从金属有机框架中获得的化氧化物,用于大电流密度的水分离
Yizhong Zou1, Wen-Da Zhang1, Ming Chen1
1Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China.
Journal of colloid and interface science
|September 14, 2023
概括
在这项研究中,从金属有机框架 (MOF) 中设计了化的氧化物. 基于酸盐的MOF衍生物显示出优越的表面性能和优异的双功能催化活性,用于水分裂.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 纳米技术 纳米技术
背景情况:
- 金属有机框架 (MOF) 结构和衍生金属氧化物特性之间的关系未得到充分研究.
- 定制MOF前体是控制MOF衍生材料特性的关键.
研究的目的:
- 研究MOF预组织如何影响衍生金属氧化物的形态,表面和催化活性.
- 从不同的Co-MOF前体中合成结构工程的 (Ru) 化氧化物.
主要方法:
- 合成两种类型的基于的MOF,具有不同的协调配置.
- 从这些MOF中提取的Ru-doped氧化物的制备.
- 表面性质的表征,包括湿度和氧气空缺.
- 对进化反应 (HER) 和氧进化反应 (OER) 的电催化评价.
主要成果:
- 一种以氧化酸盐为基础的MOF衍生的Ru-doped氧化物 (OX-Co3O4-Ru) 呈现出增强的表面可湿性和增加的氧空缺,与化物 imidazolate框架-67衍生的对应物相比.
- OX-Co3O4-Ru在1.0M KOH中表现出100mA cm−2的HER (49mV超电位) 和OER (286mV超电位) 对HER (49mV超电位) 和OER (286mV超电位) 的双功能催化活性.
- 这种催化剂在1.71V时实现了500mAcm-2的高电流密度,使得整体水分离具有强大的稳定性.
结论:
- MOFs的预先组织的协调结构显著影响衍生金属氧化物的特性.
- OX-Co3O4-Ru是一种高效的双功能催化剂,用于整体的水分离,展示了能源应用的潜力.
- MOF模板合成为先进的电催化材料提供了一条可行的途径.
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
3.6K
05:47Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
Published on: August 7, 2018
7.7K
相关概念视频
02:51Metal-Ligand Bonds
20.9K
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...
20.9K
02:58Crystal Field Theory - Octahedral Complexes
26.7K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
26.7K