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制备了两种表面Schiff碱及其Cu~(2+)、Co~(2+)、Ni~(2+)、Zn~(2+)配合物,考察了它们对H_2O_2分解的催化性能,其活性顺序为:Co~(2+)>Cu~(2+)>Ni~(2+)>Zn~(2+),且与金属离子氧化还原电位有关。溶液的pH值增加有利于催化反应,有机配体的加入则对反应有所抑制。
Two kinds of surface Schiff bases and their Cu ~ (2 +), Co ~ (2 +), Ni ~ (2 +) and Zn ~ (2+) complexes were prepared and their catalytic properties for decomposition of H_2O_2 were investigated. The order of activity is: Co ~ (2 +)> Cu ~ (2 +)> Ni ~ (2 +)> Zn ~ (2+), which is related to the redox potential of metal ions. The increase of the pH value of the solution favors the catalytic reaction, while the addition of the organic ligand suppresses the reaction.