Electrocatalytic Performance of Thiacalix[4]arene-based Co(II) Complex in Hydrogen Evolution Reaction

被引：0

作者：

El Moll, Hani ^{[1
]}

Alenezi, Khalaf M. ^{[1
]}

Haque, Ashanul ^{[1
]}

Humaidi, Jamal ^{[1
]}

Alshammari, Abdullah O. ^{[1
]}

Azzam, Eid M. S. ^{[1
]}

Soury, Raoudha ^{[1
]}

Abdulaziz, Fahad ^{[1
]}

Latif, Salman ^{[1
]}

Vranes, Milan ^{[2
]}

机构：

[1] Univ Hail, Coll Sci, Dept Chem, POB 2440, Hail 81451, Saudi Arabia

[2] Univ Novi Sad, Fac Sci, Dept Chem Biochem & Environm Protect, Trg Dositeja Obradovica 3, Novi Sad 21000, Serbia

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2022年 / 17卷 / 06期

关键词：

Thiacalix[4]arene; Cobalt(II) complex; Electrocatalysis; proton reduction; cyclic voltammetry; THIACALIXARENE;

D O I：

10.20964/2022.06.04

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The generic electron-rich thiacalix[4]arene bearing sulfur and oxygen coordinating donor atoms in the lower rim is underestimated as a pre-catalyst for the Hydrogen Evolution Reaction (HER). In addition, cobalt is a promising metal ion for many electrocatalytic applications, including HER. Herein, we report the electrocatalytic activity of a cobalt(II) compound based on thicalix[4]arene that was characterized by cyclic voltammetry (CV). The CV using the glassy carbon as a working electrode versus Ag/AgCl, show two reduction peaks at -0.582 V and -1.270 V for the two redox couples Co2+/Co+ and Co+/Co, respectively. The two-electron proton reduction into hydrogen in the presence of the catalyst and 5 equivalents (12.5 mM) of acetic acid show a noticeable shift of about 780 mV compared to the catalyst-free reaction and 200 mV compared to the second wave observed for the acid-free solution. Moreover, a maximum anodic peak current of 32 mu A was observed upon adding 30 equivalents (75 mM) of acetic acid.

引用

页数：9

共 22 条

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