Related Products of 119-91-5, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 119-91-5, Name is 2,2′-Biquinoline, SMILES is C1(C2=NC3=CC=CC=C3C=C2)=NC4=CC=CC=C4C=C1, belongs to catalyst-ligand compound. In a article, author is Ji, Jungyeon, introduce new discover of the category.
The effects of cobalt phthalocyanine and polyacrylic acid on the reactivity of hydrogen peroxide oxidation reaction and the performance of hydrogen peroxide fuel cell
A catalyst capable of high performance and good durability is developed for use in anode of flow-type membraneless hydrogen peroxide fuel cells (HPFCs). For that, cobalt phthalocyanine (CoPc) is immobilized onto reduced graphene oxide (rGO) linked to polyacrylic acid (PAA) surface modifier (rGO/PAA/CoPc). CoPc moiety containing PAA is tightly immobilized due to physical entrapment, axial ligand and stabilization of intermediates. According to evaluations, the amount of CoPc immobilized in rGO/PAA/CoPc is twice than that in rGO/CoPc because rGO and CoPc are weakly connected by 7C -7C conjugation without PAA acting as axial ligand to form coordinate bond with Co core within CoPc. In rGO/PAA/CoPc, current density for hydrogen peroxide oxidation reaction (HPOR) is 2.7 times higher than that measured in rGO/CoPc due to axial ligand role of PAA activating two HPOR pathways, wheras rGO/CoPc is only linked to one HPOR pathway. Even in stability test, rGO/PAA/CoPc preserves 90.0% of its initial HPOR current density, while that of Ni bulk is decreased by 30.6%. When performance of HPFC using rGO/PAA/CoPc is measured with a low concentration of H2O2 (0.1 mol L-1) of under physiological condition, its maximum power density (72.1 +/- 2.68 mu Wcm(2)) is better than that of HPFC using rGO/CoPc (38.3 +/- 0.20 mu Wcm(2)).
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Reference:
Metal catalyst and ligand design,
,Ligand Template Strategies for Catalyst Encapsulation – NCBI