Pinpointing the active species of the Cu(DAT) catalyzed oxygen reduction reaction

Abstract

The activity of the 3,5-diamino-1,2,4-triazole copper system for the oxygen reduction reaction was found to originate from an electrodeposition rather than the parent complex.

Influence of the spatial distribution of copper sites on the selectivity of the oxygen reduction reaction

“…[16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] Additionally, several dinuclear complexes have been investigated to induce a cooperative effect during ORR catalysis. [35][36][37][38] We have recently shown that the mononuclear complex [Cu(tmpa)(solv)] + (Cu-tmpa, tmpa = tris(2-picolyl) amine) shows exceptionally high ORR catalytic performance with a turn-over frequency (TOF) of almost 2 million per second. 19,39 We showed that the reduction of oxygen to water proceeds via a two-step process in which hydrogen peroxide is formed as an obligatory intermediate product.…”

Fast Oxygen Reduction Catalyzed by a Copper(II) Tris(2‐pyridylmethyl)amine Complex through a Stepwise Mechanism

“…Theh omogeneity of the catalyst was established by electrochemical quartz crystal microbalance (EQCM) experiments,b oth under noncatalytic and catalytic conditions (see the Supporting Information). [13] Determination of the relationship between the catalytic current and the catalyst concentration would provide useful insight into the possible mechanism of the ORR. Owing to the low solubility of O 2 in most solvents,a queous or otherwise, either very high O 2 pressures or low catalyst concentrations must be used to avoid the O 2 mass-transport limitation.…”

1,2,4-Triazole Derivatives in Medicine and Pharmacy and Application Prospects

“…All complexes show greater activity for the inhibition of fungi than the Azocenol, which indicates the potential use of these complexes as antifungal agents. In addition, the In studies [20], a water-soluble diamino-1,2,4-triazole complex with complex ion Cu (II) was obtained, corresponding to the structure indicated in Figure 18. The Cu-triazole complex in solution is very unstable.…”

“…Figure 18. The structure of diamino-1,2,4-triazole complex with complex ion Cu (II) [20] Continuing the study of complex compounds [21], the authors investigated new Anderson-type polyoxometalates and organometallic complexes based on octamolybdates with triazole ligands. The basis for the creation of complexes included a combination with Co (II).…”