A photoelectrochemical aptasensor constructed with core-shell CuS-TiO2 heterostructure for detection of microcystin-LR

A photo-electrochemical aptasensor for the determination of severe acute respiratory syndrome coronavirus 2 receptor-binding domain by using graphitic carbon nitride-cadmium sulfide quantum dots nanocomposite

“…Then, 6 μL of 2.5% glutaraldehyde solution was cast on the surface of the Chitosan/CdS QDs-gC 3 N 4 /ITO electrode to attach to the amine groups of chitosan for 45 min. Glutaraldehyde acted as a cross-linker to attach amino-terminal aptamer probes to amine groups of chitosan via shift base interaction between the aldehyde groups of glutaraldehyde and amine groups [ 32 ]. The surface coverage of the aptamer (Г aptamer ) was founded to be 26.2 pmol.cm -2 or 1.58 × 10 13 molecules.…”

“…Photo-electrochemical (PEC) based-aptasensor is one of the highly sensitive electrochemical biosensors that can be used for the determination of biomarkers. In addition to the previously ennumerated advantages of aptasensors, the PEC-based aptasensors have several additional advantages such as low background noise, low cost, simple operation, fast response, wide dynamic response range, and good stability, making them good candidates to fabricate the point of care biosensors [ 21 , 22 ].…”

Aptamers and Aptasensors for Highly Specific Recognition and Sensitive Detection of Marine Biotoxins: Recent Advances and Perspectives

“…In 2018, a photoelectrochemical (PEC) aptasensor was developed by Tang et al [ 85 ] for the detection of MC-LR using the aptamer AN6. As shown in Figure 8 , a CuS-TiO 2 heterojunction composite was prepared by dispersedly depositing CuS nanoparticles on TiO 2 nanospheres surface with a hydrothermal method, which greatly alleviated the self-aggregation of CuS.…”

“… Scheme of a photoelectrochemical aptasensor for detection of microcystin-LR (MC-LR) (Scheme was drawn according to the text description and the original Scheme 1 of Ref. [ 85 ]). …”

The design and growth of peanut-like CuS/BiVO4 composites for photoelectrochemical sensing

“…[27][28][29] Copper sulde (CuS), a promising p-type semiconductor, can absorb and utilize ultraviolet (UV) and visible light due to its small band gap (2.1 eV). 30,31 The heterojunction formed between a p-type and an n-type semiconductor is capable of enhancing the ability to absorb visible light as well as facilitating the separation process of charge carriers. 32,33 As such, we designed a complex of BiVO 4 and CuS to improve the PEC performance.…”