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

被引：0
作者：
Somashekar, M.N. [1 ]
Dhanalakshmi, M. [2 ]
Nagamani, T.S. [3 ]
Subhas Chandra, T. [4 ]
Sharanakumar, T.M. [5 ]
Ravikumar, C.R. [6 ]
机构：
[1] Department of Chemistry, Shri Prabhu Arts, Science and J M Bohra Commerce Degree College, Yadgiri District, Karnataka, Shorapur
[2] Department of Physics, Nrupathunga University (Formerly Known As Government Science College), Karnataka, Bangalore
[3] Depatment of Biotechnology, Nrupathunga University (Government Science College), Bengaluru
[4] Department of Science, APS Polytechnic, Bangalore
[5] Department of Chemistry, Ballari Institute of Technology and Management, Karnataka, Bellary
[6] Department of Chemistry, East West Institute of Technology, Bengaluru
来源：
Sensors International | 2025年 / 6卷
关键词：
Ascorbic acid; CaO NPs; Electrochemical sensors; Gotu kola (centella asiatica); Photocatalytic activity; Uric acid;
D O I：
10.1016/j.sintl.2024.100308
中图分类号：
学科分类号：
摘要：
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. © 2024 The Authors
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