{"title":"设计低电压 TCNQ-Pd-Co@NC 改性电极式 NADH 传感器","authors":"Kuldeep Kumar Maurya, Kulveer Singh, Chitra Singh, Manisha Malviya","doi":"10.1007/s12678-024-00865-y","DOIUrl":null,"url":null,"abstract":"<p>The present work involves the design and validation of an electrochemical sensor for precise and selective sensing of nicotinamide adenine dinucleotide (NADH). The designed electrochemical sensor consists of TCNQ and Pd-Co@NC nanocomposite–modified electrodes (TCNQ-Pd-Co@NC/CPE). The designed electrode was validated by cyclic voltammetry, amperometry, and electrochemical impedance spectroscopy (EIS). The results revealed potent electrocatalytic activity towards NADH oxidation and sensing. Cyclic voltammetry revealed the superior capability of TCNQ-Pd-Co@NC-based carbon paste electrode in electron transfer than TCNQ-Co@NC/CPE and TCNQ/CPE, validating better conductivity of TCNQ-Pd-Co@NC/CPE for NADH sensing. Amperometry study provided a wide linear range of 10 to 250 µM for NADH detection with a low detection limit (LOD) of 5.17 µM and a sensitivity of 21.5 µA mM. EIS study revealed the lowest <i>R</i><sub>ct</sub> value of 12.5 × 10<sup>2</sup> for TCNQ-Pd-Co@NC/CPE compared to TCNQ-Co@NC/CPE and TCNQ/CPE, demonstrating high electron transfer capability and thus sensitivity towards NADH. Besides this, the modified TCNQ-Pd-Co@NC-based carbon paste electrodes offered exceptional selectivity, reproducibility, and stability over time. Therefore, designed TCNQ-Pd-Co@NC nanocomposite–based carbon paste electrodes can be efficiently used for precise and selective NADH sensing.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\n","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":null,"pages":null},"PeriodicalIF":2.7000,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Design of a Low Voltage TCNQ-Pd-Co@NC-Modified Electrode–Based NADH Sensor\",\"authors\":\"Kuldeep Kumar Maurya, Kulveer Singh, Chitra Singh, Manisha Malviya\",\"doi\":\"10.1007/s12678-024-00865-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The present work involves the design and validation of an electrochemical sensor for precise and selective sensing of nicotinamide adenine dinucleotide (NADH). The designed electrochemical sensor consists of TCNQ and Pd-Co@NC nanocomposite–modified electrodes (TCNQ-Pd-Co@NC/CPE). The designed electrode was validated by cyclic voltammetry, amperometry, and electrochemical impedance spectroscopy (EIS). The results revealed potent electrocatalytic activity towards NADH oxidation and sensing. Cyclic voltammetry revealed the superior capability of TCNQ-Pd-Co@NC-based carbon paste electrode in electron transfer than TCNQ-Co@NC/CPE and TCNQ/CPE, validating better conductivity of TCNQ-Pd-Co@NC/CPE for NADH sensing. Amperometry study provided a wide linear range of 10 to 250 µM for NADH detection with a low detection limit (LOD) of 5.17 µM and a sensitivity of 21.5 µA mM. EIS study revealed the lowest <i>R</i><sub>ct</sub> value of 12.5 × 10<sup>2</sup> for TCNQ-Pd-Co@NC/CPE compared to TCNQ-Co@NC/CPE and TCNQ/CPE, demonstrating high electron transfer capability and thus sensitivity towards NADH. Besides this, the modified TCNQ-Pd-Co@NC-based carbon paste electrodes offered exceptional selectivity, reproducibility, and stability over time. Therefore, designed TCNQ-Pd-Co@NC nanocomposite–based carbon paste electrodes can be efficiently used for precise and selective NADH sensing.</p><h3 data-test=\\\"abstract-sub-heading\\\">Graphical Abstract</h3>\\n\",\"PeriodicalId\":535,\"journal\":{\"name\":\"Electrocatalysis\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2024-02-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Electrocatalysis\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1007/s12678-024-00865-y\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrocatalysis","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1007/s12678-024-00865-y","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Design of a Low Voltage TCNQ-Pd-Co@NC-Modified Electrode–Based NADH Sensor
The present work involves the design and validation of an electrochemical sensor for precise and selective sensing of nicotinamide adenine dinucleotide (NADH). The designed electrochemical sensor consists of TCNQ and Pd-Co@NC nanocomposite–modified electrodes (TCNQ-Pd-Co@NC/CPE). The designed electrode was validated by cyclic voltammetry, amperometry, and electrochemical impedance spectroscopy (EIS). The results revealed potent electrocatalytic activity towards NADH oxidation and sensing. Cyclic voltammetry revealed the superior capability of TCNQ-Pd-Co@NC-based carbon paste electrode in electron transfer than TCNQ-Co@NC/CPE and TCNQ/CPE, validating better conductivity of TCNQ-Pd-Co@NC/CPE for NADH sensing. Amperometry study provided a wide linear range of 10 to 250 µM for NADH detection with a low detection limit (LOD) of 5.17 µM and a sensitivity of 21.5 µA mM. EIS study revealed the lowest Rct value of 12.5 × 102 for TCNQ-Pd-Co@NC/CPE compared to TCNQ-Co@NC/CPE and TCNQ/CPE, demonstrating high electron transfer capability and thus sensitivity towards NADH. Besides this, the modified TCNQ-Pd-Co@NC-based carbon paste electrodes offered exceptional selectivity, reproducibility, and stability over time. Therefore, designed TCNQ-Pd-Co@NC nanocomposite–based carbon paste electrodes can be efficiently used for precise and selective NADH sensing.
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Electrocatalysis is cross-disciplinary in nature, and attracts the interest of chemists, physicists, biochemists, surface and materials scientists, and engineers. Electrocatalysis provides the unique international forum solely dedicated to the exchange of novel ideas in electrocatalysis for academic, government, and industrial researchers. Quick publication of new results, concepts, and inventions made involving Electrocatalysis stimulates scientific discoveries and breakthroughs, promotes the scientific and engineering concepts that are critical to the development of novel electrochemical technologies.
Electrocatalysis publishes original submissions in the form of letters, research papers, review articles, book reviews, and educational papers. Letters are preliminary reports that communicate new and important findings. Regular research papers are complete reports of new results, and their analysis and discussion. Review articles critically and constructively examine development in areas of electrocatalysis that are of broad interest and importance. Educational papers discuss important concepts whose understanding is vital to advances in theoretical and experimental aspects of electrochemical reactions.
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