Multiple Reaction Paths for CO Oxidation on a 2D SnOx Nano-Oxide on the Pt(110) Surface: Intrinsic Reactivity and Spillover

被引：6

作者：

Zheng, Jia ^{[1
,2
]}

Busch, Michael ^{[5
]}

Artiglia, Luca ^{[3
,4
]}

Skala, Tomas ^{[6
]}

Rossmeisl, Jan ^{[7
]}

Agnoli, Stefano ^{[1
,2
]}

机构：

[1] Univ Padua, Dept Chem Sci, Via Marzolo 1, I-35131 Padua, Italy

[2] Univ Padua, INSTM UNIT, Via Marzolo 1, I-35131 Padua, Italy

[3] Paul Scherrer Inst, Lab Catalysis & Sustainable Chem, Forsch Str 111, CH-5232 Villigen, Switzerland

[4] Paul Scherrer Inst, Lab Environm Chem, Forsch Str 111, CH-5232 Villigen, Switzerland

[5] Tech Univ Denmark, Ctr Atom Scale Mat Design, Dept Phys, DK-2800 Lyngby, Denmark

[6] Charles Univ Prague, Fac Math & Phys, Dept Surface & Plasma Sci, V Holesovickach 2, CZ-18000 Prague, Czech Republic

[7] Univ Copenhagen, Nanosci Ctr, Dept Chem, Univ Pk 5, DK-2100 Copenhagen, Denmark

来源：

ADVANCED MATERIALS INTERFACES | 2019年 / 6卷 / 06期

关键词：

CO reactivity; density functional theory; nano-oxide; photoemission spectroscopy; scanning tunneling microscopy; OXYGEN-REDUCTION; ELECTROCATALYTIC APPLICATIONS; ELECTRONIC-STRUCTURE; ANODIC-OXIDATION; CARBON-MONOXIDE; H-2/CO MIXTURES; PLATINUM; ADSORPTION; ELECTROOXIDATION; METHANOL;

D O I：

10.1002/admi.201801874

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An interface stabilized SnOx/Pt(110) nano-oxide characterized by a c(2 x 4) surface reconstruction is prepared and characterized by low-energy electron diffraction (LEED), synchrotron radiation photoemission spectroscopy (SRPES), and scanning tunneling microscopy (STM). Based on the experimental data, atomic models for the nano-oxide are proposed and then validated by comparing the experimental results with the outcome of first-principle calculations. The reactivity of the nano-oxide toward CO is investigated, obtaining that the c(2 x 4) reconstruction efficiently oxidizes CO to CO2. The SnOx nano-oxide on the Pt(110) surface can act as a reservoir for oxygen that can diffuse on the adjacent Pt areas where it oxidizes CO. This spillover effect endows the SnOx/Pt(110) system with enhanced tolerance to CO poisoning.

引用

页数：9

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