Structure and substitution effects of iron complexes of dibenzotetraaza[14] annulene on oxygen reduction catalysis

被引：0

作者：

Asahi, Masafumi ^{[1
]}

Yamazaki, Shin-ichi ^{[1
]}

Itoh, Shinobu ^{[2
]}

Ioroi, Tsutomu ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Res Inst Electrochem Energy, Dept Energy & Environm, 1-8-31 Midorigaoka, Ikeda, Osaka 5638577, Japan

[2] Osaka Univ, Grad Sch Engn, Dept Mol Chem, Div Appl Chem, 2-1 Yamada Oka, Suita, Osaka 5650871, Japan

来源：

INORGANICA CHIMICA ACTA | 2024年 / 572卷

关键词：

Cathode catalyst; Iron complex; Nitro-substitution; N; 4-macrocycle; Tetraaza[14]annulene; Oxygen reduction reaction; CYTOCHROME-C-OXIDASE; METAL PHTHALOCYANINES; O-2; REDUCTION; ELECTROCATALYSIS; REDOX; MECHANISM; LIGANDS; COBALT; DFT; FE;

D O I：

10.1016/j.ica.2024.122291

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Oxygen reduction reactions of iron complexes supported by unsubstituted dibenzotetraaza[14]annulene and its dinitro derivative at GC electrodes modified with carbon black were investigated. The dinitro derivative had an onset potential (0.98 V) in a 0.1 M NaOH aqueous solution. Its higher ORR activity could be attributed to the increase effect of the FeIII/FeII redox potential due to the strong electron-withdrawing effect of the nitro substituents. In addition, the carbon / dinitro-derivative composite generated lower amounts of hydrogen peroxide (an intermediate oxidant) and the ORR at the composite was faster compared to the iron phthalocyanine (a benchmark catalyst).

引用

页数：6

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