Enhanced catalytic activity of ternary Pd-Ni-Ir nanoparticles supported on carbon toward formic acid electro-oxidation
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Aiming to further promote the performance of PdNi for formic acid electro-oxidation (FAEO), ternary Pd-Ni-Ir/C nanocatalyst was synthesized via an ethylene glycol-assisted NaBH4 reduction process. The physical characterizations show that the PdNiIr nanoparticles with a small mean size are well dispersed on carbon support. The electrochemical measurements demonstrate that the PdNiIr/C catalyst exhibits the highest activity for FAEO. The onset and peak potential of FAEO on PdNiIr/C is about 70 mV more negative than that on the Pd/C and PdNi/C catalysts. The mass activity of Pd in PdNiIr/C at 0.14 V is 2830 mA mg−1Pd, which is about 1.65, 1.82, and 2.2 times as high as that of PdIr/C, PdNi/C, and Pd/C, respectively. The enhancement should be attributed to the electronic effect and bi-functional mechanism.
KeywordsFormic acid Electro-oxidation Nanoparticles PdNiIr/C catalyst
This work is supported by the Key Research and Development Projects in Sichuan Province (2017GZ0397), the Science and Technology Project of Chengdu (2015-HM01-00531-SF), the National Natural Science Foundation of China (21306119), and the Outstanding Young Scientist Foundation of Sichuan University (2013SCU04A23).
- 3.Zhang L, Choi S-I, Tao J, Peng H-C, Xie S, Zhu Y, Xie Z, Xia Y (2014) Pd-Cu bimetallic tripods: a mechanistic understanding of the synthesis and their enhanced electrocatalytic activity for formic acid oxidation. Adv Funct Mater 24(47):7520–7529. https://doi.org/10.1002/adfm.201402350 CrossRefGoogle Scholar
- 5.Yang S, Chung DY, Tak Y-J, Kim J, Han H, Yu J-S, Soon A, Sung Y-E, Lee H (2015) Electronic structure modification of platinum on titanium nitride resulting in enhanced catalytic activity and durability for oxygen reduction and formic acid oxidation. Appl Catal Environ 174:35–42CrossRefGoogle Scholar
- 8.Gunji T, Noh SH, Tanabe T, Han B, Nien CY, Ohsaka T, Matsumoto F (2017) Enhanced electrocatalytic activity of carbon-supported ordered intermetallic palladium-lead (Pd3Pb) nanoparticles toward electrooxidation of formic acid. Chem Mater 29(7):2906–2913. https://doi.org/10.1021/acs.chemmater.6b05191 CrossRefGoogle Scholar
- 9.Zhao R, Liu Z, Gong M, Zhang Q, Shi X, Hu Y, Qi W, Tang Y, Wang Y (2017) Ethylenediamine tetramethylene phosphonic acid assisted synthesis of palladium nanocubes and their electrocatalysis of formic acid oxidation. J Solid State Electr 21(5):1297–1303. https://doi.org/10.1007/s10008-016-3470-6 CrossRefGoogle Scholar
- 15.Matos J, Borodzinski A, Zychora AM, Kedzierzawski P, Mierzwa B, Juchniewicz K, Mazurkiewicz M, Hernandez-Garrido JC (2015) Direct formic acid fuel cells on Pd catalysts supported on hybrid TiO2-C materials. Appl Catal Environ 163:167–178. https://doi.org/10.1016/j.apcatb.2014.07.063 CrossRefGoogle Scholar
- 20.Hosseini H, Mahyari M, Bagheri A, Shaabani A (2014) Pd and PdCo alloy nanoparticles supported on polypropylenimine dendrimer-grafted graphene: a highly efficient anodic catalyst for direct formic acid fuel cells. J Power Sources 247:70–77. https://doi.org/10.1016/j.jpowsour.2013.08.061 CrossRefGoogle Scholar
- 27.Ding K, Liu L, Cao Y, Yan X, Wei H, Guo Z (2014) Formic acid oxidation reaction on a PdxNiy bimetallic nanoparticle catalyst prepared by a thermal decomposition process using ionic liquids as the solvent. Inter J Hydrogen Energy 39(14):7326–7337. https://doi.org/10.1016/j.ijhydene.2014.03.026 CrossRefGoogle Scholar
- 28.Zhang J-M, Wang R-X, Nong R-J, Li Y, Zhang X-J, Zhang P-Y, Fan YJ (2017) Hydrogen co-reduction synthesis of PdPtNi alloy nanoparticles on carbon nanotubes as enhanced catalyst for formic acid electrooxidation. Inter J Hydrogen Energy 42(10):7226–7234. https://doi.org/10.1016/j.ijhydene.2016.05.198 CrossRefGoogle Scholar