Catalytic activity of Au nanoparticles

被引：762

作者：

Hvolbaek, Britt ^{[1
]}

Janssens, Ton V. W.

Clausen, Bjerne S.

Falsig, Hanne

Christensen, Claus H.

Norskov, Jens K.

机构：

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

[2] Haldor Topsoe Res Labs, DK-2800 Lyngby, Denmark

[3] Tech Univ Denmark, NanoDTU, Dept Chem, Ctr Sustainable & Green Chem, DK-2800 Lyngby, Denmark

来源：

NANO TODAY | 2007年 / 2卷 / 04期

关键词：

D O I：

10.1016/S1748-0132(07)70113-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Au is usually viewed as an inert metal, but surprisingly it has been found that Au nanoparticles less than 3-5 nm in diameter are catalytically active for several chemical reactions. We discuss the origin of this effect, focusing on the way in which the chemical activity of Au may change with particle size. We find that the fraction of low-coordinated Au atoms scales approximately with the catalytic activity, suggesting that atoms on the corners and edges of Au nanoparticles are the active sites. This effect is explained using density functional calculations.

引用

页码：14 / 18

页数：5

共 102 条

[81] The production of propene oxide: Catalytic processes and recent developments [J].

Nijhuis, TA ;

Makkee, M ;

Moulijn, JA ;

Weckhuysen, BM .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2006, 45 (10) :3447-3459

[82] The electronic structure effect in heterogeneous catalysis [J].

Nilsson, A ;

Pettersson, LGM ;

Hammer, B ;

Bligaard, T ;

Christensen, CH ;

Norskov, JK .

CATALYSIS LETTERS, 2005, 100 (3-4) :111-114

[83] Au deposits on graphite:: On the nature of high desorption peaks in CO thermal desorption spectra [J].

Nowitzki, T. ;

Nickut, P. ;

Deiter, C. ;

Wollschlaeger, J. ;

Al-Shamery, K. ;

Baeumer, M. .

SURFACE SCIENCE, 2006, 600 (18) :3595-3599

[84] Direct production of hydrogen peroxide from H2 and O2 over highly dispersed Au catalysts [J].

Okumura, M ;

Kitagawa, Y ;

Yamagcuhi, K ;

Akita, T ;

Tsubota, S ;

Haruta, M .

CHEMISTRY LETTERS, 2003, 32 (09) :822-823

[85] Chemical vapor deposition of gold on Al2O3, SiO2, and TiO2 for the oxidation of CO and of H2 [J].

Okumura, M ;

Nakamura, S ;

Tsubota, S ;

Nakamura, T ;

Azuma, M ;

Haruta, M .

CATALYSIS LETTERS, 1998, 51 (1-2) :53-58

[86] Evaluation of the Au size effect:: CO oxidation catalyzed by Au/TiO2 [J].

Overbury, S. H. ;

Schwartz, Viviane ;

Mullim, David R. ;

Yan, Wenfu ;

Dai, Sheng .

JOURNAL OF CATALYSIS, 2006, 241 (01) :56-65

[87] Bonding trends and dimensionality crossover of gold nanoclusters on metal-supported MgO thin films [J].

Ricci, Davide ;

Bongiorno, Angelo ;

Pacchioni, Gianfranco ;

Landman, Uzi .

PHYSICAL REVIEW LETTERS, 2006, 97 (03)

[88] Adsorption of carbon monoxide on the gold(332) surface [J].

Ruggiero, C ;

Hollins, P .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1996, 92 (23) :4829-4834

[89] Low-temperature activity of Au/CeO2 for water gas shift reaction, and characterization by ADF-STEM, temperature-programmed reaction, and pulse reaction [J].

Sakurai, H ;

Akita, T ;

Tsubota, S ;

Kiuchi, M ;

Haruta, M .

APPLIED CATALYSIS A-GENERAL, 2005, 291 (1-2) :179-187

[90] When gold is not noble:: Nanoscale gold catalysts [J].

Sanchez, A ;

Abbet, S ;

Heiz, U ;

Schneider, WD ;

Häkkinen, H ;

Barnett, RN ;

Landman, U .

JOURNAL OF PHYSICAL CHEMISTRY A, 1999, 103 (48) :9573-9578

← 2 3 4 5 6 7 8 9 10 11 →