Nanosheets-assembled hollow CdIn2S4 microspheres-based photoelectrochemical and fluorescent dual-mode aptasensor for highly sensitive assay of 17β-estradiol based on magnetic separation and enzyme catalytic amplification

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

“…Figure A displays the full-scan XPS spectrum, in which the peaks of Au, Cd, and S elements show up, demonstrating the formation of the Au NPs/CdS NS. As presented in Figure B, the high-resolution Cd 3d XPS section can be deconvoluted into two peaks at 412.1 and 405.4 eV, attributing to Cd 3d 5/2 and Cd 3d 3/2 of Cd 2+ species in CdS, respectively . The two separate peaks at 161.4 and 162.4 eV in the S 2p XPS part (Figure C) correlate to the doublet of S 2p 3/2 and S 2p 1/2 , respectively, which indicate the main existence of S 2– species .…”

“…As presented in Figure 3B, the highresolution Cd 3d XPS section can be deconvoluted into two peaks at 412.1 and 405.4 eV, attributing to Cd 3d 5/2 and Cd 3d 3/2 of Cd 2+ species in CdS, respectively. 29 The two separate peaks at 161.4 and 162.4 eV in the S 2p XPS part (Figure 3C) correlate to the doublet of S 2p 3/2 and S 2p 1/2 , respectively, which indicate the main existence of S 2− species. 25 As for the deconvoluted Au 4d XPS section (Figure 3D), two peaks centered at 83.9 and 87.6 eV are allocated to Au 4f 5/2 and Au 4f 7/2 , respectively, indicating the formation of metallic Au.…”

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

“…Typically, CdIn 2 S 4 /In 2 S 3 was synthesized under hydrothermal treatment according to previous research with minor modifications . In brief, CdIn 2 S 4 was initially prepared by dissolving 39 mg of CdCl 2 , 94 mg of InCl 3 , and 66 mg of thioacetamide (TAA) into 20 mL of water under stirring.…”

“…In recent years, ternary metal sulfides (e.g., CdIn 2 S 4 , ZnIn 2 S 4 , CuIn 2 S 4 , and FeIn 2 S 4 ) have received widespread interest for PEC systems, due to their appealing PEC properties . Among them, CdIn 2 S 4 stands out for its suitable band gap, excellent structural constancy and wide visible light responses …”

Stimulus-Responsive Metal–Organic Framework Signal-Reporting System for Photoelectrochemical and Fluorescent Dual-Mode Detection of ATP

“…Compared with single-mode PEC bioanalysis, PEC-involved dual-mode bioanalysis permits cross-checking within two signals and has drawn increasing interest among the community. , Owing to the separate signaling with different mechanisms, the two signals in dual-mode detection are independent and could be mutually corroborated, which effectively improves the reliability of the analysis. In view of the advantages of dual-mode detection, a variety of PEC-involved dual-mode biosensors have been constructed, such as PEC–electrochemistry, PEC–colorimetric, and PEC–FL. − Despite the superiority of these studies, the PEC-involved dual-mode bioanalysis is still in its infancy due to its short development time. The difficulty of achieving such dual-mode detections lies in the design of appropriate signal reporting systems with dual transduction routes.…”