{"title":"在 GO/Fe3O4-PMDA@Bi 纳米复合材料上同时电传感鸟嘌呤和腺嘌呤","authors":"Mehdi Baghayeri, Marzieh Nodehi, Amirhasan Amiri, Habib Ashena, Fatemeh Abedi, Roya Mehrkhah","doi":"10.1007/s11244-024-01960-6","DOIUrl":null,"url":null,"abstract":"<p>Herein, we report developing an electrochemical sensor based on a glassy carbon electrode modified by bismuth nanoparticles, graphene oxide, iron oxide, and poly-methyldopa namely Bi@Fe<sub>3</sub>O<sub>4</sub>-PMDA/GO/GCE for detecting guanine and adenine. Under optimized conditions (5 μL of Fe<sub>3</sub>O<sub>4</sub>-PMDA/GO, 0.5 mg mL<sup>−1</sup> of Fe<sub>3</sub>O<sub>4</sub>-PMDA/GO solution, water as solvent of Fe<sub>3</sub>O<sub>4</sub>-PMDA/GO and acetate buffer (0.1 M, pH 6) as electrolytes), the electrochemical behaviors of guanine and adenine on the prepared modified electrode were investigated by cyclic voltammetry and differential pulse voltammetry. With a high specific surface area and numerous active sites, Bi@Fe<sub>3</sub>O<sub>4</sub>-PMDA/GO/GCE exhibited outstanding electrocatalytic properties enabling the determination of guanine and adenine over a wide concentration range with the low detection limit. The Bi@Fe<sub>3</sub>O<sub>4</sub>-PMDA/GO/GCE possessed the advantages of simplicity, speed, good sensitivity, and anti-interference performance. Using the DPV method, the resulting sensor exhibited an excellent response with a wide linear ranges from 0.5 to 300 μM for both analytes with LODs 0.027 and 0.032 µM for adenine and guanine, respectively. The designed electrode was satisfactorily employed for the analysis of the real sample. Therefore, Bi@Fe<sub>3</sub>O<sub>4</sub>-PMDA/GO/GCE demonstrating sufficient selectivity and sensitivity for the individual and simultaneous study could be applied in widespread fields, including biotechnology or microbiology.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\n","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"240 1","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Simultaneous Electro-Sensing of Guanine and Adenine on GO/Fe3O4-PMDA@Bi Nanocomposite\",\"authors\":\"Mehdi Baghayeri, Marzieh Nodehi, Amirhasan Amiri, Habib Ashena, Fatemeh Abedi, Roya Mehrkhah\",\"doi\":\"10.1007/s11244-024-01960-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Herein, we report developing an electrochemical sensor based on a glassy carbon electrode modified by bismuth nanoparticles, graphene oxide, iron oxide, and poly-methyldopa namely Bi@Fe<sub>3</sub>O<sub>4</sub>-PMDA/GO/GCE for detecting guanine and adenine. Under optimized conditions (5 μL of Fe<sub>3</sub>O<sub>4</sub>-PMDA/GO, 0.5 mg mL<sup>−1</sup> of Fe<sub>3</sub>O<sub>4</sub>-PMDA/GO solution, water as solvent of Fe<sub>3</sub>O<sub>4</sub>-PMDA/GO and acetate buffer (0.1 M, pH 6) as electrolytes), the electrochemical behaviors of guanine and adenine on the prepared modified electrode were investigated by cyclic voltammetry and differential pulse voltammetry. With a high specific surface area and numerous active sites, Bi@Fe<sub>3</sub>O<sub>4</sub>-PMDA/GO/GCE exhibited outstanding electrocatalytic properties enabling the determination of guanine and adenine over a wide concentration range with the low detection limit. The Bi@Fe<sub>3</sub>O<sub>4</sub>-PMDA/GO/GCE possessed the advantages of simplicity, speed, good sensitivity, and anti-interference performance. Using the DPV method, the resulting sensor exhibited an excellent response with a wide linear ranges from 0.5 to 300 μM for both analytes with LODs 0.027 and 0.032 µM for adenine and guanine, respectively. The designed electrode was satisfactorily employed for the analysis of the real sample. Therefore, Bi@Fe<sub>3</sub>O<sub>4</sub>-PMDA/GO/GCE demonstrating sufficient selectivity and sensitivity for the individual and simultaneous study could be applied in widespread fields, including biotechnology or microbiology.</p><h3 data-test=\\\"abstract-sub-heading\\\">Graphical abstract</h3>\\n\",\"PeriodicalId\":801,\"journal\":{\"name\":\"Topics in Catalysis\",\"volume\":\"240 1\",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2024-05-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Topics in Catalysis\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1007/s11244-024-01960-6\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Topics in Catalysis","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1007/s11244-024-01960-6","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
Simultaneous Electro-Sensing of Guanine and Adenine on GO/Fe3O4-PMDA@Bi Nanocomposite
Herein, we report developing an electrochemical sensor based on a glassy carbon electrode modified by bismuth nanoparticles, graphene oxide, iron oxide, and poly-methyldopa namely Bi@Fe3O4-PMDA/GO/GCE for detecting guanine and adenine. Under optimized conditions (5 μL of Fe3O4-PMDA/GO, 0.5 mg mL−1 of Fe3O4-PMDA/GO solution, water as solvent of Fe3O4-PMDA/GO and acetate buffer (0.1 M, pH 6) as electrolytes), the electrochemical behaviors of guanine and adenine on the prepared modified electrode were investigated by cyclic voltammetry and differential pulse voltammetry. With a high specific surface area and numerous active sites, Bi@Fe3O4-PMDA/GO/GCE exhibited outstanding electrocatalytic properties enabling the determination of guanine and adenine over a wide concentration range with the low detection limit. The Bi@Fe3O4-PMDA/GO/GCE possessed the advantages of simplicity, speed, good sensitivity, and anti-interference performance. Using the DPV method, the resulting sensor exhibited an excellent response with a wide linear ranges from 0.5 to 300 μM for both analytes with LODs 0.027 and 0.032 µM for adenine and guanine, respectively. The designed electrode was satisfactorily employed for the analysis of the real sample. Therefore, Bi@Fe3O4-PMDA/GO/GCE demonstrating sufficient selectivity and sensitivity for the individual and simultaneous study could be applied in widespread fields, including biotechnology or microbiology.
期刊介绍：
Topics in Catalysis publishes topical collections in all fields of catalysis which are composed only of invited articles from leading authors. The journal documents today’s emerging and critical trends in all branches of catalysis. Each themed issue is organized by renowned Guest Editors in collaboration with the Editors-in-Chief. Proposals for new topics are welcome and should be submitted directly to the Editors-in-Chief.
The publication of individual uninvited original research articles can be sent to our sister journal Catalysis Letters. This journal aims for rapid publication of high-impact original research articles in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
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