INSITU SCANNING TUNNELING MICROSCOPY OF PLATINUM (111) SURFACE WITH THE OBSERVATION OF MONATOMIC STEPS

被引：208

作者：

ITAYA, K ^{[1
]}

SUGAWARA, S ^{[1
]}

SASHIKATA, K ^{[1
]}

FURUYA, N ^{[1
]}

机构：

[1] YAMANASHI UNIV,FAC ENGN,DEPT APPL CHEM,KOFU,YAMANASHI 400,JAPAN

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS | 1990年 / 8卷 / 01期

关键词：

D O I：

10.1116/1.576378

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In situ scanning tunneling microscopy was applied to single-crystal platinum 111) surfaces both before and after electrochemical potential cycling in an aqueous sulfuric acid solution. Steps observed on a Pt (111) facet were usually located on nearly parallel straight lines or on the directions forming an angle of close to 600 as expected for a surface with threefold symmetry. The height of each step was in accord with the monatomic step height of 0.238 nm on the Pt (Pt (surface. Randomly oriented islands a few atoms in height were clearly observed on the terraces after five potential cyclings. It was suggested that Pt adatoms produced by the reduction of the oxide are coagulated on the terraces. © 1990, American Vacuum Society. All rights reserved.

引用

页码：515 / 519

页数：5

共 24 条

[1] AN ELECTRON-MICROSCOPIC INVESTIGATION OF THE ELECTROCHEMICAL FACETING OF PLATINUM [J].

CANULLO, J ;

UCHIDA, Y ;

LEHMPFUHL, G ;

TWOMEY, T ;

KOLB, DM .

SURFACE SCIENCE, 1987, 188 (03) :350-363

[2] ELECTROCHEMICAL STUDY OF THE INITIAL SURFACE CONDITION OF PLATINUM SURFACES WITH (100) AND (111) ORIENTATIONS [J].

CLAVILIER, J ;

ARMAND, D ;

WU, BL .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1982, 135 (01) :159-166

[3] SCANNING TUNNELING MICROSCOPY OF PROCESSES AT LIQUID SOLID INTERFACES [J].

DRAKE, B ;

SONNENFELD, R ;

SCHNEIR, J ;

HANSMA, PK .

SURFACE SCIENCE, 1987, 181 (1-2) :92-97

[4] SCANNING TUNNELING MICROSCOPIC STUDIES OF PLATINUM-ELECTRODE SURFACES [J].

FAN, FRF ;

BARD, AJ .

ANALYTICAL CHEMISTRY, 1988, 60 (08) :751-758

[5] HYDROGEN ADSORPTION ON PLATINUM SINGLE-CRYSTAL SURFACES [J].

FURUYA, N ;

KOIDE, S .

SURFACE SCIENCE, 1989, 220 (01) :18-28

[6] INSITU SCANNING TUNNELING MICROSCOPY OF THE ANODIC-OXIDATION OF HIGHLY ORIENTED PYROLYTIC-GRAPHITE SURFACES [J].

GEWIRTH, AA ;

BARD, AJ .

JOURNAL OF PHYSICAL CHEMISTRY, 1988, 92 (20) :5563-5566

[7] INSITU SCANNING TUNNELING MICROSCOPY STUDIES OF THE UNDERPOTENTIAL DEPOSITION OF LEAD ON AU(111) [J].

GREEN, MP ;

HANSON, KJ ;

SCHERSON, DA ;

XING, X ;

RICHTER, M ;

ROSS, PN ;

CARR, R ;

LINDAU, I .

JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (06) :2181-2184

[8] ELECTROCHEMISTRY AT WELL-CHARACTERIZED SURFACES [J].

HUBBARD, AT .

CHEMICAL REVIEWS, 1988, 88 (04) :633-656

[9] INSITU SCANNING TUNNELING MICROSCOPY FOR PLATINUM SURFACES IN AQUEOUS-SOLUTIONS [J].

ITAYA, K ;

SUGAWARA, S ;

HIGAKI, K .

JOURNAL OF PHYSICAL CHEMISTRY, 1988, 92 (23) :6714-6718

[10] SCANNING TUNNELING MICROSCOPE FOR ELECTROCHEMISTRY - A NEW CONCEPT FOR THE INSITU SCANNING TUNNELING MICROSCOPE IN ELECTROLYTE-SOLUTIONS [J].

ITAYA, K ;

TOMITA, E .

SURFACE SCIENCE, 1988, 201 (03) :L507-L512

← 1 2 3 →