Citation: You Gui Chen, Lin Zhuang, Jun Tao Lu. A combined electrochemical and DFT study of the lattice strain effect on the surface reactivity of Pd[J]. Chinese Chemical Letters, ;2007, 18(10): 1301-1304. doi: 10.1016/j.cclet.2007.08.006 shu

A combined electrochemical and DFT study of the lattice strain effect on the surface reactivity of Pd

Department of Chemistry, Wuhan University, Wuhan 430072, China

Received Date: 14 March 2007

Fund Project: This work was supported under the Natural Science Foundation of China (No.20433060),and the Program for New Century Excellent Talents in Universities of China (No.NCET-04-0688).

We report a combined study of electrochemical experiments and ab initio calculations on tuning the surface reactivity of Pd via a compressive lattice strain achieved by employing nanoparticles of Pd-Cu alloys with a Pd-rich surface. Surface oxygen-containing species were used as the probing molecule for revealing the surface reactivity. Both density functional theory (DFT) calculations and experiments showed linear relationships, with very close slopes, between the adsorption strength of OH_ads and the Pd lattice constant. Not only is this work a successful realization of controllable modulation in the surface reactivity, but it also provides valuable information for the rational design of Pd-based catalysts for fuel cell applications.
- palladium,
- Lattice strain,
- Reactivity,
- Density functional theory,
- Electrocatalysis
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