碳化支持金属有机框架衍生的Ni,Co硫化异构结构作为高效的OER和HER催化剂
Muhammad Ahsan Naseeb1, Maida Murtaza1, Komal Farooq1
1Department of Chemistry, Quaid-i-Azam University Islamabad-45320 Pakistan amir@qau.edu.pk waqaslishah1@hotmail.com.
Nanoscale advances
|July 24, 2025
概括
我们开发了新的/硫联合化,硫化和碳化异构结构,用于高效的电化学水分裂. 这种先进的材料展示了优越的进化反应性能和耐用性.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
背景情况:
- 碳化 (MoxC) 具有类似的电子结构和高电化学性能,使其对水分应用具有吸引力.
- 开发高效和耐用的电催化剂对于推进电化学水分技术至关重要.
研究的目的:
- 设计和合成新的多孔纳米结构/硫联合合的Ni,Co硫化物和碳化物异构结构.
- 评估这些异构结构在水分裂中的演化反应 (HER) 和氧演化反应 (OER) 的电催化性能.
主要方法:
- 通过封闭碳化合成MOF衍生的NiCo-MoxC纳米棒.
- 硫化NiCo-MoxC以形成NiPS-CoPS-MoxC异构结构.
- 使用循环电压测量和时电压测量等技术,对HER和OER性能进行电化学表征.
主要成果:
- 前体NiCo-MoxC对HER呈现较低的超电位 (153mV在酸中,157mV在中).
- 硫化NiPS-CoPS-MoxC显著提高了HER的性能,其超电位为75.2mV (酸) 和86.6mV ().
- NiPS-CoPS-MoxC也显示出有前途的OER活动,在10mA cm-2时超电位为184.5mV.
- 基于NCMCSP的电解器在12小时内显示出对整体水分的良好耐用性.
结论:
- 开发的/硫联合合的Ni,Co硫化物和碳化物异构结构是水分裂的高效电催化剂.
- 与前体材料相比,硫化策略显著提高了HER活性.
- 这些新的异构结构显示出高效和耐用的电化学水分应用的巨大潜力.
更多相关视频
08:40Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
3.7K
07:14Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
Published on: May 12, 2023
3.1K
相关概念视频
Catalysis
22.9K
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
22.9K
Metal-Ligand Bonds
19.3K
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...
19.3K
Properties of Organometallic Compounds
2.1K
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.
2.1K
Heterogeneous Catalysis
141
Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
141
