Photocatalytic and electrochemical sensor detection of ascorbic and uric acid using novel plant extract green synthesis of CaO nanoparticles

Sensors International Pub Date : 2024-11-12 DOI:10.1016/j.sintl.2024.100308

M.N. Somashekar , M. Dhanalakshmi , T.S. Nagamani , T. Subhas Chandra , T.M. Sharanakumar , C.R. Ravikumar

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Abstract

In the present work, a novel fuel made from the leaves of the Gotu kola (Centella Asiatica) plant is used to produce calcium oxide nanoparticles (CaO NPs) in an eco-friendly manner. The results of the PXRD experiments, the average crystallite size for CaO NPs is 38 nm, which is consistent with the findings of the TEM. As per DRS investigation, the energy gap of CaONPs is 3.253 eV. Fast Blue (FB) and Fast Orange (FO) dye photodegradation was effectively enhanced by the plant-mediated CaO NPs under UV-light irradiation, showing high efficiency within 120 min. The CaO demonstrated remarkable photodegradation process against the FO and FB dyes under UV light, with rates of 79.52 % and 61.43 % after 120 min. CaO NPs' electrochemical characteristics were ascertained using a carbon paste electrode (CPE) dipped in a 0.1N HCl solution. In cyclic voltammetry evaluation, the green CaO NPs showed greater sensitivity at various scan rates. Ascorbic acid and uric acid were finally shown to have exceptional redox reaction and ascorbic acid and uric acid detection capabilities when they were used as analytes.

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利用新型植物提取物绿色合成氧化钙纳米粒子，实现抗坏血酸和尿酸的光催化和电化学传感器检测

本研究利用积雪草叶制成的新型燃料，以环保的方式生产氧化钙纳米粒子（CaO NPs）。PXRD 实验结果表明，CaO NPs 的平均结晶尺寸为 38 nm，这与 TEM 的结果一致。根据 DRS 调查，CaONPs 的能隙为 3.253 eV。在紫外光照射下，植物介导的 CaO NPs 有效地增强了快蓝（FB）和快橙（FO）染料的光降解，在 120 分钟内显示出很高的效率。在紫外光下，CaO 对 FO 和 FB 染料的光降解效果显著，120 分钟后的降解率分别为 79.52% 和 61.43%。使用浸在 0.1N HCl 溶液中的碳浆电极（CPE）确定了 CaO NPs 的电化学特性。在循环伏安法评估中，绿色 CaO NPs 在各种扫描速率下都表现出更高的灵敏度。抗坏血酸和尿酸最终被证明具有优异的氧化还原反应以及抗坏血酸和尿酸检测能力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Sensors International

CiteScore

17.40

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0.00%

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