The role of carbonate as a catalyst of Fenton-like reactions in AOP processes: CO3•- as the active intermediate

被引:31
作者
Burg, Ariela [1 ]
Shamir, Dror [2 ]
Shusterman, Inna [3 ]
Kornweitz, Haya [4 ]
Meyerstein, Dan [3 ,4 ]
机构
[1] SCE, Dept Chem Engn, Beer Sheva, Israel
[2] Nucl Res Ctr Negev, IL-84190 Beer Sheva, Israel
[3] Ben Gurion Univ Negev, Dept Chem, IL-84105 Beer Sheva, Israel
[4] Ariel Univ, Dept Biol Chem, Ariel, Israel
关键词
ORANGE II DEGRADATION; OXIDATIVE-DEGRADATION; HYDROGEN-PEROXIDE; AMBIENT CONDITIONS; ORGANIC-DYES; METAL-ION; H2O2; COMPLEXES; MECHANISM; SYSTEM;
D O I
10.1039/c4cc05852f
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Kinetic and DFT results for the carbonate catalysed Co(H2O)(6)(2+) + H2O2 Fenton-like reaction suggest a mechanism involving the formation of a cyclic transient, cyclic-(CO4)Co-II(OOH)(H2O)(2)(-) that decomposes into Co-II(H2O)(OOH)(OH)(2) + CO3 center dot-, i.e. no OH center dot radicals are involved. Plausible biological implications are pointed out.
引用
收藏
页码:13096 / 13099
页数:4
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