A hybrid of NiCo-PBNCs nano-composite supported two-dimensional molybdenum disulfide as excellent peroxidase mimics for colorimetric glucose detection

• Published in: Journal of dispersion science and technology Vol. 45; no. 2; pp. 368 - 379
• Main Authors: Sathish, A., Krishnaveni, R.
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis 31.01.2024; Taylor & Francis Ltd
• Subjects: Catalytic activity; colorimetric sensing; Colorimetry; Electron conductivity; Gluconic acid; Glucose; Glucose oxidase; Hydrogen peroxide; Intermetallic compounds; Molybdenum; Molybdenum disulfide; MoS; Nanocomposites; Nanomaterials; Oxidation; Peroxidase; Peroxidase mimetics; Pigments; Prussian blue nanocubes; Structural stability; Surface stability; Synergistic effect
• ISSN: 0193-2691; 1532-2351
• DOI: 10.1080/01932691.2022.2159834

The anchoring of two-dimensional nanosheets (2D) with Prussian blue nanocubes has exhibited the advantage of high electron conductivity and better catalytic application. Herein, we reported the successful fabrication of molybdenum disulfide-supported Prussian blue nanocubes (MoS 2 @NiCo-PBANCs) and compared the bare MoS 2 and NiCo-PBNCs for effective peroxidase, such as catalytic activity, which can catalyze the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) by the generation of H 2 O 2 , ensuring the appearance of blue colored solution. The MoS 2 @NiCo-PBANCs exhibited an excellent colorimetric sensing performance toward glucose in urine samples. Therefore, the present method demonstrates the high sensitivity, selectivity, simplicity, and fast colorimetric sensing ability for H 2 O 2 and glucose detection. The synergistic effect of MoS 2 @NiCo-PBNCs reveals lower detection limits of 0.0075 µM and 0.01 µM for H 2 O 2 and glucose, respectively. The exclusive structural morphology, excellent stability, large surface area, and high catalytic property have been utilized to achieve the closer interaction of glucose oxidase and TMB with MoS 2 @NiCo-PBANCs to oxidize glucose to gluconic acid. Overall, we utilized the MoS 2 @NiCo-PBNCs as a novel composite nanomaterial for the application of H 2 O 2 and glucose peroxidase-like mimics in the urine sample.