PEREIRA, VIVIANE S.NANDENHA, JULIORAMOS, ANDREZZAOLIVEIRA NETO, ALMIR2022-12-162022-12-162022PEREIRA, VIVIANE S.; NANDENHA, JULIO; RAMOS, ANDREZZA; OLIVEIRA NETO, ALMIR. Effects of TiO2 in Pd-TiO2/C for glycerol oxidation in a direct alkaline fuel cell. <b>Journal of Fuel Chemistry and Technology</b>, v. 50, n. 4, p. 474-483, 2022. DOI: <a href="https://dx.doi.org/10.1016/S1872-5813(21)60171-8">10.1016/S1872-5813(21)60171-8</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/33469.1872-5813http://repositorio.ipen.br/handle/123456789/33469The Pd-TiO2 electrocatalysts were synthesized via sodium borohydride reduction and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), cyclic voltammetry, chronoamperometry and attenuated total reflectance-Fourier transform infrared (ATR-FTIR). The X-ray diffraction experiments of the Pd-TiO2 showed peaks associated with Pd face-centered cubic (fcc) structure and peaks characteristics of TiO2 (anatase phase) with a tetragonal structure. The TEM images showed that the Pd and TiO2 nanoparticles were well distributed in the carbon support showing some clustered regions with nanoparticle sizes between 7 and 8 nm. Cyclic voltammograms showed an increase in current density values after the glycerol adsorption process. Experiments in alkaline direct glycerol fuel cells at 60 °C showed a higher power density for Pd-TiO2/C (70:30) in comparison to the commercial Pd/C electrocatalyst indicating that the use of the TiO2 co-catalyst with Pd nanoparticles had a beneficial behavior. This effect can be attributed to the electronic effect or to the bifunctional mechanism. Molecules with high-value added glyceraldehyde, hydroxypyruvate and formate were identified as electrochemical reaction products of glycerol on all prepared electrocatalysts.474-483openAccesselectrocatalyststitaniumpalladiumglycerolalkaline electrolyte fuel cellsfuel cellsvoltametryEffects of TiO2 in Pd-TiO2/C for glycerol oxidation in a direct alkaline fuel cellArtigo de periódico45010.1016/S1872-5813(21)60171-80000-0001-8745-3421https://orcid.org/0000-0002-9287-6071Sem Percentil35.67