ISSN:
1572-8838
Keywords:
cupric oxide
;
pH
;
powder
;
sodium sulfate
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Electrical Engineering, Measurement and Control Technology
Notes:
Abstract Electrochemical synthesis of cupric oxide powder (CuO) in alkaline sodium sulfate is of technological interest. As it is known that hydroxyl ions are needed for the formation of cupric oxide, according to the principal chemical reaction: Cu2+ + 2oH- → CuO+H2 The effect of pH (in the range from 7.50 to 10.80) on cupric oxide powder formation was investigated. Optimum conditions for cupric oxide powder synthesis, with respect to particle size, cell voltage, current efficiency and specific energy consumption were determined to be a pH7.5 and a current density of 4000Am−2. A significant effect of pH on the particle size and aggregation of the powder was confirmed by both galvanostatic measurements and particle size determination. The lowest powder particle sizes were obtained at pH7.5. Aggregation of powder particles at higher pH was also observed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1003478412414
Permalink