Citation: Santos Pereira Viviane, Nandenha Júlio, Ramos Andrezza, Oliveira Neto Almir. Effects of TiO₂ in Pd-TiO₂/C for glycerol oxidation in a direct alkaline fuel cell[J]. Journal of Fuel Chemistry and Technology, ;2022, 50(4): 474-483. doi: 10.1016/S1872-5813(21)60171-8 shu

Effects of TiO₂ in Pd-TiO₂/C for glycerol oxidation in a direct alkaline fuel cell

1.
Instituto de Pesquisas Energéticas e Nucleares-IPEN-CNEN/SP Centro de Células a Combustível e Hidrogênio-CECCO , Cidade Universitária, São Paulo-SP 05508-000, Brasil

Corresponding author: Santos Pereira Viviane, viviane_sp_saopaulo@yahoo.com.br
Received Date: 16 September 2021
Revised Date: 26 October 2021
Accepted Date: 28 October 2021

Figures(8)

The 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.
- glycerol oxidation,
- Pd-TiO₂ electrocatalysts,
- in-situ ATR-FTIR,
- cyclic voltammetry,
- alkaline fuel cell
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Effects of TiO2 in Pd-TiO2/C for glycerol oxidation in a direct alkaline fuel cell

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通讯作者: 陈斌, bchen63@163.com

Effects of TiO₂ in Pd-TiO₂/C for glycerol oxidation in a direct alkaline fuel cell