Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia.
Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia.
Chemosphere. 2023 Sep;334:139014. doi: 10.1016/j.chemosphere.2023.139014. Epub 2023 May 22.
A co-precipitation technique has been used to prepare Bismuth tungstate nanoparticles (BiWO) for electrochemical capacitors and electrochemical sensing of Ascorbic acid (AA). Using a scanning rate of 10 mV s , the electrode was performed as the pseudocapacitance behavior and the specific capacitance to be up to 677 Fg at 1 A/g. BiWO versus Glassy carbon electrode (GCE) was also used to study the behavior of the BiWO modified electrodes in detecting ascorbic acid. This electrochemical sensor shows excellent electrocatalytic performance when ascorbic acid is present, as determined by differential pulse voltammetry. In solution, ascorbic acid diffuses to an electrode surface and controls its surface properties. Based on the results from the investigation, the sensor showed a detection sensitivity of 0.26 mM/mA, and a limit of detection (LOD) of 77.85 mM. It is clear from these results that BiWO may find application as an electrode material for supercapacitors and glucose sensors.
采用共沉淀法制备了用于电化学电容器和电化学检测抗坏血酸（AA）的钨酸铋纳米粒子（BiWO）。在 10 mV s 的扫描速率下，电极表现出赝电容行为，比电容高达 1 A/g 时的 677 F g 。还使用 BiWO 与玻碳电极（GCE）研究了 BiWO 修饰电极在检测抗坏血酸时的行为。通过差分脉冲伏安法确定，当存在抗坏血酸时，这种电化学传感器显示出优异的电催化性能。在溶液中，抗坏血酸扩散到电极表面并控制其表面性质。根据研究结果，传感器显示出 0.26 mM/mA 的检测灵敏度和 77.85 mM 的检测限（LOD）。从这些结果可以清楚地看出，BiWO 可用作超级电容器和葡萄糖传感器的电极材料。
