期刊
INORGANIC CHEMISTRY
卷 61, 期 24, 页码 9352-9363出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.2c01257
关键词
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资金
- Natural Science Foundation of Anhui Province [2008085MB56, 2008085MB30]
- National Natural Science Foundation of China [21871005, 21501005]
We successfully synthesized two-dimensional PtPdCu nanostructures with different morphologies, which exhibited excellent electrocatalytic performances for alcohol oxidation reactions. These nanoalloys showed significantly higher activity compared to commercial Pt/C catalysts, and demonstrated excellent performance and stability for the oxidation of other alcohol molecules.
We precisely synthesized two-dimensional (2D) PtPdCu nanostructures with the morphology varying from porous circular nanodisks (CNDs) and triangular nanoplates (TNPs) to triangular nanoboomerangs (TNBs) by tuning the molar ratios of metal precursors. The PtPdCu trimetallic nanoalloys exhibit superior electrocatalytic performances to alcohol oxidation reactions due to their unique structural features and the synergistic effect. Impressively, PtPdCu TNBs exhibit a high mass activity of 3.42 mg(Pt+Pd)(-1) and 1.06 A.mg(Pt)(-1) for ethanol and methanol oxidation compared to PtPd, PtCu, and pure Pt, which is 3.93 and 4.07 times that of commercial Pt/C catalysts, respectively. Moreover, 2D PtPdCu TNPs and PtPdCu CNDs also show a highly improved electrocatalytic activity. Furthermore, as all-in-one electrocatalysts, PtPdCu nanoalloys display excellent electrocatalytic activity and stability toward the oxidation of other alcohol molecules, such as isopropyl alcohol, glycerol, and ethylene glycol. The enhanced mechanism was well proposed to be the abundant active sites and upshifted d band center based on density functional theory calculations.
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