To probe the reaction mechanism, we conducted a set of mechanistic studies. First, several propargylic compounds with different leaving groups1F(Boc),1G(Ac),1H(CO2Me) were prepared. The Cyclic Voltammetry (CV) experiments were performed to measure the reduction potential of these substrates1d,1F,...
However, the electrosynthesis of ethylene by the CO reduction reaction (CORR) has suffered from low selectivity and energy efficiency. Here we find that the recent strategy of increasing performance through use of highly alkaline electrolyte—which is very effective in CO2RR—fails in CORR and ...
Again, the catalytic mechanism can be divided into two half-reactions: (1) enzyme reduction at the quinone moiety (TPQ → TPQH2) by substrate followed by (2) reoxidation by molecular oxygen: (1)Eox+R–CH2–NH3+→Ered–NH3++R–CHO (2)Ered–NH3++O2+H2O→Eox+NH4++H2O2 ...
The enzymatic reactions of the blue copper oxidase,Rhuslaccase are discussed and the importance of dioxygen intermediates coordinated to the type 3 copper site in laccase is demonstrated. Based on the experimental evidence discussed in the paper a reaction scheme for laccase is given which requires O...
Development of CINMs with excellent Fenton-like and photothermal properties is a major research direction. Zhang et al. developed a copper-based metal-organic framework (Cu-DBC) that significantly enhanced ·OH production by photothermally enhanced Fenton-like reaction under NIR irradiation [127]. Yao...
摘要: The reaction of nitriles, containing a labile hydrogen, with copper salts at 70–150 proceeds as an oxidation-reduction reaction of one-electron transfer from the nitrile to Cu2+. A probable scheme of the process was proposed.DOI: 10.1007/BF00927484 年份: 1975 ...
However, higher temperature has been reported to cause poor synthesis of nanoparticles due to inactivation of biomolecules liable for the reduction of the iron precursor [76]. 5.5. Characterization of CuONPs Since the applications of CuONPs depend largely on their properties, the need for their ...
This work reports the preparation and electrochemical property of carbon-supported copper phthaloctyanine tetrasulfonic acid (CuPcTSA/C) for oxygen reduction reaction (ORR) in alkaline media. The catalyst was synthesized via a combined solvent-impregnation. For optimizing the electrocatalytic activity,...
It is intriguingly featured by the use of low cost and relatively low toxicity Cu/O2 reaction condition. Recent mechanistic studies have explored the activation of alkyne C–H bonds by a Cu(I)–Cu(II) synergistic process and substaniated the reduction of Cu(II) to Cu(I) through an ...
[135,136]. Copper entrance requires its prior reduction by cell surface metalloreductases, as Ctr1 mediates transport of Cu(I) only, whereas ceruloplasmin, which carries half of the copper in blood plasma, delivers it as Cu(II) to the cell membrane [137]. Copper uptake is regulated mainly...