相关实验视频

Updated: Jun 9, 2025

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Synthesis 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

生物质衍生碳支持的合金合金酸盐作为氧化物进化反应的高效电催化剂

Baoli Wang¹, Xiujiu Yang¹, Yan Chen¹

¹Haikou Marine Geological Survey Center, China Geological Survey, Haikou 571127, China.

Molecules (Basel, Switzerland)

|October 26, 2024

概括

研究人员将叶转化为多孔石墨碳 (GPLC),并将其与聚酸盐 (CoMoO4) 结合起来,制造出一种高度稳定的氧化演化反应 (OER) 电催化剂. 这种生物质衍生材料显示出出色的催化活性和废物回收利用潜力.

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:

为氧化演化反应 (OER) 开发高效的电催化剂对于能量转化技术至关重要.
来自生物质的碳材料提供了一个可持续的平台,用于催化剂的支持,因为他们的调节性质和低成本.
(Ananas comosus) 叶片代表了大量的,未被充分利用的废物流,有可能转化为功能性材料.

研究的目的:

使用废弃的叶合成一种新型的氧化和多孔石墨化碳复合物 (CoMoO4/GPLC).
为了评估COMoO4/GPLC复合物的氧化演化反应 (OER) 的电催化性能.
研究多孔石墨化碳支在增强CoMoO4纳米棒的催化活性和稳定性的作用.

主要方法:

用铁盐催化剂高温热解阿纳纳斯comosus叶子以产生多孔石墨化碳 (GPLC).
在GPLC支上的CoMoO4纳米棒的现场生长形成了CoMoO4/GPLC复合材料.
使用N2吸附-脱附异温和孔径尺寸分布分析,对复合材料的结构和表面积进行表征.
对OER性能进行电化学评估,包括超电位测量和长期稳定性测试.

主要成果:

合成的CoMoO4/GPLC复合物表现出具有较大的特定表面积的多孔结构,促进了电荷和反应物运输.
复合材料在OER的电流密度分别为10 mA cm-2和100 mA cm-2时显示出289 mV和399 mV的低超电位.
观察到非常好的稳定性,在30小时的连续OER运行后,电流密度仅下降3.2%.
在GPLC支持显著改善了电导率,质量传输,和暴露的活性点的CoMoO4催化剂.

结论:

来自阿纳纳斯comosus叶的GPLC有效地支持CoMoO4纳米棒,从而产生高性能OER电催化剂.
这项工作提出了一个可持续的战略,用于将农业废物转化为先进的电催化材料.
开发的CoMoO4/GPLC复合物显示出作为OER应用和生物质废物处理的潜在催化剂的潜力.

关键词:

在 CoMoO4 纳米化物中.电催化剂是一种电催化剂.氧气进化反应反应氧气进化反应水的分裂是水的分裂.

更多相关视频

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Published on: April 27, 2018

相关概念视频

Thermal and Photochemical Electrocyclic Reactions: Overview

Thermal and Photochemical Electrocyclic Reactions: Overview

Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.

Oxidation-Reduction Reactions

Oxidation-Reduction Reactions

Oxidation–Reduction Reactions

Redox Reactions

Redox Reactions

Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...

Redox Equilibria: Overview

Redox Equilibria: Overview

A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...