Enhanced electrocatalytic performance due to anomalous compressive strain and superior electron retention properties of highly porous Pt nanoparticles

Fabrication of a PdAg mesocrystal catalyst for the partial hydrogenation of acetylene

“…The resulting 3D nanostructures are generally characterized by rough surfaces, high porosity, high densities of crystalline defects, and complex morphologies, with cooperative effects between the building blocks [24][25][26][27][28][29][30]. For example, a porous Pd catalyst showing high catalytic activity in the Suzuki coupling reaction has been reported, and the high activity was attributed to the high concentration of low-coordinate surface atoms [27].…”

Electronic structure modification of platinum on titanium nitride resulting in enhanced catalytic activity and durability for oxygen reduction and formic acid oxidation

“…It is important to utilize Pt effectively without affecting either its activity or durability. Many strategies have been applied to maximize the catalytic activity of Pt catalysts, such as alloying, inducing a surface strain, using a core-shell structure, shape-control, and surface modification by organic molecules [3][4][5][6][7][8][9][10][11][12]. These apparently disparate strategies are all based on modifying the electronic structure of the Pt surface.…”

Enhancement of Activity and Durability through Cr Doping of TiO2 Supports in Pt Electrocatalysts for Oxygen Reduction Reactions

“…White-line change is induced upon applying a potential to cause electronic excitation from the Pt 2p 3/2 core orbital formed through spin-orbit coupling to the Pt d-band vacancy. [63] For both cases, the height of the white-line increased with applied potential because of oxide formation on the Pt surface and a decrease of the electronic occupancy of the Pt 5d shell. [8,63] Interestingly, while white-line height of Pt/C increased by 21.7 % at 1.07 V compared with that at 0.47 V as shown in Figure 7 a, that of Pt/Cr-TiO 2 merely increased by 9.1 % (Figure 7 b), implying that Pt/Cr-TiO 2 has greater electron-retention properties leading to a higher dissolution tolerance in the corrosive ORR environment.…”