Steady-state radiolysis study of the reductive dissolution of ultrasmall colloidal CuS

被引：24

作者：

Drummond, KM

Grieser, F ^{[1
]}

Healy, TW

Silvester, EJ

Giersig, M

机构：

[1] Univ Melbourne, Sch Chem, Adv Mineral Prod Res Ctr, Parkville, Vic 3052, Australia

[2] CSIRO, Div Minerals, Clayton, Vic 3168, Australia

[3] Hahn Meitner Inst, D-14109 Berlin, Germany

来源：

LANGMUIR | 1999年 / 15卷 / 20期

关键词：

D O I：

10.1021/la9816205

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The reduction of ultrasmall colloidal covellite (CuS) has been examined using 1,1'-bis(sulfonatopropyl)4,4'-bipyridinium radicals (ZV(-)) over the pH range 2.5-10. The corrosion process using this reductant is a one-electron-transfer process, producing colloidal Cu2S and H2S. It was observed that this process is partially reversible upon exposure of the irradiated sample to either elevated temperatures or air. In addition, at pH 2.5, the reaction was further complicated by the formation of molecular H-2. At pH 9 +/- 1 the reaction between ZV(-) and CuS ceased to be favorable.

引用

页码：6637 / 6642

页数：6

共 22 条

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