在双金属Coni-Triazole金属-有机框架中的电化学创建的活性中心,用于增强氧气进化反应活性
Natchaya Phongsuk1, Kanyaporn Adpakpang1, Ladawan Pukdeejorhor1
1School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 555 Payupnai, Wangchan, Rayong, 21210, Thailand.
ChemPlusChem
|September 3, 2024
概括
这项研究探讨二金属--1,2,4- (CoNi-Tz) 用于电化学氧化水. 激活的CoNi-Tz表现出增强的催化活性,实现高效氧演化反应 (OER) 的低超电位.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
背景情况:
- 电化学氧化水对于可持续能源技术至关重要.
- 为氧化演化反应 (OER) 开发高效和成本效益的催化剂仍然是一个重大挑战.
- 双金属框架提供可调节的电子特性,以提高催化性能.
研究的目的:
- 为了研究双金属--1,2,4- (CoNi-Tz) 框架的电化学水氧化活性.
- 了解在电化学激活时产生的结构转变和活性位点.
- 与单金属和基准催化剂相比,评估激活CoNi-Tz的催化性能.
主要方法:
- CoNi-Tz框架的综合和描述.
- CoNi-Tz催化剂的电化学激活.
- 电化学测量包括超电位和OER的Tafel斜率测定.
- 与Co-Tz和二氧化 (IrO2) 催化剂的比较.
主要成果:
- 合成的CoNi-Tz具有活跃的四面体和电子介导的八面体中心.
- 电化学激活诱导中心的结构转变,产生丰富的活性位点.
- 激活的CoNi-Tz具有较低的OER超电位 (293 mV在10 mA cm−2) 和一个小的Tafel斜率 (49.98 mV dec−1).
- 活性化CoNi-Tz的性能超过了Co-Tz和IrO2.
结论:
- 电化学激活是一种有效的策略,可以增强OER的双金属CoNi-Tz的催化活性.
- 激活的CoNi-Tz框架为高效的水氧化提供了一个有前途的电催化剂.
- 这项工作有助于开发用于可再生能源应用的先进材料.
相关概念视频
02:51Metal-Ligand Bonds
20.6K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
20.6K
01:23Properties of Organometallic Compounds
962
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
962
02:44Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
10.0K
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
10.0K