Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

The Z-Scheme of Electron Transport in Photosynthesis01:34

The Z-Scheme of Electron Transport in Photosynthesis

10.3K
The light reactions of photosynthesis assume a linear flow of electrons from water to NADP+. During this process, light energy drives the splitting of water molecules to produce oxygen. However, oxidation of water molecules is a thermodynamically unfavorable reaction and requires a strong oxidizing agent. This is accomplished by the first product of light reactions: oxidized P680 (or P680+), the most powerful oxidizing agent known in biology. The oxidized P680 that acquires an electron from the...
10.3K
Photosystem II01:22

Photosystem II

71.4K
The multi-protein complex photosystem II (PS II) harvests photons and transfers their energy through its bound pigments to its reaction center, and ultimately to photosystem I (PSI) through the electron transport chain. The pigments responsible for caputirng the light energy in photosystems include chlorophyll a, chlorophyll b, and carotenoids.
The pigment molecules are arranged across  two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment...
71.4K
The Photochemical Reaction Center01:29

The Photochemical Reaction Center

4.2K
Reaction centers are pigment-protein complexes that initiate energy conversion from photons to chemical entities. Therefore, photochemical reaction center is a more appropriate term that describes these complexes. The Nobel laureates Robert Emerson and William Arnold provided the first experimental evidence of photochemical reaction centers by demonstrating the participation of nearly 2,500 chlorophyll molecules for the release of just one molecule of oxygen. Despite thousands of photosynthetic...
4.2K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

When Better Quenching Means Lower Yields: Electrostatic Control of Cage Escape.

ACS physical chemistry Au·2026
Same author

High-Efficiency Semitransparent Solar Cells Based on Magnetron Sputtered Sb<sub>2</sub>S<sub>3</sub> Thin Films.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2025
Same author

A pH-Switchable System for On-Demand Solar Hydrogen Production.

ChemSusChem·2025
Same author

Photochemical Pathways and Light-Enhanced Radical Scavenging Activity of 1,8-Dihydroxynaphthalene Allomelanin.

Journal of the American Chemical Society·2025
Same author

Enhancing zT in Organic Thermoelectric Materials through Nanoscale Local Control Crystallization.

ACS nano·2024
Same author

Dual Luminescent Mn(II)-Doped Cu-In-Zn-S Quantum Dots as Temperature Sensors in Water.

Small (Weinheim an der Bergstrasse, Germany)·2024

Related Experiment Video

Updated: Jul 26, 2025

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods
05:41

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

Published on: February 11, 2016

9.6K

RuO2 Nanostructure as an Efficient and Versatile Catalyst for H2 Photosynthesis.

Alberto Bianco1, Alessandro Gradone2, Vittorio Morandi2

  • 1Department of Chemistry ''Giacomo Ciamician'', University of Bologna, Via Selmi, 2, Bologna 40126, Italy.

ACS Applied Energy Materials
|June 16, 2023
PubMed
Summary

Ruthenium dioxide (RuO2) nanostructures show promise as a cost-effective and reusable catalyst for photocatalytic hydrogen (H2) generation. This versatile catalyst demonstrates robust performance in various conditions, offering a competitive alternative to platinum nanoparticles.

More Related Videos

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

8.4K
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
08:40

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

3.6K

Related Experiment Videos

Last Updated: Jul 26, 2025

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods
05:41

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

Published on: February 11, 2016

9.6K
Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
10:21

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

8.4K
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
08:40

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

3.6K

Area of Science:

  • Materials Science
  • Catalysis
  • Green Chemistry

Background:

  • Photocatalytic hydrogen generation is crucial for sustainable fuel and chemical production.
  • Developing cost-effective, stable, and reusable catalysts remains a significant challenge.

Purpose of the Study:

  • To evaluate commercial ruthenium dioxide (RuO2) nanostructures as a catalyst for hydrogen photoproduction.
  • To compare the performance of RuO2 with platinum nanoparticle catalysts.
  • To assess the catalyst's versatility and reusability in different media.

Main Methods:

  • Utilized a three-component system for photocatalytic hydrogen evolution.
  • Employed ethylenediaminetetraacetic acid (EDTA) and l-cysteine as electron donors in aqueous and organic media.
  • Recycled the catalyst via centrifugation to test reusability.

Main Results:

  • Achieved a hydrogen evolution rate of 0.137 mol h⁻¹ g⁻¹ with an apparent quantum efficiency (AQE) of 6.8% in water using EDTA.
  • Demonstrated successful hydrogen production using l-cysteine as an electron donor, a feat not easily achievable with other noble metal catalysts.
  • Showcased impressive H2 production in acetonitrile and confirmed catalyst reusability after multiple cycles.

Conclusions:

  • Commercial RuO2 nanostructures are a robust, versatile, and competitive catalyst for photocatalytic H2 generation.
  • RuO2 offers a cost-effective and reusable alternative to platinum catalysts.
  • The catalyst's adaptability to different electron donors and media broadens its potential applications in green chemistry.