Electroreduction of nitrite catalyzed by a dinuclear ruthenium phthalocyanine modified graphite electrode

被引：7

作者：

Ebadi, M ^{[1
]}

Lever, ABP ^{[1
]}

机构：

[1] York Univ, Dept Chem, Toronto, ON M3J 1P3, Canada

来源：

JOURNAL OF PORPHYRINS AND PHTHALOCYANINES | 2003年 / 7卷 / 08期

关键词：

ruthenium phthalocyanine; surface modified electrode; nitrite; hydroxylamine; nitrous oxide;

D O I：

10.1142/S1088424603000665

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The electrocatalytic reduction of nitrite on a dinuclear ruthenium phthalocyanine (RuPc)(2) modified electrode is studied, using cyclic voltammetry (cyclic voltammogram), rotating disc electrode (RDE) and ring-disc electrode (RRDE) techniques. The products of nitrite reduction are ammonia, nitrous oxide, and hydroxylamine. Depending on the experimental conditions, ammonia or nitrous oxide is formed as the main product. The initial step in the electroreduction of nitrite catalyzed by (RuPc)(2) is a one electron Ru-II / Ru-I process, followed by coordination of NO2- to the metal center. Formation of a nitrosyl complex prior to the electroreduction does not occur. A suitable mechanism is proposed by analyzing the rate equation and the Tafel slope. Copyright (C) 2003 Society of Porphyrins & Phthalocyanines.

引用

收藏

页码：529 / 539

页数：11

相关论文

共 64 条

[1] KINETICS STUDIES OF OXYGEN REDUCTION IN ACID-MEDIUM ON NOVEL SEMICONDUCTING TRANSITION-METAL CHALCOGENIDES [J].

ALONSOVANTE, N ;

TRIBUTSCH, H ;

SOLORZAFERIA, O .

ELECTROCHIMICA ACTA, 1995, 40 (05) :567-576

[2] REACTIVITY OF COORDINATED NITROSYLS .4. ONE-ELECTRON REDUCTION OF RUTHENIUM NITROSYLPENTAAMMINE(3+) ION IN AQUEOUS-SOLUTION [J].

ARMOR, JN ;

HOFFMAN, MZ .

INORGANIC CHEMISTRY, 1975, 14 (02) :444-446

[3] Dissimilatory nitrite and nitric oxide reductases [J].

Averill, BA .

CHEMICAL REVIEWS, 1996, 96 (07) :2951-2964

[4]

BARD AJ, 1980, ELECTROCHEMICAL METH, P519

[5] ELECTROCATALYTIC REDUCTION OF NITRITE TO AMMONIA BASED ON A WATER-SOLUBLE IRON PORPHYRIN [J].

BARLEY, MH ;

TAKEUCHI, KJ ;

MEYER, TJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1986, 108 (19) :5876-5885

[6] ELECTROCATALYTIC REDUCTION OF NITRITE TO NITROUS-OXIDE AND AMMONIA BASED ON THE N-METHYLATED, CATIONIC IRON PORPHYRIN COMPLEX [FEIII(H2O) (TMPYP)]5+ [J].

BARLEY, MH ;

RHODES, MR ;

MEYER, TJ .

INORGANIC CHEMISTRY, 1987, 26 (11) :1746-1750

[7] Synthesis and axial ligand substitution chemistry of Ru(TTP)(NO)X. Structures of Ru(TTP)(NO)X (X = ONO, OH) [J].

Bohle, DS ;

Hung, CH ;

Smith, BD .

INORGANIC CHEMISTRY, 1998, 37 (22) :5798-5806

[8] AQUEOUS NITROSYLIRON(II) CHEMISTRY .1. REDUCTION OF NITRITE AND NITRIC-OXIDE BY IRON(II) AND (TRIOXODINITRATO)IRON(II) IN ACETATE BUFFER - INTERMEDIACY OF NITROSYL HYDRIDE [J].

BONNER, FT ;

PEARSALL, KA .

INORGANIC CHEMISTRY, 1982, 21 (05) :1973-1978

[9] ELECTROPHILIC BEHAVIOR OF NITROSYLS - PREPARATION AND REACTIONS OF 6-CO-ORDINATE RUTHENIUM TETRA(PYRIDINE) NITROSYL COMPLEXES [J].

BOTTOMLEY, F ;

MUKAIDA, M .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1982, (10) :1933-1937

[10] Further structural information on the intra- and interunit contacts in dimeric ruthenium phthalocyanine [J].

Caminiti, R ;

Donzello, MP ;

Ercolani, C ;

Sadun, C .

INORGANIC CHEMISTRY, 1999, 38 (13) :3027-3029

← 1 2 3 4 5 6 7 →