Non-Enzymatic Electrochemical Glucose Sensing Techniques

Non-enzymatic electrochemical glucose sensing exploits direct electrocatalytic oxidation of glucose at the surface of engineered electrodes, obviating the need for biological recognition elements. This approach addresses limitations of enzymatic sensors, such as enzyme instability, limited operational lifetime and sensitivity to environmental conditions. Central to non-enzymatic strategies is the design of electrode materials with high conductivity, abundant catalytic sites and robust chemical stability. Metal–organic frameworks (MOFs), transition-metal oxides, single-metal and bimetallic nanoparticles, as well as composites with carbonaceous supports, have emerged as leading candidates. These materials enhance electron transfer kinetics and provide large surface areas to facilitate rapid, selective glucose oxidation in alkaline or physiological media. Key performance metrics include sensitivity (current change per concentration unit), linear detection range, response time and limit of detection (LOD). Advances in nanostructuring—such as two-dimensional lamellar architectures, room-temperature synthesis routes and flexible substrate integration—have driven the field towards real-time, continuous monitoring of glucose in bodily fluids. The global significance is underscored by the rising prevalence of diabetes and the demand for low-cost, portable, point-of-care diagnostics. Interdisciplinary efforts now focus on miniaturisation, multi-analyte capability and wearable formats to enable personalised healthcare management.

Research from Nature Portfolio

No recent Nature Portfolio content available.

Non-Enzymatic Electrochemical Glucose Sensing Techniques publication trend

The graph below shows the total number of articles in non-enzymatic electrochemical glucose sensing techniques across all publications each year (not limited to Nature Index journals).

Technical terms

Metal–organic framework (MOF): A porous crystalline material composed of metal ions or clusters coordinated to organic ligands, offering high surface area and tunable active sites.

Amperometric response: The electrical current change measured at a fixed potential in response to analyte concentration, used to quantify glucose levels.

Sensitivity: The slope of the calibration curve, indicating the change in current per unit concentration of glucose.

Limit of detection (LOD): The lowest concentration of glucose that can be reliably distinguished from the background noise, typically defined at a signal-to-noise ratio of three.

Screen-printed carbon electrode (SPCE): A low-cost, mass-producible electrode platform where conductive carbon ink is printed onto a substrate for electrochemical measurements.

References

1. Pyridine‐Regulated Lamellar Nickel‐Based Metal–Organic Framework (Ni‐MOF) for Nonenzymatic Electrochemical Glucose Sensor. Advanced Science (2023).
2. Non-enzymatic amperometric glucose sensing by novel Cu-MOF synthesized at room temperature. Materials Advances (2024).
3. 3D-printed electrochemical glucose device with integrated Fe(II)-MOF nanozyme. Microchimica Acta (2023).