Application of ZnO/graphene and S6 aptamers for sensitive photoelectrochemical detection of SK-BR-3 breast cancer cells based on a disposable indium tin oxide device

Optical biosensors based on ZnO nanostructures: advantages and perspectives. A review

“…This recent reports have proved the concept of good charge transfer and good biomolecule binding through π-π interaction in ZnO/graphene nanocomposites [55,92,94]. Despite that only electrochemical biosensors have been developed at the moment, [55,92,94] new published works on ZnO/graphene optical biosensors are foreseen.…”

“…Nowadays, the most developed and used biosensor platforms are electrical [29,32,33,37,42,46,47,56,87] and electrochemical [16,30,31,38,39,55,88,90,[92][93][94]. Electrical in particular are based on their Field Effect Transistor (FET) platforms demonstrate high level of detection but require additional input of lithography and nanotechnology, what makes these devices more complex and expensive.…”

“…Regarding to a progress in nanotechnology and material science, new technological methods have been developed to fabricate nanostructured ZnO templates with high surface area and advanced properties for biosensors. Nanostructured ZnO films have been widely used as template in electrochemical biosensors before demonstrating good sensitivity and low detection limit [30,39,55,88,90,[92][93][94], while ZnO nanowires, nanorods etc. have been widely used recently as the sensing element in FET biosensors [29,33,87].…”

Photoelectrochemical aptasensing

“…[52,53]. Some other groups then used ZnO/graphene [61], CdS/graphene [71], TiO 2 /graphene [79], SnO 2 /RGO [64], CdS QDs/RGO [57] for novel PEC aptasensing. Especially, the uses of g-C 3 N 4 /GO and BiOI/graphene have also been reported by Zhang et.…”

A photoelectrochemical biosensor for determination of DNA based on flower rod-like zinc oxide heterostructures

“…Currently, several related researches are focused on enhancing the ability of PEC biosensor [16] by associating multifunctional nanometer materials [17], such as ZnO [18,19], TiO 2 [2,20], SnO 2 [21]. ZnO, a wide band gap of 3.37 eV semiconductor with large excitation binding energy of 60 meV at room temperature, has been widely investigated due to its potential wide-ranging applications [22][23][24], such as photocatalyst, solar cell, PEC sensor, nanogenerater ect.…”