Cobalt sulfides/carbon nanohybrids: a novel biocatalyst for nonenzymatic glucose biofuel cells and biosensors

Li, Gangyong; Wu, Zhongdong; Jiao, Shuqiang; Hu, Zongqian

doi:10.1039/c9ra06766c

Cited by 7 publications

(1 citation statement)

References 43 publications

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“…This process effectively augments the surface area and conductivity of the electrodes while optimizing the enzyme loading. 2D transition metal chalcogenides, including copper sulfide, Co 3 S 4 , tungsten sulfide, and molybdenum sulfide, have garnered considerable interest due to their numerous benefits for basic and technological study in several disciplines, such as energy storage, sensing, and catalysis [ 21 , 22 ]. They consist of alternating layers of metal and S that are held together by weak van der Waals' forces.…”

Section: Discussionmentioning

confidence: 99%

Synthesis and Application of Titanium Carbide (Ti3C2)-Cobalt Sulfide (Co3S4) Nanocomposites in Amino Acid Biosensing

C P,

I G K

et al. 2024

Cureus

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Background The fabrication of titanium carbide (Ti 3 C 2 )-cobalt sulfide (Co 3 S 4 )-based biosensors with high sensitivity and selectivity can change the biosensor manufacturing industry completely. Molecular and clinical diagnostics, disease progression monitoring, and drug discovery could utilize these sensors for early biomarker detection. MXene (Ti 3 C 2 ) is a two-dimensional material with exceptional electrical conductivity, hydrophilicity, great thermal stability, large interlayer spacing, and a high surface area. Ti 3 C 2 's remarkable characteristics make it well-suited for biomolecule immobilization and target analyte detection. Co 3 S 4 is a transition metal chalcogenide that has shown great potential in biosensors. Co 3 S 4 nanoparticles (NPs) can potentially enhance Ti 3 C 2 electrocatalytic activity, particularly in amino acid detection. L-arginine is a semi-essential amino acid, and the body frequently uses it to support healthy circulation and plays a crucial role in protein synthesis. We fabricated the Ti 3 C 2 -Co 3 S 4 biosensor for L-arginine detection. Aim This study aims to synthesize and apply Ti 3 C 2 -Co 3 S 4 nanocomposites in amino acid biosensing. Materials and methods The Ti 3 C 2 nanosheets were synthesized by the selective removal of an aluminum (Al) layer from the precursor (Ti 3 AlC 2 ) using hydrofluoric acid (HF). The resulting mixture serves as an etchant, especially targeting the Al layers on Ti 3 AlC 2 while protecting the desired MXene layers at room temperature. Cobalt nitrate hexahydrate was dissolved in deionized water. Sodium hydroxide was added to the cobalt solution and stirred. Thioacetamide was added to the above solution and stirred (Solution B). A mixture of Solution A and Solution B was stirred for 30 minutes. The mixture is transferred to a hydrothermal reactor and maintained at a temperature of 180°C for 12 hours. Once the reaction completes, we cool the resultant mixture to room temperature and then filter it using the washing technique. The sample underwent a 12-hour drying process at 80°C. Results This study investigated the use of a biosensor that employed Ti 3 C 2 -Co 3 S 4 NPs to detect the concentration of L-arginine. The X-ray diffraction (XRD) show...

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Section: Discussionmentioning

confidence: 99%