Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

391
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
391
Precipitation and Co-precipitation01:17

Precipitation and Co-precipitation

2.1K
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
2.1K
Electrodeposition01:08

Electrodeposition

719
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
719
Extraction: Advanced Methods00:56

Extraction: Advanced Methods

535
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
535

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

3D-Confined Zn Storage via Nitrogen-Doped Bamboo-Derived Hard Carbon Enables Stable and Kinetically Enhanced Zn Anodes.

ACS applied materials & interfaces·2026
Same author

Roll-to-roll fabrication of integrated cathodes enabled by asymmetric dual-atom catalysts for bipolar stacking ampere-hour-scale Zn-air batteries.

Chemical science·2025
Same author

Electrochemical upcycling biomass-derived methyl 2-furoate and CO<sub>2</sub> into monomers for recyclable polyesters.

Chemical communications (Cambridge, England)·2025
Same author

Pt-Decorated NiMo/Carbon Hybrid Catalysts for High-Current-Density Hydrogen Evolution: Synergistic Electronic Modulation and Industrial Application Potential.

Chemistry (Weinheim an der Bergstrasse, Germany)·2025
Same author

Rational Synthesis of Isomeric Graphdiyne Frameworks toward Single-Ruthenium Catalysts and High-Performance Nitrogen Reduction.

Advanced materials (Deerfield Beach, Fla.)·2025
Same author

Anion-Exchange Strategy for Ru/RuO<sub>2</sub>-Embedded N/S-<i>Co</i>-Doped Porous Carbon Composites for Electrochemical Nitrogen Fixation.

Polymers·2025

相关实验视频

Updated: Sep 14, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

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

Published on: April 10, 2018

18.4K

对CO2减少在酸性介质中的铜表面的界面扩散-反应合策略.

Xinyu Chai1, Pengfei Shi2,3, Jinyu Zhao2

  • 1State Key Laboratory of Green Papermaking and Resource Recycling, School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai, 200240, China.

Angewandte Chemie (International ed. in English)
|July 25, 2025
PubMed
概括

研究人员开发了一种具有强极化层的新型铜催化剂,用于在酸性介质中有效的二氧化碳电还原反应 (CO2RR). 这一突破实现了高的C2+产品选择性和稳定性,克服了之前在CO2转换方面的局限性.

关键词:
酸性介质是一种酸性介质.青色素是一种青色素.扩散动力学的扩散动力学.易斯基地 易斯基地两极化的偏化

更多相关视频

In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework
11:38

In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework

Published on: February 1, 2020

16.2K
A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction
09:20

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

Published on: January 26, 2016

15.5K

相关实验视频

Last Updated: Sep 14, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
10:57

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

Published on: April 10, 2018

18.4K
In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework
11:38

In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework

Published on: February 1, 2020

16.2K
A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction
09:20

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

Published on: January 26, 2016

15.5K

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
  • 催化剂是一种催化剂.

背景情况:

  • 传统的中性/性溶液中的二氧化碳电还原 (CO2RR) 由于二碳酸盐的积累而面临低效率.
  • 酸性介质中的CO2RR提供了一个替代方案,但仍然需要提高转化效率.
  • 在酸中开发有效的CO2RR催化剂对于可持续的化学生产至关重要.

研究的目的:

  • 在酸性介质中开发一种新型的CO2RR电极,以提高效率和选择性.
  • 研究强极化层影响二氧化碳扩散和反应动力学的机制.
  • 通过界面工程建立一个新的战略来提高CO2RR性能.

主要方法:

  • 用sp3混合 (sp3-N) 丰富的青基聚合物修改的铜 (Cu) 电极的制造.
  • 在酸性介质中对CO2RR进行修改的电极的电化学表征.
  • 在现场进行光谱研究,探测反应中间体和微环境.
  • 密度函数理论 (DFT) 计算以阐明反应机制和能量障碍.

主要成果:

  • 经过修改的Cu电极在200 mA cm-2.2时实现了近84%的高C2法拉代效率.
  • 电极表现出长期稳定性,运行超过40小时,这是酸性CO2RR的记录.
  • 在现场实验显示,极化层增强了当地的CO2/H2O比率,并稳定了*CO中间体.
  • 理论计算证实,极化层降低了C-C合器的能量屏障.

结论:

  • 在Cu电极上有一个强大的极化层,在酸性介质中显著提高了CO2RR的性能.
  • 富含sp3-N的青聚合物充当易斯基,促进CO2扩散并稳定关键中间体.
  • 本文介绍了高选择性CO2RR的有效界面扩散-反应合策略.