CHARACTERIZATION OF SURFACE-CHARGE OF METAL-OXIDES BY ADSORPTION OF TCNQ

被引：4
|
作者：
ESUMI, K [1 ]
MAGARA, K [1 ]
MEGURO, K [1 ]
机构：
[1] SCI UNIV TOKYO,INST COLLOID & INTERFACE SCI,SHINJUKU KU,TOKYO 162,JAPAN
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1991年 / 141卷 / 02期
关键词：
D O I：
10.1016/0021-9797(91)90354-B
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Zeta potentials of metal oxides such as alumina and titania by adsorption of 7,7,8,8-tetracyanoquinodimethane (TCNQ) from organic solvents were measured. The zeta potentials of their oxides in organic solvents only were decreased as follows: acetonitrile > ethyl acetate > 1,4-dioxane. Further, the zeta potentials decreased with increasing adsorbed amount of TCNQ and concentration of TCNQ anion radicals formed as a result of electron transfer from oxide surface to TCNQ. The mechanism of charge origin for these systems was discussed. © 1991.
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页码：578 / 580
页数：3
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