Orbital Overlap Effects in Electron Transfer Reactions across a Metal Nanowire/Electrolyte Solution Interface
Orbital Overlap Effects in Electron Transfer Reactions across a Metal Nanowire/Electrolyte Solution Interface
复制标题
金属纳米线/电解质溶液界面电子转移反应中的轨道重叠效应
DOI:
10.1021/jp400037g
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发表时间:
2013
影响因子:
3.7
通讯作者:
W. Schmickler
中科院分区:
文献类型:
--
作者:
R.R. Nazmutdinov;A.S. Berezin;G. Soldano;W. Schmickler
In this paper, we report on calculations of the orbital overlap between Fe(III) and Cr(III) aquacomplexes and different electrode surfaces: Cu(111), Ag (111), Au(111), Pt(111), and corresponding monatomic wires. The electronic structure of the monocrystalline surfaces and nanowires are described in terms of the electronic spillover and density of electronic states at the Fermi level obtained from periodic density functional theory (DFT) calculations. The transmission coefficients (κ) characterizing the first stage of outer-sphere electron transfer for the reduction of aquacomplexes are calculated on the basis of Landau–Zener theory as a function of electrode–reactant separation; the electronic transmission coefficients for the [Cr(H2O)6]3+/2+redox couple were found to be smaller than those for [Fe(H2O)6]3+/2+. Two different intervals can be clearly distinguished for Cu, Au and Pt: “a catalytic region”, where κ(wire) > κ(Me slab) and “an inhibition region”, where κ(wire) < κ(Me slab). A similar behavior exhibits the coupling constant estimated for a hydrogen atom adsorbed at the Au(111) surface and the Au monatomic wire. These effects originate from some specific features of electronic density profile for metal nanowires: at short distances the electronic density of nanowires is higher compared with the (111) metal surfaces, while at larger separations it decreases more sharply.
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影响因子:
2.9
作者:
K. Rosso;J. Rustad
通讯作者:
J. Rustad
影响因子:
1.2
作者:
R. Nazmutdinov
通讯作者:
R. Nazmutdinov
DOI:
10.1063/1.3585956
发表时间:
2011
期刊:
The Journal of chemical physics
影响因子:
--
作者:
Germán J Soldano;E. Santos;W. Schmickler
通讯作者:
W. Schmickler
影响因子:
2.9
作者:
†‡ and Dimitri E. Khoshtariya;T. Dolidze;and Leonid D. Zusman;D. Waldeck
通讯作者:
D. Waldeck
影响因子:
4.5
作者:
A. Kuznetsov;R. Nazmutdinov;W. Schmickler
通讯作者:
W. Schmickler