{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,15]],"date-time":"2025-10-15T17:49:27Z","timestamp":1760550567830,"version":"3.37.3"},"reference-count":46,"publisher":"Wiley","license":[{"start":{"date-parts":[[2018,1,1]],"date-time":"2018-01-01T00:00:00Z","timestamp":1514764800000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003329","name":"Ministerio de Econom\u00eda y Competitividad","doi-asserted-by":"publisher","award":["AGL2015-67482-R","VA-011U16"],"award-info":[{"award-number":["AGL2015-67482-R","VA-011U16"]}],"id":[{"id":"10.13039\/501100003329","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100008431","name":"Consejer\u00eda de Educaci\u00f3n, Junta de Castilla y Le\u00f3n","doi-asserted-by":"publisher","award":["AGL2015-67482-R","VA-011U16"],"award-info":[{"award-number":["AGL2015-67482-R","VA-011U16"]}],"id":[{"id":"10.13039\/501100008431","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Sensors"],"published-print":{"date-parts":[[2018]]},"abstract":"<jats:p>Porous electrodes based on polymethylmethacrylate and graphite foams (PMMA_G_F) have been developed and characterized. Such devices have been successfully used as voltammetric sensors to analyze catechol, hydroquinone, and their mixtures. The presence of pores induces important changes in the oxidation\/reduction mechanism of catechol and hydroquinone with respect to the sensing properties observed in nonfoamed PMMA_graphite electrodes (PMMA_G). The electropolymerization processes of catechol or hydroquinone at the electrode surface observed using PMMA_G do not occur at the surface of the foamed PMM_G_F. In addition, the limits of detection observed in foamed electrodes are one order of magnitude lower than the observed in the nonfoamed electrodes. Moreover, foamed electrodes can be used to detect simultaneously both isomers and a remarkable increase in the electrocatalytic properties shown by the foamed samples, produces a decrease in the oxidation potential peak of catechol in presence of hydroquinone, from +0.7\u2009V to +0.3\u2009V. Peak currents increased linearly with concentration of catechol in presence of hydroquinone over the range of 0.37\u00b710<jats:sup>\u22123<\/jats:sup>\u2009M to 1.69\u00b710<jats:sup>\u22123<\/jats:sup>\u2009M with a limit of detection (LOD) of 0.27\u2009mM. These effects demonstrate the advantages obtained by increasing the active surface by means of porous structures.<\/jats:p>","DOI":"10.1155\/2018\/2714752","type":"journal-article","created":{"date-parts":[[2018,5,21]],"date-time":"2018-05-21T23:31:12Z","timestamp":1526945472000},"page":"1-9","source":"Crossref","is-referenced-by-count":7,"title":["Polymeric Foams as the Matrix of Voltammetric Sensors for the Detection of Catechol, Hydroquinone, and Their Mixtures"],"prefix":"10.1155","volume":"2018","author":[{"given":"C.","family":"Fernandez-Blanco","sequence":"first","affiliation":[{"name":"GroupUVaSens, Department of Inorganic Chemistry, Engineers School, Universidad de Valladolid, Valladolid, Spain"}]},{"given":"M.","family":"Mugica","sequence":"additional","affiliation":[{"name":"Cellular Materials Laboratory (CellMat), Condensed Matter Physics Department, University of Valladolid, Campus Miguel Delibes, Paseo de Bel\u00e9n n7, Valladolid, Spain"}]},{"given":"M. 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