NonEnzymatic Amperometric Glucose Sensor Based on Carbon Nanodots and Copper Oxide Nanocomposites Electrode In this research work, a nonenzymatic amperometric sensor for the determination of glucose was designed based on carbon nanodots (Cdots) and copper oxide (CuO) nanocomposites (CuOCdots). The CuOCdots nanocomposites were modified on the surface of a screenprinted carbon electrode (SPCE) to increase the sensitivity and selectivity of the glucose sensor. The assynthesized materials were further analyzed for physicochemical properties through characterization tools such as transmission electron microscopy (TEM) and Fouriertransform infrared spectroscopy (FTIR); and their electrochemical performance was also studied. The SPCE modified with CuOCdots possess desirable electrocatalytic properties for glucose oxidation in alkaline solutions. Moreover, the proposed sensing platform exhibited a linear range of 0.5 to 2 and 2 to 5 mM for glucose detection with high sensitivity (110 and 63.3 xc2xb5A mMxe2x88x921cmxe2x88x922), and good selectivity and stability; and could potentially serve as an effective alternative method of glucose detection.

3D Hydrogen Titanate Nanotubes on Ti Foil: A Carrier for Enzymatic Glucose Biosensor Glucose oxidase (GOx) based biosensors are commercialized and marketed for the high selectivity of GOx. Incorporation nanomaterials with GOx can increase the sensitivity performance. In this work, an enzyme glucose biosensor based on nanotubes was fabricated. By using Ti foil as a carrier, hydrogen titanate nanotubes (HTNTs), which present fine 3D structure with vast pores, were fabricated insitu by the hydrothermal treatment. The multilayer nanotubes are openended with a diameter of 10 nm. Then glucose oxidase (GOx) was loaded on the nanotubes by crosslinking to form an electrode of the amperometric glucose biosensor (GOxHTNTsTi electrode). The fabricated GOxHTNTsTi electrode had a linear response to 1xe2x80x9310 mM glucose, and the response time was 1.5 s. The sensitivity of the biosensor was 1.541 xcexbcAxc2xb7mM1xc2xb7cm2, and the detection limit (SN  3) was 59 xcexbcM. Obtained results indicate that the insitu fabrication and unique 3D structure of GOxHTNTsTi electrode are beneficial for its sensitivity.