Home
Resources
Publications
Cobalt Metallopeptide Electrocatalyst for the Selective Reduction of Nitrite to Ammonium

Cobalt Metallopeptide Electrocatalyst for the Selective Reduction of Nitrite to Ammonium

Yixing Guo, Jesse R Stroka, Banu Kandemir, Claire E Dickerson, Kara L Bren

J Am Chem Soc. 2018 Dec 12;140(49):16888-16892.

PMID: 30457856

Abstract:

A cobalt-tripeptide complex (CoGGH) is developed as an electrocatalyst for the selective six-electron, eight-proton reduction of nitrite to ammonium in aqueous buffer near neutral pH. The onset potential for nitrite reduction occurs at -0.65 V vs Ag/AgCl (1 M KCl). Controlled potential electrolysis at -0.90 V generates ammonium with a faradaic efficiency of 90 ± 3% and a turnover number of 3550 ± 420 over 5.5 h. CoGGH also catalyzes the reduction of the proposed intermediates nitric oxide and hydroxylamine to ammonium. These results reveal that a simple metallopeptide is an active functional mimic of the complex enzymes cytochrome c nitrite reductase and siroheme-containing nitrite reductase.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP12022025	Ammonium heptafluorotantalate(V)		12022-02-5	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: