相关实验视频

Updated: May 25, 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

在高密度Ga─Y双原子催化剂上通过交叉调节进行尿素的电合成

Dechao Chen^1,2, Yimeng Cai¹, Yi Xiao¹

¹State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China.

Advanced materials (Deerfield Beach, Fla.)

|February 26, 2025

概括

一种新型的双原子催化剂有效地将二氧化碳 (CO2) 和酸盐 (NO3-) 转化为尿素,提供了一个可持续的替代品. 这一突破通过优化C-N合动力学来提高尿素电合成产量和效率.

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
可持续化学可持续化学

背景情况:

传统的工业尿素生产是能源密集型的,依赖于不可再生资源.
电化学转化CO2和NO3-为尿素提供了一个可持续的替代方案,但在产量,效率和动力学方面面临挑战.
开发高效的催化剂对于推进电化学C-N合技术至关重要.

研究的目的:

开发一种高密度的双原子催化剂,用于高效的电化学尿素合成.
为了研究CO2和NO3-.之间的C-N合机制.
提高尿素产率和法拉第克效率,以实现可持续的化学生产.

主要方法:

在,联合化碳基板上合成高密度-双原子催化剂 (Ga/Y-CNP).
电化学表征,包括循环电压测量和时测量.
现场光谱和理论计算以阐明反应机制.

主要成果:

该Ga/Y-CNP催化剂实现了41.9 mmol h-1 g-1的高尿素产率和22.1%的法拉第效率,在-1.4 V与RHE相比.
催化剂通过C-N合证明了通过C-N合有效地减少CO2和NO3.
现场研究和计算显示了Ga和Y站点之间的协同效应,优化了CO2减排和NO3转化.

结论:

开发的Ga/Y-CNP催化剂显著提高了尿素电合成性能.
双原子催化剂中相邻活性位点的交叉调节是操纵C-N合路径的可行策略.
这项工作提供了一种开创性的方法,用于从二氧化碳和NO3-中可持续地生产高价值化学品.

关键词:

在C─N合器.交叉调整交叉调整交叉调整双原子催化剂的使用尿素生产中的尿素生产.

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

Ammonia Synthesis at Low Pressure

Ammonia Synthesis at Low Pressure

Published on: August 23, 2017

相关概念视频

Catalysis

Catalysis

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.

Urea Cycle

Urea Cycle

The urea cycle describes how liver cells convert ammonia to urea. Ammonia is a toxic waste product of protein catabolism. Land animals must convert ammonia into the less toxic urea which can be safely eliminated by the kidneys through urine. Marine animals excrete ammonia directly, and the surrounding water dilutes the ammonia to safe levels.