Simple synthesis of N-doped catalysts with controllable Pt–Ni nanoparticles for high-efficiency ethanol oxidation
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Herein, the catalysts contained metal- and nitrogen-doped carriers were synthesized by a novel and simple method. The synthesized catalysts with different particle size and distribution were controlled by adjusting the ratio of urea and metal salt solution. The morphology, microstructure, and particle distribution of the catalysts were confirmed by transmission electron microscopy and X-ray powder diffraction. The catalytic performance of the catalysts was tested by cyclic voltammetry (CV) and amperometric i-t curves. It was found that the urea content had an influence on the distribution of metal particles and the size of the nanoparticles. More catalyst active sites were formed on the surface of the catalyst due to that many nitrogen-based functional groups were formed on the surface of the carrier. Compared with other samples, catalyst with urea amount of 100 mg (Pt2Ni3/C–N3 samples) possessed small particle size and uniform distribution, which exhibited higher electrocatalytic activity and stability, and the maximum of forward anodic peak reached 1454 mA mg−1.
KeywordsNovel method Ethanol electro-oxidation N-doped catalysts Pt-based electrocatalysts
This research was supported by the Science and Technology Development Fund of Tianjin Education Commission for Higher Education (2018KJ202).
- 6.Antolini E (2017) Pt-Ni and Pt-M-Ni (M = Ru, Sn) anode catalysts for low-temperature acidic direct alcohol fuel cells: a review. Energies 10:42. https://doi.org/10.3390/en10010042
- 11.Wang L, Tang Z, Yan W, Wang Q, Yang H, Chen S (2017) Co@Pt Core@Shell nanoparticles encapsulated in porous carbon derived from zeolitic imidazolate framework 67 for oxygen electroreduction in alkaline media. J Power Sources 343:458–466. https://doi.org/10.1016/j.jpowsour.2017.01.081 CrossRefGoogle Scholar
- 13.González-Quijano D, Pech-Rodríguez WJ, Escalante-García JI, Vargas-Gutiérrez G, Rodríguez-Varela FJ (2014) Highly active Pt-Sn/C catalysts for ethanol electro-oxidation prepared by a polyol-alcohol reduction process. Electrochem Soc 591:1–9Google Scholar
- 16.Jin Y, Zhao J, Li F, Jia W, Liang D, Chen H, Li R, Hu J, Ni J, Wu T, Zhong D (2016) Nitrogen-doped graphene supported palladium-nickel nanoparticles with enhanced catalytic performance for formic acid oxidation. Electrochim Acta 220:83–90. https://doi.org/10.1016/j.electacta.2016.10.087 CrossRefGoogle Scholar
- 18.Zheng F-S, Liu S-H, Kuo C-W (2016) Synthesis, characterization, and electrochemical performance of nitrogen-modified Pt–Fe alloy nanoparticles supported on ordered mesoporous carbons. J Nanopart Res 18:75. https://doi.org/10.1007/s11051-016-3387-0
- 34.Aran-Ais RM, Dionigi F, Merzdorf T, Gocyla M, Heggen M, Dunin-Borkowski RE, Gliech M, Solla-Gullon J, Herrero E, Feliu JM, Strasser P (2015) Elemental anisotropic growth and atomic-scale structure of shape-controlled octahedral Pt-Ni-co alloy nanocatalysts. Nano Lett 15:7473–7480. https://doi.org/10.1021/acs.nanolett.5b03057 CrossRefGoogle Scholar
- 36.Xia T, Liu J, Wang S, Wang C, Sun Y, Gu L, Wang R (2016) Enhanced catalytic activities of NiPt truncated octahedral nanoparticles toward ethylene glycol oxidation and oxygen reduction in alkaline electrolyte. ACS Appl Mater Interfaces 8:10841–10849. https://doi.org/10.1021/acsami.6b01115 CrossRefGoogle Scholar