相关实验视频

Updated: May 6, 2026

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Published on: January 22, 2015

从酸盐中电合成氨,使用自我激活的碳纤维纸张

Sai Zhang¹, Mengheng Dou², Mengdi Liu¹

¹Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, P.R. China.

Inorganic chemistry

|July 19, 2024

概括

商业碳纤维纸,通常是惰性的,在酸盐废物电还原过程中激活到氨. 这一突破为生产氨的可持续途径提供了高效率和新型活性催化场所.

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
环境化学环境化学

背景情况:

电化学酸盐降解为氨 (NO3RR) 对于循环管理至关重要.
现有的催化剂主要以金属为基础,限制了更广泛的应用.
碳材料通常被认为是电化学惰性电流收集器.

研究的目的:

为了研究商业碳纤维纸的电化学激活,用于酸盐废物再循环.
确定对碳材料上的NO3RR负责的活性部位和机制.
从酸盐废物中生产有价值的氨的可持续方法.

主要方法:

在工业电流密度下进行电化学酸盐减少实验.
在现场表征和理论计算 (DFT) 以确定活跃地点.
合NO3RR与空气剥离,用于产品分离和净化.

主要成果:

活性碳纤维纸实现了87.39%的NH3法拉代效率在300 mA cm-2下90小时.
NH3的生产率达到了1.22 mmol cm-2 h-1.
在现场形成的C-O-C氧功能组被确定为活性位点,降低能量障碍并增强动力学.

结论:

商业碳纤维纸可以激活,以有效的电化学酸盐转化为氨.
C-O-C 组是关键的活性部位,提供无金属的催化途径.
这项工作提出了一种可持续的方法,用于将酸盐废物转化为高价值的氨产品.

更多相关视频

Ammonia Synthesis at Low Pressure

Ammonia Synthesis at Low Pressure

Published on: August 23, 2017

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

相关概念视频

Inorganic Nitrogen Assimilation

Inorganic Nitrogen Assimilation

Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...