{"title":"Non-enzymatic glucose oxidation to gluconic acid with N, N′-bis(2-hydroxybenzylidineamino) benzene gold (III) complex","authors":"Sontara Konwar Boruah, Hirendra Das, Prabin Kumar Boruah","doi":"10.1007/s12039-023-02198-7","DOIUrl":null,"url":null,"abstract":"<div><p>In this paper we report non-enzymatic glucose oxidation with N, N′-Bis(2-hydroxybenzylidineamino) benzene gold (III) complex on reduced graphene oxide-gold (rGO-Au) nanoparticle coated modified copper (Cu) electrode. Potassium ferricyanide in 50 mM phosphate buffer solution (pH 7.0) was used as a mediator. The [(Salophen)Au]<sup>+</sup> on rGO shows good catalytic property for the oxidation of glucose to gluconic acid (GA). The maximum current response produced by Au<sup>3+</sup>/Au<sup>+</sup> redox potential was monitored by the linear sweep voltammetric method (LSV). As glucose concentration increases the current response at Au<sup>+3</sup>/Au<sup>+</sup> redox potential decreases simultaneously. On catalytic oxidation of glucose to GA by the complex [(Salophen)Au]<sup><b>+</b></sup>, the solution pH reduces to 2.75, which results the decrease of current responses at the Au<sup>3+</sup>/Au<sup>+</sup> working potential.</p><h3>Graphical abstract</h3><p>Direct oxidation of glucose to gluconic acid is achieved adopting nonenzytnatic technique by rGO based heterogeneous catalyst is reported in the present study. N,N'-Bis (2-hydroxy benzylidineatnino) benzene gold (III) complex on rGO-Au nanoparticles is used to fabricate the tnodified electrode. The oxidation mechanism is demonstrated. This work showed the potential of using [(Salophen)Au]<sup>+</sup> Schiff base complex as a nonenzymatic substitute for glucose oxidize enzyme.\n</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":616,"journal":{"name":"Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Chemical Sciences","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s12039-023-02198-7","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper we report non-enzymatic glucose oxidation with N, N′-Bis(2-hydroxybenzylidineamino) benzene gold (III) complex on reduced graphene oxide-gold (rGO-Au) nanoparticle coated modified copper (Cu) electrode. Potassium ferricyanide in 50 mM phosphate buffer solution (pH 7.0) was used as a mediator. The [(Salophen)Au]+ on rGO shows good catalytic property for the oxidation of glucose to gluconic acid (GA). The maximum current response produced by Au3+/Au+ redox potential was monitored by the linear sweep voltammetric method (LSV). As glucose concentration increases the current response at Au+3/Au+ redox potential decreases simultaneously. On catalytic oxidation of glucose to GA by the complex [(Salophen)Au]+, the solution pH reduces to 2.75, which results the decrease of current responses at the Au3+/Au+ working potential.
Graphical abstract
Direct oxidation of glucose to gluconic acid is achieved adopting nonenzytnatic technique by rGO based heterogeneous catalyst is reported in the present study. N,N'-Bis (2-hydroxy benzylidineatnino) benzene gold (III) complex on rGO-Au nanoparticles is used to fabricate the tnodified electrode. The oxidation mechanism is demonstrated. This work showed the potential of using [(Salophen)Au]+ Schiff base complex as a nonenzymatic substitute for glucose oxidize enzyme.
期刊介绍:
Journal of Chemical Sciences is a monthly journal published by the Indian Academy of Sciences. It formed part of the original Proceedings of the Indian Academy of Sciences – Part A, started by the Nobel Laureate Prof C V Raman in 1934, that was split in 1978 into three separate journals. It was renamed as Journal of Chemical Sciences in 2004. The journal publishes original research articles and rapid communications, covering all areas of chemical sciences. A significant feature of the journal is its special issues, brought out from time to time, devoted to conference symposia/proceedings in frontier areas of the subject, held not only in India but also in other countries.