Facile synthesis of hollow palladium/copper alloyed nanocubes for formic acid oxidation

Abstract

Hollow PdCu alloyed nanocubes were successfully synthesized by a novel one-pot template-free strategy through tuning the surface energy difference of the crystal planes by alloying. Compared with the solid nanoparticles, the hollow nanocubes exhibit superior electrocatalytic activity and stability for formic acid oxidation.

Active and Stable Platinum/Ionic Liquid/Carbon Nanotube Electrocatalysts for Oxidation of Methanol

“…It is likely attributed to the stronger adsorption of chlorine on the Pt (100) surface than that on the Pt(111) surface due to the lower work function of Pt(100) surface [44]. The result reveals that Pt/ [BMIM][Cl]/CNT nanohybrid-modified electrode relative to the other tested electrodes provided greater electrooxidation activity toward the MOR [45]. The cathodic oxide reduction peak for the Pt/[BMIM][Cl]/CNT nanohybrids occurred at 0.48 V (Figure 3A), which is at least 0.05 V higher relative to that of the other tested catalysts, showing their less-favorable formation of Pt-OH [46].…”

Hollow palladium–copper bimetallic nanospheres with high oxygen reduction activity

“…Chen's group [9] synthesized hollow PdNi nanoparticles using Ni nanoparticles as sacrificial templates with high ORR activity in alkaline electrolytes. Hollow PdCu nanoparticles synthesized via a novel one-pot template-free strategy have also been reported [12,19]. It is evident that the activities of hollow PdCu/MWCNTs are superior to those of PdCu/MWCNTs and Pd/MWCNTs catalysts in formic acid oxidation.…”

“…The use of bimetallic Pd-TMs electrocatalysts, such as Pd-Ni [9], Pd-Fe [10], Pd-Cu [11,12], and Pd-Co [13,14], has been proven effective for reducing costs and improving catalytic performance and durability as a result of changes in the geometric and electronic structures of Pd [15,16]. Zhang et al [17] speculated that ORR is a surface catalytic process; therefore, hollow materials are proposed to be effective catalysts because of their high surface areas, low densities, and the enhanced catalytic activities compared to solid nanoparticles [18,19].…”

Synthesis and catalytic properties of bimetallic nanomaterials with various architectures

“…Because of this, much effort has been devoted to establishing one-step template-free methods to synthesize hollow nanostructures [57][58][59]. For example, Yang and co-workers [57] showed the preparation of hollow PdCu alloyed nanocubes by a novel one-pot template-free strategy through tuning the surface energy difference of the crystal planes by alloying.…”