<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2448-5691</journal-id>
<journal-title><![CDATA[Mundo nano. Revista interdisciplinaria en nanociencias y nanotecnología]]></journal-title>
<abbrev-journal-title><![CDATA[Mundo nano]]></abbrev-journal-title>
<issn>2448-5691</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias Aplicadas y Tecnología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2448-56912015000100006</article-id>
<article-id pub-id-type="doi">10.22201/ceiich.24485691e.2015.14.52508</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación electroquímica de nanoestructuras Fe/MWCNT-Pt y Fe/MWCNT-Pt-Pd como materiales de cátodos multifuncionales con potencial aplicación en el mejoramiento de la calidad de agua tratada]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Borbón Jara]]></surname>
<given-names><![CDATA[Brenda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Medel]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bedolla Valdez]]></surname>
<given-names><![CDATA[Zaira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alonso Núñez]]></surname>
<given-names><![CDATA[Gabriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oropeza Guzmán]]></surname>
<given-names><![CDATA[Mercedes T.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Investigación y Desarrollo Tecnológico en Electroquímica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2015</year>
</pub-date>
<volume>8</volume>
<numero>14</numero>
<fpage>6</fpage>
<lpage>16</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-56912015000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-56912015000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-56912015000100006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: En este artículo se presenta una estrategia de evaluación electroquímica para materiales nanoestructurados con potencial uso en cátodos multifuncionales, con el fin de incrementar la capacidad de degradación y eliminación de materia orgánica recalcitrante en agua tratada por vía electroquímica. El principal objeto de estudio es la producción de radical hidroxilo (&#8226;OH), que es identificado como un agente altamente oxidante (2.8 V vs. ENH), únicamente superado por el flúor (3.03 v vs. ENH). Este radical suele formarse en la superficie de un ánodo catalítico o por reacciones tipo Fenton; sin embargo, en este artículo se demuestra que es factible su formación en un cátodo, asemejando el proceso de oxidación avanzada (AOP), conocido como electro-Fenton. La elevada reactividad del &#8226;OH para llevar a cabo la destrucción de compuestos biorrefractarios y recalcitrantes está plenamente probada y justifica la propuesta de ensayar materiales nanoestructurados para multiplicar su producción en una celda electroquímica. La evaluación de cátodos de tipo multifuncional, conteniendo Pt y Pt-Pd, soportados sobre nanotubos de carbón multipared (MWCNT) se realizó por voltamperometría cíclica, para determinar la producción in-situ del radical &#8226;OH. De esta manera, el desarrollo de un nuevo proceso de reducción electroquímica de tipo multifuncional (O&#8322; a H&#8322;O&#8322; y H&#8322;O&#8322; a &#8226;OH) tiene una potencial aplicación en celdas electroquímicas ya concebidas para mejorar la calidad de agua tratada.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: This paper presents an electrochemical strategy to evaluate nanostructured materials with high potential to be used as multifunctional cathodes. The goal is to increase the capability of an electrochemical process to degrade and eliminate recalcitrant organic compounds in treated water. The object under study is the production of hydroxyl radical (&#8226;OH), also identified as a powerful oxidant (2.8 V vs. ENH), only overcome by Fluorine (3.03 V vs. ENH). This radical is commonly formed on the surface of catalytic anodes or by Fenton reactions; however, this paper shows that it is also possible to form the radical on a cathode, simulating the advanced oxidation mechanism known as electro-Fenton. The high reactivity of &#8226;OH to destroy persistent compounds is plentifully proved and justify the use of electrocatalytic nanostructured materials to multiply its effectiveness in an electrochemical cell. The evaluation of multifunctional cathodes­ containing Pt y Pt-Pd, supported on raw multiwalled carbon nanotubes, MWCNT, was done by cyclic voltammetry to validate the in-situ formation of &#8226;OH radical. At this point, authors visualize the feasibility to develop a new electrochemical process using a multifunctional electrodes, with Fe species in the electrode surface and supported electrocatalysts, to transform O&#8322; into H&#8322;O&#8322; and H&#8322;O&#8322; into &#8226;OH, accordingly to improve the quality of treated water without extra chemicals.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[radical hidroxilo]]></kwd>
<kwd lng="es"><![CDATA[Pt/MWCNT]]></kwd>
<kwd lng="es"><![CDATA[calidad de agua tratada]]></kwd>
<kwd lng="es"><![CDATA[proceso electro-Fenton]]></kwd>
<kwd lng="en"><![CDATA[hydroxyl radical]]></kwd>
<kwd lng="en"><![CDATA[Pt/MWCNT]]></kwd>
<kwd lng="en"><![CDATA[quality of treated water]]></kwd>
<kwd lng="en"><![CDATA[electro-Fenton process]]></kwd>
</kwd-group>
</article-meta>
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