocated to In 3d 5/2 and In 3d 3/2 , respectively, indicating the main existence of In 3+ species . Similarly, the two obvious peaks at 161.5 and 162.7 eV in the S 2p part (Figure D) correspond to S 2p 3/2 and S 2p 1/2 from S 2– species, respectively.…”

“…As for the deconvoluted In 3d section (Figure 3C), the fitted peaks at 444.9 and 452.4 eV are allocated to In 3d 5/2 and In 3d 3/2 , respectively, indicating the main existence of In 3+ species. 31 Similarly, the two obvious peaks at 161.5 and 162.7 eV in the S 2p part (Figure 3D) correspond to S 2p 3/2 and S 2p 1/2 from S 2− species, 32 respectively.…”

Dual-Mode Photoelectrochemical and Electrochemical Immunosensors for Human Epididymis Protein 4 Based on SPR-Promoted Au Nanoparticle/CdS Nanosheet Heterostructures

“…The Schottky barrier can prevent electron transfer from the CB of the CdS NS to Au NPs, leading to the efficient separation of hot electrons in the Au NPs . Strikingly, AA in the aqueous system acts as an electron donor to provide rich electrons to continuously neutralize the holes in the valence band (VB), thereby effectively separating the photogenerated electron–hole pairs during the charge transformation process, harvesting a satisfactory PEC signal . However, once the nonconductive HE4 is immobilized on the electrode, the process of AA consuming holes is prevented by the increased steric hindrance, which leads to significant attenuation of the photocurrent.…”

Sensitive bioanalytical methods for telomerase activity detection: a cancer biomarker

“…And it is very interesting to examine one of the most recent studies in this regard. In this article, Ag 2 S/Ag decorated ZnIn 2 S 4 /C 3 N 4 3D/2D heterostructures could improve bioanalytical sensitivity for fabrication of specific electrochemical tools 56 (Fig. 2).…”