A visible light photoelectrochemical sandwich aptasensor for adenosine triphosphate based on MgIn2S4-TiO2 nanoarray heterojunction

Constructing a Novel Surfactant-free MoS2 Nanosheet Modified MgIn2S4 Marigold Microflower: An Efficient Visible-Light Driven 2D-2D p-n Heterojunction Photocatalyst toward HER and pH Regulated NRR

“…Recent years have witnessed an emergent two-dimensional molybdenum disulfide (MoS 2 ), which is considered to be a replacement to Pt-based materials due to its low cost as well as earth abundance nature. − The 2H semiconducting phase of MoS 2 possesses a trilayer sandwich hexagonal symmetry in the S–Mo–S fashion with 2D honeycomb structure in which one layer of Mo is stacking in between two layers of S atoms. , Going through the theoretical as well as experimental observations, it is confirmed that hexagonal MoS 2 has a great activity toward photocatalytic NRR and H 2 evolution reaction due to the presence of large edge to volume ratio. ,,,, However, the photocatalytic performance with single trigonal prismatic MoS 2 with Mo edge is still a great challenge owing to their limited conductivity within the layers, poor intrinsic activity and low charge carrier density. , To settle these problems many significance strategies have been made for utilizing single MoS 2 in the area of photocatalysis field by activating the basal plane S through phase transition as well as morphological variation, introducing more edge active sites through thin sheet preparation and compounding with other semiconducting materials. , More importantly going through the literature, compounding 2D-2D materials greatly promotes the photocatalytic activity because of their excellent catalytic dispersion nature. 2D-2D nanocomposites also provide stronger interfacial interaction as well as shortening the diffusion distance of photogenerated electron hole units. − With the going industry, the investigation over the development of other active 2D materials, our main focus went on the ternary metal chalcogenides semiconductors with the general chemical formula A II B 2 III X 4 VI termed as thiospinel type materials proves to be a potential applicant in photocatalytic fields because of the presence of high-surface-energy quarter spherical defects and cationic holes in its crystal structure. , Among them magnesium based chalcogenides i.e. MgIn 2 S 4 (MIS) with chalcogen group S or Se, crystallize in cubic phase spinel, and the structure is consisting of both octahedron as well as tetrahedron in which Mg and In are positioned at the center of tetrahedron and octahedron, respectively .…”

“…25−27 With the going industry, the investigation over the development of other active 2D materials, our main focus went on the ternary metal chalcogenides semiconductors with the general chemical formula A II B 2 III X 4 VI termed as thiospinel type materials proves to be a potential applicant in photocatalytic fields because of the presence of high-surface-energy quarter spherical defects and cationic holes in its crystal structure. 28,29 Among them magnesium based chalcogenides i.e. MgIn 2 S 4 (MIS) with chalcogen group S or Se, crystallize in cubic phase spinel, and the structure is consisting of both octahedron as well as tetrahedron in which Mg and In are positioned at the center of tetrahedron and octahedron, respectively.…”

Surface Plasmon-Enhanced Photoelectrochemical Sensor Based on Au Modified TiO2 Nanotubes

“…It is widely used in photocatalysis [13], solar cells [14], and PEC sensors [15], etc. The nanomorphology of TiO 2 includes nanosheet [16], nanocrystal [17], nanoarray [18], nanoparticle [19], nanorod [20], nanowire [21], nanoneedle [22,23], nanoflower [24], nanocube [25], and monocrystal forms [26,27]. Due to the difference in morphology, the materials show different physical and chemical properties, and their applications in bioanalytical sensing are also commonly reported [28].…”

Dual-Mode Aptasensor Assembled by a WO3/Fe2O3 Heterojunction for Paper-Based Colorimetric Prediction/Photoelectrochemical Multicomponent Analysis

“…MicroRNA 21 (miRNA-21), a small regulatory molecule with the function to modulate the activity of specific miRNA, plays an important role in cellular proliferation, differentiation, and apoptosis. They are commonly overexpressed on the majority of human epithelia of different origins, which make serum assays for them potentially useful in tumor detection. − Up to now, a variety of bioanalytical techniques have aroused wide interest including electrochemiluminescent, − high-performance liquid chromatography, , electrochemical method, and so on. − Compared with methods that necessitate the use of photomultiplier and various coreactants, the photoelectrochemical (PEC) technique involves simpler instruments and more straightforward detection mechanisms. − For example, Ju’s group designed the MgIn 2 S 4 –TiO 2 nanoarray heterojunction as a substrate material through a hydrothermal method to realize the detection of adenosine triphosphate . Tang et al reported an amplification technique by introducing the palindromic molecular beacon-based target recycling to obtain a strong photocurrent for kanamycin analysis .…”

“…15−17 For example, Ju's group designed the MgIn 2 S 4 −TiO 2 nanoarray heterojunction as a substrate material through a hydrothermal method to realize the detection of adenosine triphosphate. 18 Tang et al reported an amplification technique by introducing the palindromic molecular beacon-based target recycling to obtain a strong photocurrent for kanamycin analysis. 19 To the best of our knowledge, regrettably, few reports have focused on multianalyte assay for the fabrication of PEC-sensing platform.…”