Lizz Gabi Luza Mamani, Gabriel Erig Domingos, Sabrina Nicolodi, Eliana Weber de Menezes, Silvio Buchner, Edilson Valmir Benvenutti, Tania Maria Haas Costa, Leliz Ticona Arenas
{"title":"Synthesis and characterization of porous β-cyclodextrin/manganese ferrite nanoparticles and their application as an electrochemical sensor of dopamine","authors":"Lizz Gabi Luza Mamani, Gabriel Erig Domingos, Sabrina Nicolodi, Eliana Weber de Menezes, Silvio Buchner, Edilson Valmir Benvenutti, Tania Maria Haas Costa, Leliz Ticona Arenas","doi":"10.1007/s10008-024-06105-z","DOIUrl":null,"url":null,"abstract":"<div><p>Superparamagnetic manganese ferrite nanoparticles stabilized with β-cyclodextrin (βCD-MFO) were prepared by co-precipitation at room temperature and hydrothermal methods using temperatures of 120 and 140 °C. Similar samples, without βCD, were prepared for comparison (MFO). Samples called βCD-MFO140 and MFO140, heated at 140 °C during the synthesis, showed the best characteristics. The βCD-MFO140 is formed by nanoparticles of 5 nm and it presents the highest surface area, the highest porosity, and a hydrophilic surface. Alternatively, the MFO140 presented a crystallite size near 25 nm and a hydrophobic surface. Both nanocomposites were applied to modify carbon paste electrodes and evaluated using differential pulse voltammetry for the determination of dopamine. They showed promising responses such as sensitivities of 0.09 and 0.23 µA µmol<sup>−1</sup> L and low detection limit of 2.28 and 0.39 µmol L<sup>−1</sup> for MFO140 and βCD-MFO140, respectively, in a linear range between 11.97 and 39.68 µmol L<sup>−1</sup> for MFO140 and between 3.99 and 15.95 µmol L<sup>−1</sup> for βCD-MFO140. Both sensors demonstrated good reproducibility with a relative standard deviation of 12.7%. The CPE βCD-MFO140 exhibits better selectivity for dopamine. According to these results, the βCD-MFO140 electrode demonstrated better electrochemical performance with potential for application in real samples, which can be ascribed to its higher surface area and porosity, as well as its hydroxylated surface that makes this electrode more hydrophilic.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1623 - 1638"},"PeriodicalIF":2.6000,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Solid State Electrochemistry","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10008-024-06105-z","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
引用次数: 0
Abstract
Superparamagnetic manganese ferrite nanoparticles stabilized with β-cyclodextrin (βCD-MFO) were prepared by co-precipitation at room temperature and hydrothermal methods using temperatures of 120 and 140 °C. Similar samples, without βCD, were prepared for comparison (MFO). Samples called βCD-MFO140 and MFO140, heated at 140 °C during the synthesis, showed the best characteristics. The βCD-MFO140 is formed by nanoparticles of 5 nm and it presents the highest surface area, the highest porosity, and a hydrophilic surface. Alternatively, the MFO140 presented a crystallite size near 25 nm and a hydrophobic surface. Both nanocomposites were applied to modify carbon paste electrodes and evaluated using differential pulse voltammetry for the determination of dopamine. They showed promising responses such as sensitivities of 0.09 and 0.23 µA µmol−1 L and low detection limit of 2.28 and 0.39 µmol L−1 for MFO140 and βCD-MFO140, respectively, in a linear range between 11.97 and 39.68 µmol L−1 for MFO140 and between 3.99 and 15.95 µmol L−1 for βCD-MFO140. Both sensors demonstrated good reproducibility with a relative standard deviation of 12.7%. The CPE βCD-MFO140 exhibits better selectivity for dopamine. According to these results, the βCD-MFO140 electrode demonstrated better electrochemical performance with potential for application in real samples, which can be ascribed to its higher surface area and porosity, as well as its hydroxylated surface that makes this electrode more hydrophilic.
期刊介绍：
The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry.
The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces.
The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis.
The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.
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