Reactivity of supported platinum nanoclusters studied by in situ GISAXS: clusters stability under hydrogen

被引：68

作者：

Winans, Randall E.

Vajda, Stefan

Ballentine, Gregory E.

Elam, Jeffrey W.

Lee, Byeongdu

Pelline, Michael J.

Seifert, Soenke

Tikhonov, George Y.

Tomczyk, Nancy A.

机构：

[1] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA

[2] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA

[3] Argonne Natl Lab, Ctr Nanoscale Mat, Div Energy Syst, Argonne, IL 60439 USA

[4] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

来源：

TOPICS IN CATALYSIS | 2006年 / 39卷 / 3-4期

关键词：

platinum; supported clusters; size-selection; sintering; thermal stability; aggregation; support effect; atomic layer deposition; ALD film; GISAXS; hydrogen;

D O I：

10.1007/s11244-006-0050-5

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

This paper is an initial study of the reactivity and thermal stability of atomic platinum clusters supported on Al2O3/SiO2/Si(100) as a function of the thickness of the alumina film and presence of hydrogen. Extremely high thermal stability of Pt7-10 clusters in vacua as well as in the presence of hydrogen is observed on SiO2/Si(100) coated with six cycles of Al2O3 film prepared by an atomic layer deposition technique.

引用

页码：145 / 149

页数：5

共 22 条

[1] The preparation and characterisation of nanometre platinum colloids on silicon wafers as model catalysts [J].