Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Hydrogen Bonds00:26

Hydrogen Bonds

109.5K
Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
109.5K
pH01:24

pH

121.5K
The potential of hydrogen (pH) is a measure of the acidity or basicity of a water-based solution determined by the concentration of hydronium ions (H3O+). In one liter of pure water at neutral pH, there are 1×10−7 moles of hydronium ions. However, the extensive range of hydronium ion concentrations present in water-based solutions makes measuring pH in moles cumbersome. Therefore, a pH scale was developed to convert moles of hydronium ions into the negative logarithm of the hydronium...
121.5K
Batteries and Fuel Cells03:12

Batteries and Fuel Cells

24.1K
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
24.1K
Reduction of Alkenes: Catalytic Hydrogenation02:13

Reduction of Alkenes: Catalytic Hydrogenation

12.4K
Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
12.4K
Heterogeneous Catalysis01:22

Heterogeneous Catalysis

141
Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
141
Production of Organic Acids01:25

Production of Organic Acids

105
Lactic acid, an important organic acid extensively applied in food, pharmaceutical, and biodegradable polymer industries, is primarily produced via microbial fermentation. This method is favored over chemical synthesis due to its environmental sustainability and capacity for enantiomerically pure product formation. Among various microbial processes, the fermentation of starch-based substrates stands out due to the abundance and renewability of raw materials like corn and potatoes.Hydrolysis of...
105

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Mechanical Gating of Redox Access in Molecular Electrocatalysis.

Journal of the American Chemical Society·2026
Same author

CFTR mRNA-Based Gene Therapy for Cystic Fibrosis: A Mutation-Agnostic Strategy to Restore Ion Transport Function.

Current gene therapy·2026
Same author

Electrostatic decatalysis through coulombic screening.

Chemical science·2026
Same author

MOF-Driven Direct Oxidative Electrocatalysis of Urea.

ACS applied materials & interfaces·2026
Same author

A bio-inspired sustainable sugar battery integrated with a reversible coordination complex.

Chemical communications (Cambridge, England)·2026
Same author

Enhancing Olaparib's anti-cancer potential using nanostructured lipid carriers: formulation, evaluation, and in-vitro biological impact.

Naunyn-Schmiedeberg's archives of pharmacology·2026
Same journal

Metal-Organic Framework Multizyme Colloids with Joint Antioxidant and Protease Function.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Morphology Engineering of Co<sub>3</sub>O<sub>4</sub> via Cetyltrimethylammonium Bromide-Mediated ZIF-67 Synthesis for Efficient Photo-Assisted Electrooxidation of Methanol.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Speciation of Silanol Groups on Commercial Precipitated Silicas via IR Spectroscopy.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Regenerable PVA Hydrogel-Functionalized Optical Fiber Sensor for Ultra-Trace Detection of Berberine Hydrochloride.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Hydrogen Plasma-Driven Surface Defect Engineering of ZnO Nanorods: Correlating Electronic Structure and Photoelectrochemical Performance.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Cooperative Self-Assembly of Nanoparticle-Encapsulating Hybrid Protein Cages.

Langmuir : the ACS journal of surfaces and colloids·2026
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: May 2, 2026

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
06:32

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions

Published on: August 17, 2016

19.7K

Producción de combustible de hidrógeno con un amplio rango de pH impulsado por la interfaz

Disha Sonwani1, Bhojkumar Nayak1, Neeraj Mishra2

  • 1Department of Chemistry, Indian Institute of Science Education and Research, Pune, Dr. Homi Bhabha Road, Pune- 411008, India.

Langmuir : the ACS journal of surfaces and colloids
|August 21, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores desarrollaron un nuevo catalizador de heteroestructura de doble carburo para una producción eficiente de hidrógeno. Este electrocatalizador avanzado demuestra un excelente rendimiento en todos los niveles de pH, ofreciendo una alternativa rentable y estable al platino para soluciones de energía sostenible.

Más Videos Relacionados

Hydrogen Production and Utilization in a Membrane Reactor
10:00

Hydrogen Production and Utilization in a Membrane Reactor

Published on: March 10, 2023

2.5K
Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
06:39

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells

Published on: October 20, 2023

3.2K

Videos de Experimentos Relacionados

Last Updated: May 2, 2026

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
06:32

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions

Published on: August 17, 2016

19.7K
Hydrogen Production and Utilization in a Membrane Reactor
10:00

Hydrogen Production and Utilization in a Membrane Reactor

Published on: March 10, 2023

2.5K
Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
06:39

Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells

Published on: October 20, 2023

3.2K

Área de la Ciencia:

  • Ciencias de los materiales
  • La electroquímica
  • Catálisis

Sus antecedentes:

  • La producción sostenible de hidrógeno es vital para un futuro neutral en carbono.
  • Se necesitan electrocatalizadores eficientes y rentables para la reacción de evolución del hidrógeno (HER).
  • Los catalizadores actuales a menudo enfrentan limitaciones en la estabilidad o el rendimiento en diferentes entornos de pH.

Objetivo del estudio:

  • Desarrollar un nuevo electrocatalizador con alto rendimiento HER en un amplio rango de pH.
  • Investigar el papel de la ingeniería de interfaz en la mejora de la actividad catalítica.
  • Demostrar una alternativa rentable y estable a los catalizadores de metales preciosos.

Principales métodos:

  • Síntesis de un catalizador de heteroestructura de doble carburo.
  • Pruebas electroquímicas del catalizador en electrolitos ácidos, neutrales y alcalinos.
  • Cálculos de la Teoría Funcional de Densidad (DFT) para analizar la energética de reacción y la estructura electrónica.
  • Pruebas de estabilidad a largo plazo en un electrolizador de agua salina.

Principales resultados:

  • El catalizador de heteroestructura de doble carburo exhibió un rendimiento excepcional de HER con bajos sobrepotenciales, comparable al platino.
  • El catalizador demostró una notable estabilidad y actividad en todos los rangos de pH probados (pH-universal).
  • Los cálculos de DFT confirmaron energías de adsorción/desorción de hidrógeno optimizadas (ΔGH* ≈ 0,34 eV) debido a los efectos sinérgicos en la heterointerfaz.
  • El catalizador mantuvo un rendimiento constante durante 200 horas en un electrolizador de agua salina sin degradación.

Conclusiones:

  • La ingeniería de interfaz de las heteroestructuras de doble carburo es una estrategia prometedora para los electrocatalizadores HER avanzados.
  • El catalizador desarrollado ofrece una solución rentable, estable y de alto rendimiento para la producción sostenible de hidrógeno.
  • Este trabajo allana el camino para la utilización de catalizadores de metales no preciosos que rivalizan con el rendimiento de los metales nobles.