ABSTRACT

Catalytic effects of cupric ion (Cu²⁺) and zero-valent copper (Cu⁰) on ozonation in aqueous solution were discussed in this research using 1,4-dioxane as a radical probe. Ozonation with Cu⁰ enhanced 1,4-dioxane removal, whereas Cu²⁺ had no catalytic effect. Two initiation steps were proposed for the catalytic effect of Cu⁰; the corrosion of Cu⁰ by oxygen and ozone and a one-electron redox reaction of Cu⁰ with ozone. The former produced cuprous ion (Cu⁺) and the latter produced both Cu⁺ and ozonide ion (O₃˙⁻). Hydroxyl radicals (HO˙) was generated by the reaction of Cu⁺ with ozone and protonation of O₃˙⁻.

中文翻译：

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铜对水溶液中臭氧化的催化作用

摘要

以1，4-二恶烷为自由基探针，研究了铜离子（Cu ²⁺）和零价铜（Cu ⁰）对水溶液中臭氧氧化的催化作用。Cu ^0的臭氧化作用增强了1,4-二恶烷的去除，而Cu ²⁺没有催化作用。针对Cu ⁰的催化作用，提出了两个引发步骤; Cu的腐蚀⁰由氧和臭氧和Cu的单电子氧化还原反应⁰与臭氧。前者产生的亚铜离子（铜⁺）和产生的两个铜后者⁺和臭氧化物离子（O ₃ ˙ ^-）。羟基自由基（HO）是由Cu的反应所产生的⁺用的臭氧和质子化ö ₃ ˙ ^- 。