2012
DOI: 10.1016/j.jcat.2012.04.004
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Enhanced electrocatalytic performance due to anomalous compressive strain and superior electron retention properties of highly porous Pt nanoparticles

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Cited by 29 publications
(16 citation statements)
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“…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].…”
Section: Introductionmentioning
confidence: 99%
“…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].…”
Section: Introductionmentioning
confidence: 99%
“…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.…”
Section: Introductionmentioning
confidence: 99%
“…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.…”
Section: Resultsmentioning
confidence: 95%