| [NiCl(P^N^P)]Cl.EtOH Pincer Complex as Electrocatalyst for H2 Production |
| کد مقاله : 1102-CNF |
| نویسندگان |
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محمدحسین حسینی کوپایی *1، سعید آباد2 1دانشگاه تربیت مدرسی شیمی معدنی 2دانشگاه صنعتی اصفهان |
| چکیده مقاله |
| This study describes the electrocatalytic, anti-cancer, and DFT studies of a nickel complex, [NiCl(P^N^P)]Cl.EtOH, including a P^N^P type pincer ligand (P^N^P = bis[(2-diphenylphosphino)ethyl]amine). The complex was characterized by FT-IR, UV-visible, 1H NMR, 13C NMR, and 31P NMR spectroscopies as well as single-crystal X-ray diffraction and CHN analysis. The electrocatalytic proton reduction was studied for the nickel complex in an organic solution. Cyclic voltammetry studies have shown that this complex is an efficient electrocatalyst for hydrogen evolution at the potential of the Ni(II/I) couple whit an increase in the current observed by voltammetry. Electrochemical methods are suitable to determine the potential of hydrogen evolution of Ni pincer complexes; thus, the electrocatalytic proton reduction activity of [Ni(P^N^P)Cl]Cl.EtOH was investigated in the presence of 1M HCl in anhydrous acetonitrile. As shown in Figure 5, the incremental addition of HCl solution (15, 65, 80, and 100 μL) renders the reduction wave of Ni2+/Ni+ couple. It leads to an increase in the current observed by voltammetry. This behavior is characteristic of electrocatalytic proton reduction and has been shown hydrogen production by [Ni(P^N^P)Cl]Cl.EtOH catalyst. Figure 6 has shown stability tests on [Ni(P^N^P)Cl]Cl.EtOH, which was evaluated by the chronoamperometry (i ~ t) technique. The data had shown that this complex is stable at a current density of -16 mA cm−2 and continues this sustainability for 300 s in the presence of 100 μL HCl. |
| کلیدواژه ها |
| PNP pincer / Homogeneous electrocatalysis/ HER/ nickel complex |
| وضعیت: چکیده برای ارائه به صورت پوستر پذیرفته شده است |