Search research articles

ACERCA DE JoVE

Visión General Liderazgo Blog Centro de Ayuda JoVE

AUTORES

Proceso de Publicación Consejo Editorial Alcance y Políticas Revisión por Pares Preguntas Frecuentes Enviar

BIBLIOTECARIOS

Testimonios Suscripciones Acceso Recursos Consejo Asesor de Bibliotecas Preguntas Frecuentes

INVESTIGACIÓN

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archivo

EDUCACIÓN

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Centro de Recursos para Profesores Sitio de Profesores

Términos y Condiciones de Uso

Política de Privacidad

Videos de Conceptos Relacionados

Colloidal precipitates

Colloidal precipitates

The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...

Electrodeposition

Electrodeposition

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...

Coagulation

Coagulation

Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por

Same author

Imine-Based Covalent Organic Frameworks With Quaternary Ammonium Groups for Enhanced Conductivity in Anion Exchange Membranes.

Small (Weinheim an der Bergstrasse, Germany)·2026

Same author

Symmetry-Differentiated Oxygen-Vacancy Motifs Regulate Au-CeO<i><sub>x</sub></i> Interfaces for Selective Photocatalytic Ethane Production from CO<sub>2</sub>.

Journal of the American Chemical Society·2026

Same author

Diffraction anomalous fine structure pinpoints electrochemically active sites in robust heterojunctions.

Science advances·2026

Same author

Sonochemical boron incorporation enhances activity and durability of ruthenium oxide for acidic water oxidation.

Nature communications·2026

Same author

Electro-activation driven self-dispersion of PdCuAg nanoparticles for high-performance formic acid oxidation.

Chemical communications (Cambridge, England)·2026

Same author

A Multifunctional Integrated Triboelectric Nanogenerator via Electrospinning Fluorinated/Silanized Thermoplastic Polyurethane for Self-Powered Heating Self-Healing and Self-Cleaning.

ACS applied materials & interfaces·2026

Search research articles

Video Experimental Relacionado

Updated: Sep 28, 2025

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Published on: March 18, 2020

Ensamblaje de surfactante formado dinámicamente en la interfaz electro-electrolita electrificada que aumenta la

Wangxin Ge^1,2, Yuxin Chen³, Yu Fan¹

¹Key Laboratory for Ultrafine Materials of Ministry of Education, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.

Journal of the American Chemical Society

|April 5, 2022

Resumen

Los investigadores utilizaron surfactantes para controlar la interfaz durante la electrocatálisis, mejorando la reducción de dióxido de carbono a monóxido de carbono. Este método mejora la selectividad mediante la creación de un microambiente hidrofóbico-aerofílico.

Más Videos Relacionados

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

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

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

Published on: January 26, 2016

Videos de Experimentos Relacionados

Last Updated: Sep 28, 2025

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Published on: March 18, 2020

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

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

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

Published on: January 26, 2016

Área de la Ciencia:

La electroquímica
Ciencias de la superficie
Ciencias de los materiales

Sus antecedentes:

Las reacciones electrocatalíticas ocurren en la interfaz electrodo-electrolito, una región a nanoescala difícil de estudiar debido a la interferencia de electrolitos a granel y los cambios dinámicos impulsados por el potencial.
Comprender y controlar este microambiente interfacial es crucial para optimizar el rendimiento electrocatalítico.

Objetivo del estudio:

Investigar la respuesta dinámica impulsada por el potencial de sesgo del microambiente interfacial durante la electrocatálisis.
Elucidar el origen mecanicista de la selectividad catalítica en la electrorreducción de CO2.
Explorar el uso de tensioactivos catiónicos de amonio cuaternario como aditivos de electrolitos para modular la interfaz.

Principales métodos:

Co-reducción electroquímica de CO2 y H2O en electrodos de plata.
Espectroscopia vibratoria en el lugar.
Espectroscopia de impedancia electroquímica.
Simulaciones de dinámica molecular.

Principales resultados:

La estructura de los tensioactivos ha pasado de forma dinámica de ensamblaje aleatorio a ensamblaje ordenado con aumento del potencial de sesgo aplicado.
El conjunto ordenado de tensioactivos regulaba el agua interfacial, repelía el agua aislada y suprimía las estructuras de agua ordenadas.
Se promovió el enriquecimiento de CO2 en la interfaz electrificada, lo que condujo a un microambiente hidrofóbico-aerofílico.
Este microambiente redujo la actividad de disociación del agua y mejoró la selectividad de electrorreducción de CO2 a CO.

Conclusiones:

La regulación del microambiente interfacial con aditivos orgánicos es una estrategia clave para aumentar el rendimiento electroquímico.
El estudio demuestra un método para mejorar la electrorreducción de CO2 a CO mediante el control de la interfaz electrodo-electrolito utilizando surfactantes.