dc.creator | Portorreal Bottier, Arismendy Antonio | es |
dc.creator | Gutiérrez Tarriño, Silvia | es |
dc.creator | Calvente Pacheco, Juan José | es |
dc.creator | Andreu Fondacabe, Rafael Jesús | es |
dc.creator | Roldán González, Emilio | es |
dc.creator | Oña Burgos, Pascual | es |
dc.creator | Olloqui Sariego, José Luis | es |
dc.date.accessioned | 2024-01-31T08:13:50Z | |
dc.date.available | 2024-01-31T08:13:50Z | |
dc.date.issued | 2022-10 | |
dc.identifier.citation | Portorreal Bottier, A.A., Gutiérrez Tarriño, S., Calvente Pacheco, J.J., Andreu Fondacabe, R.J., Roldán González, E., Oña Burgos, P. y Olloqui Sariego, J.L. (2022). Enzyme-like activity of cobalt-MOF nanosheets for hydrogen peroxide electrochemical sensing. Sensors and Actuators B: Chemical, 368, 132129. https://doi.org/10.1016/j.snb.2022.132129. | |
dc.identifier.issn | 0925-4005 | es |
dc.identifier.uri | https://hdl.handle.net/11441/154295 | |
dc.description.abstract | Metal-organic frameworks (MOFs) are receiving increased attention as new functional nanomaterials for the development of electrochemical sensors. Herein, we develop an electrochemical platform for non-enzymatic hydrogen peroxide detection built with a composite of two-dimensional cobalt MOF nanosheets and Nafion (2D-Co-MOF@Nafion). The feasibility of the 2D-Co-MOF@Nafion composite as active material for high performance hydrogen peroxide sensor was investigated by using cyclic voltammetry and chronoamperometry. Its voltammetric response reveals an efficient charge transport through the MOF composite, and rapid electron exchange between MOF and electrode. Notably, these MOF nanosheets exhibit enzyme-like activity for the non-common catalytic oxidation of hydrogen peroxide, leading to an electrochemical sensor with rapid quantitative detection, outstanding sensitivity, selectivity, stability, and durability at the desirable neutral pH. In particular, for a cobalt metal loading of 1.2 nanomol, the sensor yields amperometric H2O2 detection with characteristic electrocatalytic parameters of imax= 5.7 mA cm−2 and KM = 13 mM. Moreover, linear ranges of up to either 1 mM or 10 mM are achieved, with sensitivities as high as 570 ± 5 A cm−2 mM−1 or 395 ± 10 A cm−2 mM−1 for the low and high concentration ranges, respectively. The particular coordination chemistry of the MOF consisting of a regular arrangement of multiple Co(II) redox metal sites connected by appropriate organic ligands can provide inherent enzyme-mimicking properties, thereby explaining the higher oxidase-like activity of the present MOF. This work raises the new idea of using two-dimensional cobalt-based MOFs as active nanozymes, offering exciting opportunities in the design of non-enzymatic electrochemical sensing devices. | es |
dc.format | application/pdf | es |
dc.format.extent | 9 p. | es |
dc.language.iso | eng | es |
dc.publisher | Elsevier | es |
dc.relation.ispartof | Sensors and Actuators B: Chemical, 368, 132129. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Non-enzymatic electrochemical sensor | es |
dc.subject | 2D metal-organic framework | es |
dc.subject | Electrocatalysis | es |
dc.subject | Oxidase activity | es |
dc.subject | Hydrogen peroxide detection | es |
dc.subject | Neutral pH | es |
dc.title | Enzyme-like activity of cobalt-MOF nanosheets for hydrogen peroxide electrochemical sensing | es |
dc.type | info:eu-repo/semantics/article | es |
dc.type.version | info:eu-repo/semantics/acceptedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Química Física | es |
dc.relation.projectID | RTI2018–096399-A-I00 | es |
dc.relation.projectID | P20_01027 | es |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0925400522007717 | es |
dc.identifier.doi | 10.1016/j.snb.2022.132129 | es |
dc.contributor.group | Universidad de Sevilla. FQM128: Cinética Electródica e Instrumentación | es |
dc.journaltitle | Sensors and Actuators B: Chemical | es |
dc.publication.volumen | 368 | es |
dc.publication.initialPage | 132129 | es |
dc.contributor.funder | Gobierno de España | es |
dc.contributor.funder | Junta de Andalucía | es |