Rapid synthesis of Palladium-Platinum-Nickel ultrathin porous nanosheets with high catalytic performance for alcohol electrooxidation

• Published in: Journal of colloid and interface science Vol. 650; no. Pt A; pp. 350 - 357
• Main Authors: Wang, Dongqiong, Zhang, Yangping, Zhang, Kewang, Wang, Xiaomei, Wang, Caiqin, Li, Zhuolin, Gao, Fei, Du, Yukou
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 15.11.2023
• Subjects: 2D porous material; Electrocatalytic oxidation; PdPtNi nanosheets; Trimetallic nanocatalysts; 2D porous material; Electrocatalytic oxidation; Trimetallic nanocatalysts; PdPtNi nanosheets
• ISSN: 0021-9797; 1095-7103
• DOI: 10.1016/j.jcis.2023.06.213

[Display omitted] •A one-pot strategy was developed for the successful formation of PdPtNi porous nanosheets.•The PdPtNi PNS provide ideal electrocatalytic active sites.•The PdPtNi PNS displayed improved electrocatalytic performance toward MOR and EOR. Bimetallic two-dimensional (2D) nanomaterials are widely used in electrocatalysis owing to their unique physicochemical properties, while trimetallic 2D materials of porous structures with large surface area are rarely reported. In this paper, a one-pot hydrothermal synthesis of ternary ultra-thin PdPtNi nanosheets is developed. By adjusting the volume ratio of the mixed solvents, PdPtNi with porous nanosheets (PNSs) and ultrathin nanosheets (UNSs) was prepared. The growth mechanism of PNSs was investigated through a series of control experiments. Notably, thanks to the high atom utilization efficiency and fast electron transfer, the PdPtNi PNSs have remarkable activity of methanol oxidation reaction (MOR) and ethanol oxidation reaction (EOR). The mass activities of the well-tuned PdPtNi PNSs for MOR and EOR were 6.21 A mg−1 and 5.12 A mg−1, respectively, much higher than those of commercial Pt/C and Pd/C. In addition, after durability test, the PdPtNi PNSs exhibited desirable stability with the highest retained current density. Therefore, this work provides a significant guidance for designing and synthesizing a new 2D material with excellent catalytic performance toward direct fuel cells applications.