Bridging the pressure gap in surface science at the atomic level:: H/Cu(110)

被引：84

作者：

Österlund, L

Rasmussen, PB

Thostrup, P

Lægsgaard, E

Stensgaard, I

Besenbacher, F ^{[1
]}

机构：

[1] Aarhus Univ, Inst Phys & Astron, DK-8000 Aarhus C, Denmark

[2] Aarhus Univ, CAMP, DK-8000 Aarhus, Denmark

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.86.460

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The structural response of the Cu(110) surface to H-2 gas pressures ranging from 10(-13) to 1 bar is studied using a novel high-pressure scanning tunneling microscope (HP-STM). We find that at H-2 pressures larger than 2 mbar the Cu(110) surface reconstructs into the (1 X 2) "missing-row" structure. From a quantitative analysis of the pressure dependence of the surface reconstruction, we conclude that Cu(110) responds identically to hydrogen at ultrahigh vacuum conditions and at atmospheric pressures. From the HP-STM data, we extract refined values for the adsorption and desorption rate constants.

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页码：460 / 463

页数：4

相关论文

共 22 条

[1] ADSORPTION AND DESORPTION-KINETICS IN THE SYSTEMS H-2/CU(111), H-2/CU(110) AND H-2/CU(100) [J].

ANGER, G ;

WINKLER, A ;

RENDULIC, KD .

SURFACE SCIENCE, 1989, 220 (01) :1-17

[2] Design of a surface alloy catalyst for steam reforming [J].

Besenbacher, F ;

Chorkendorff, I ;

Clausen, BS ;

Hammer, B ;

Molenbroek, AM ;

Norskov, JK ;

Stensgaard, I .

SCIENCE, 1998, 279 (5358) :1913-1915

[3] OXYGEN-CHEMISORPTION ON METAL-SURFACES - GENERAL TRENDS FOR CU, NI AND AG [J].

BESENBACHER, F ;

NORSKOV, JK .

PROGRESS IN SURFACE SCIENCE, 1993, 44 (01) :5-66

[4] Direct observations of changes in surface structures by scanning tunneling microscopy [J].

Besenbacher, F. ;

Sprunger, P. T. ;

Ruan, L. ;

Olesen, L. ;

Stensgaard, I. ;

Laegsgaard, E. .

TOPICS IN CATALYSIS, 1994, 1 (3-4) :325-341

[5] STICKING, ADSORPTION, AND ABSORPTION OF ATOMIC-H ON CU(110) [J].

BISCHLER, U ;

SANDL, P ;

BERTEL, E ;

BRUNNER, T ;

BRENIG, W .

PHYSICAL REVIEW LETTERS, 1993, 70 (23) :3603-3606

[6]

CAMPBELL CT, 1992, ACS SYM SER, V482, P130

[7] THE DISSOCIATIVE ADSORPTION OF H-2 AND D2 ON CU(110) - ACTIVATION BARRIERS AND DYNAMICS [J].

CAMPBELL, JM ;

CAMPBELL, CT .

SURFACE SCIENCE, 1991, 259 (1-2) :1-17

[8] NEW MECHANISMS FOR CHEMISTRY AT SURFACES [J].

CEYER, ST .

SCIENCE, 1990, 249 (4965) :133-139

[9] Role of steps in N2 activation on Ru(0001) [J].

Dahl, S ;

Logadottir, A ;

Egeberg, RC ;

Larsen, JH ;

Chorkendorff, I ;

Törnqvist, E ;

Norskov, JK .

PHYSICAL REVIEW LETTERS, 1999, 83 (09) :1814-1817

[10] Bridging the pressure and materials gaps: High pressure sum frequency generation study on supported Pd nanoparticles [J].

Dellwig, T ;

Rupprechter, G ;

Unterhalt, H ;

Freund, HJ .

PHYSICAL REVIEW LETTERS, 2000, 85 (04) :776-779