Stepwise synthesis of “Pt-on-PdAg” hybrid trigonal/hexagonal nanocrystals for efficient electroxidation of methanol: Interface engineering for trimetallic electrocatalyst was written by Zhang, Gongguo;Wang, Yingying;Liu, Feng;Kong, Yuhan;Liu, Maochang;Zheng, Yiqun. And the article was included in Journal of Alloys and Compounds in 2022.Name: Sodium tetrachloropalladate(II) The following contents are mentioned in the article:
We report the fabrication of “Pt-on-PdAg” heterogeneous nanocrystals in the form of trigonal/hexagonal plate (THNPs) and explored their applications in electroxidn. of methanol (MOR) in alk. medium. In particular, PdAg polyhedral nanoparticles are prepared in advance, followed by the addition of Pt salts to allow in situ galvanic replacement reaction (GRR) between them, leading to the formation of Pt nano-islands on PdAg particle surface and the transformation of the overall morphol. into trigon/hexagon. The deliberately designed Pt-“PdAg alloy” interface arising from the hybrid structure greatly enriches the absorption sites, showing noticeable structural advantages in MOR electrocatalysis. Particularly, the carbon-supported Pt-on-PdAg THNPs exhibit nearly 30-fold increase in specific activity as compared to that of com. Pt/C, as well as enhanced reaction kinetics and long-term durability. DFT calculations suggest that the reaction of CH3OH oxidation mediated by PtAgPd is energetically more favorable compared to the similar reaction promoted by Pt, which rationalizes the exptl. observation that PtAgPd shows the improved catalytic performance. The present study offers a feasible route to construct trimetallic nanocrystals with successful interface engineering, and validates their promising use as fuel cell electrocatalyst from both exptl. validation and fundamental insights. It may help enlighten the rational design of heterostructured electrocatalysts with regulated multiple active sites. This study involved multiple reactions and reactants, such as Sodium tetrachloropalladate(II) (cas: 13820-53-6Name: Sodium tetrachloropalladate(II)).
Sodium tetrachloropalladate(II) (cas: 13820-53-6) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Name: Sodium tetrachloropalladate(II)
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Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics