@InProceedings{SantosOlOkBaMeBa:2023:SyChPd,
               author = "Santos, Mariany Ludgero Maia Gomes and Oliveira, Isa{\'{\i}}as 
                         de and Okamoto, Sayuri and Bazan Diaz, Lourdes and Mendoza, 
                         Rub{\'e}n and Baldan, Maur{\'{\i}}cio Ribeiro",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {National Autonomous University of 
                         Mexico (UNAM)} and {National Autonomous University of Mexico 
                         (UNAM)} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Synthesis and characterization of Pd and Nb electrocatalysts 
                         supported on carbon xarogel derived the Tannin formaldehyde system 
                         and on vulcan(R) XC72R carbon black",
            booktitle = "Proceedings...",
                 year = "2023",
         organization = "International Materials Research Congress, 31.",
            publisher = "MRS",
             keywords = "Electrocatalysts, Palladium, Niobium.",
             abstract = "The present work deals with the development of Pd (palladium) and 
                         Nb (niobium) electrocatalysts, reduced via the reduction technique 
                         by sodium boron hydride, on carbonaceous supports, namely Vulcan® 
                         XC72R carbon black, commonly used as catalytic support,and carbon 
                         xerogel (CX) derived the tannin-formaldehyde system. Tannin is an 
                         organic, renewable source material and a cheap carbon precursor. 
                         The objective is to apply the electrocatalysts developed as the 
                         anode in a fuel cell of the ADEFC type (Alkaline Direct Ethanol 
                         Fuel Cell). For all the developed electrocatalysts, the SEMFEG 
                         images indicate that the catalytic supports did not have their 
                         structure modified after the electrocatalyst synthesis process,and 
                         via TEM it is possible to observe the metallic distribution on the 
                         surface of the electrocatalysts as well as the interaction between 
                         the metals and carbonaceous catalytic supports. The surface area 
                         exposed to the reaction o fall electrocatalysts was analyzed via 
                         N2 physisorption. By Ramanspectroscopy, all materials showed a D 
                         band around 1340 cm-1,indicating a disordered structure, which 
                         could be confirmed by the Id/Ig ratio,on average 1.3 for 
                         electrocatalysts supported on CX, and 2.3 for electrocatalysts 
                         supported on Vulcan®XC72R. By XRD, in addition to the analysis of 
                         the diffractograms presented by the electrocatalysts under study, 
                         the size of the crystallite was also calculated via the 
                         Debye-Scherrer equation, taking into account the peak of Pd (111), 
                         at approximately 2\θ = 40.2, and crystallites of, on 
                         average, 8.1nm. The size of the crystallite is related to the way 
                         in which the particles are dispersed on the surface of the 
                         support. In turn, the metallic dispersion is strongly linked to 
                         the performance of the material in the final application, the 
                         greater the dispersion, the greater the energy efficiency of the 
                         material. The presented results demonstrate that the control of 
                         the final properties of a certain material is intimately linked to 
                         the synthesis control.The results also demonstrate the synthesis 
                         control potential, and chemical and physical properties of the CX 
                         catalytic support, and consequently of the electrocatalysts 
                         supported on this catalytic support.",
  conference-location = "Canc{\'u}n, Mexico",
      conference-year = "13-18 Aug. 2023",
             language = "en",
           targetfile = "simB11-abs012.pdf",
        urlaccessdate = "03 jun. 2024"
}