SCANNING-TUNNELING-MICROSCOPY INVESTIGATIONS OF COLLOIDAL SILVER - SURFACE-STRUCTURE AND AGGREGATION BEHAVIOR INDUCED BY CHLORION

被引：4

作者：

FANG, Y ^{[1
]}

BAI, CL ^{[1
]}

WEI, Y ^{[1
]}

TANG, YQ ^{[1
]}

机构：

[1] ACAD SINICA,INST CHEM,BEIJING 100080,PEOPLES R CHINA

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1995年 / 34卷 / 8A期

关键词：

SILVER COLLOID; SURFACE STRUCTURE; AGGREGATION BEHAVIOR; SCANNING TUNNELING MICROSCOPY; TRANSMISSION ELECTRON MICROSCOPY;

D O I：

10.1143/JJAP.34.4171

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The surface structure and aggregation behavior induced by NaCl of colloidal silver particles have been investigated by scanning tunneling microscopy (STM) and transmission electron microscopy (TEM). The TEM and STM results clearly revealed that the yellow silver colloid consists of nanometer-scale particles with sizes ranging from 5 to 15 nm in diameter. In the case of STM images of the Ag particles, Rie found that the Ag particles were firmly attached to the highly oriented pyrolitic graphite (HOPG) surfaces. Moreover, STM images with up to atomic resolution showed that the surfaces of the silver particles are not very flat, however, individual adatoms on the Ag surfaces can be distinguished. Furthermore, the change of the aggregation state of Ag colloids induced by the addition of NaCl, from primary dispersed grains to rodlike clusters, was also demonstrated by absorption spectroscopy, TEM and STM.

引用

页码：4171 / 4175

页数：5

共 25 条

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