Department of Engineering 'Enzo Ferrari', University of Modena and Reggio Emilia, Via Vivarelli 10, 41125 Modena, Italy.
Department of Chemistry, University of Firenze, via della Lastruccia 3, 50019 Sesto Fiorentino, Firenze, Italy.
Molecules. 2020 Sep 1;25(17):3988. doi: 10.3390/molecules25173988.
Results are presented concerning the influence on the water splitting process of enantiopure tartaric acid present in bulk solution. Stainless steel and electrodeposited nickel are used as working electrode (WE) surface. The latter is obtained by electrodeposition on the two poles of a magnet. The influence and role played by the chiral compound in solution has been assessed by comparing the current values, in cyclic voltammetry (CV) experiments, recorded in the potential range at which oxygen evolution reaction (OER) occurs. In the case of tartaric acid and nickel WE a spin polarization of about 4% is found. The use of the chiral environment (bulk solution) and ferromagnetic chiral Ni electrode allows for observing the OER at a more favorable potential: About 50 mV (i.e., a cathodic, less positive, shift of the potential at which the oxygen evolution is observed).
本文介绍了手性酒石酸在本体溶液中对水分解过程的影响。使用不锈钢和电沉积镍作为工作电极（WE）表面。后者通过在磁铁的两极上电沉积获得。通过比较在析氧反应（OER）发生的电位范围内记录的循环伏安（CV）实验中的电流值，评估了溶液中手性化合物的影响和作用。在手性环境（本体溶液）和铁磁手性 Ni 电极的情况下，发现约有 4%的自旋极化。使用手性环境（本体溶液）和铁磁手性 Ni 电极可以观察到 OER 在更有利的电位下发生：约 50 mV（即，观察到氧气析出时的电位向阴极方向、更负方向移动）。
