Removal of Cu⁺⁺ Ions from Aqueous Cu-EDTA Solution Using ZnO Nanopowder

Abstract:

Nanometer size zinc oxide (ZnO) powder was prepared by a novel “solution-combustion method (SCM)”, and it was used as a semiconductor photocatalyst to evaluate its photoreduction properties. Aqueous solution of heavy metal ions (Cu-EDTA) was used for the photocatalysis reaction under UV illumination. The result was then compared with other semiconductor photocatalyst powders such as titanium dioxide (TiO2) powder (P25; Degussa) and TiO2 powder prepared by a homogeneous precipitation process at low temperature (HPPLT). The zinc oxide nanopowder showed the highest removal rate of the Cu++ ions from the solution among the photocatalyst powders compared. The superior photoreduction ability of the ZnO nanopowder appears to be due to its excellent UV absorption capacity.

• Periodical: Materials Science Forum (Volumes 486-487)
• Pages: 510-513
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.486-487.510
• Online since: June 2005
• Authors: Ju Hyeon Lee, Byoung Sung Kim, Jae Chun Lee, Sung Park
• Keywords: Aqueous Solution, Metal Ion Removal, Solution Combustion Method, ZnO Nanopowder

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