Category: pyridine-derivativesIn 2021 ,《Covalent immobilization of ruthenium polypyridyl complex on multi-walled carbon nanotube supports for oxygen evolution reaction in an alkaline solution》 was published in Journal of Power Sources. The article was written by Wu, Zhen-Yi; Zhang, Qian-Xin; Huang, Li-Jing; Xu, Yu-Jin; Tang, Ding-Liang. The article contains the following contents:
Electrocatalytic water splitting to realize the sustainable production of hydrogen is one of the key ways to gain renewable clean energy. The development of the ruthenium-terpyridine-bipyridine (bpyRutpy) complexes used as efficient homogeneous water oxidation catalysts is one of the currently hot research fields. All catalytic active sites of the homogeneous mol. catalyst are fully utilized, and show a high catalytic efficiency. However, the homogeneous mol. catalyst has some intrinsic shortages such as difficulty on separation, recovery and regeneration, and high cost. In view of this, we synthesized the multi-walled carbon nanotube (MWCNT)-based heterogeneous catalyst, MWCNT-bpyRutpy, by covalently bonding the ruthenium-based complex onto the carbon nanotubes, in order to achieve the maximum mol. catalytic efficiency of the complex. The synthesized catalyst is fully characterized by mass spectrometry, NMR spectroscopy, IR spectroscopy, UV-visible spectroscopy, photoelectron spectroscopy, Raman spectroscopy, and thermogravimetry. The formation of the nanocatalyst via fusing Ruthenium complexes to MWCNTs promotes the oxygen evolution reaction (OER) kinetics, enhances intrinsic activity, and increases the sp. surface area of electrochem. activity, and achieve excellent OER performance with a low overpotential of 436 mV at 10mAcm2, a low Tafel slope of 77.2 mV, and a relatively high turnover frequency (TOF) of 0.5833 s-1 at an overpotential of 400 mV. In the experiment, the researchers used 4,4′-Dimethyl-2,2′-bipyridine(cas: 1134-35-6Category: pyridine-derivatives)
4,4′-Dimethyl-2,2′-bipyridine(cas: 1134-35-6) is used in the synthesis of a series of o-phenanthroline-substituted ruthenium(II) complexes.Category: pyridine-derivatives Furthermore, 4,4′-Dimethyl-2,2′-bipyridine is used as a chemical Intermediate. It can be used for the determination of ferrous and cyanide compounds.