Cu-nanoflower decorated gold nanoparticles-graphene oxide nanofiber as electrochemical biosensor for glucose detection.

Three-dimensional Cu@Cu2O aerogels with excellent electrocatalytic activity were prepared and used as electrode matrix for constructing novel electrochemical glucose sensors. The aerogels were obtained by adding a fresh solution of NaBH4 into a mixture of CuCl2 and NaOH aqueous solutions under stirring at room temperature. The aerogels were assembled with Cu or Cu2O nanoparticles. The materials show superfine spongy-like structures with large surface-to-volume ratio, numerous active sites and good solubility. The Cu@Cu2O aerogels show highly efficient electrochemical activity toward glucose oxidation with a relatively low-onset potential (0.25 V) in 0.1 M NaOH solution. This non-enzymatic glucose sensor offers a low detection limit of 0.6 μM (S/N = 3), a high sensitivity (195 mA M−1 cm−2), and two wide linear ranges (0.001–5.2 mM, 5.2–17.1 mM) at a working voltage of 0.6 V (vs. Ag/AgCl) in alkaline solution. While in neutral pH values, the respective data are a linear analytical range from 0.1 to 10 mM; a detection limit of 54 μM (S/N = 3) and a sensitivity of 12 mA M−1 cm−2 at scan rate of 100 mV s−1. The sensor possesses high selectivity, good reproducibility and long-time stability. It was utilized to determine glucose levels in (spiked) human serum samples, and satisfactory results were obtained.

Three-dimensional porous Cu@Cu 2 O aerogels for direct voltammetric sensing of glucose

https://iopscience.iop.org/article/10.1149/1945-7111/ab64c0/pdf

Review—Recent Advances in the Development of Nanoporous Au for Sensing Applications

/pdf/progress-of-enzymatic-and-non-enzymatic-electrochemical-316ex7o9.pdf

Progress of Enzymatic and Non-Enzymatic Electrochemical Glucose Biosensor Based on Nanomaterial-Modified Electrode

Ultrafast one-pot anodic preparation of Co3O4/nanoporous gold composite electrode as an efficient nonenzymatic amperometric sensor for glucose and hydrogen peroxide

Ultra-rapid fabrication of highly surface-roughened nanoporous gold film from AuSn alloy with improved performance for nonenzymatic glucose sensing.

One-step rapid electrochemical fabrication of self-supported Ni(OH)2/nanoporous gold hybrid electrode for nonenzymatic glucose detection

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Ultra-rapid fabrication of highly surface-roughened nanoporous gold film from AuSn alloy with improved performance for nonenzymatic glucose sensing.

One-step rapid electrochemical fabrication of self-supported Ni(OH)2/nanoporous gold hybrid electrode for nonenzymatic glucose detection