Electrochemical Behavior of a Copper Tungstate-Fabricated Disposable Strip for the Rapid and Real-Time Detection of Uric Acid

Researchers are now aiming to develop multifunctional materials that are nontoxic, minimal in cost, and simple to produce and have superior efficiency for large-scale electrochemical sensor applications. Uric acid (UA) is a biomarker correlated with gout and kidney stones that has an adverse effect on the human body. Here, UA was measured using differential pulse voltammetry (DPV) and amperometric (i-t) techniques with a superactive Wolframite structure of CuWO₄. CuWO₄ was characterized using a variety of microscopic and spectroscopic methods. The data collected indicated that the electrode modified with CuWO₄ provides a superior electrochemical oxidation peak current compared with the bare electrode. CuWO₄ exhibits wide linear ranges, with a lower limit of detection obtained from DPV and i-t techniques. Furthermore, the CuWO₄-modified sensor has been used to determine the concentration of UA in urine and bovine serum albumin samples. Moreover, the CuWO₄-modified sensor has great stability and reproducibility.