Jove
Visualize
Contact Us

Related Concept Videos

Quantum Numbers02:43

Quantum Numbers

50.1K
It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
50.1K
The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

57.3K
Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
57.3K
Convergent Evolution01:54

Convergent Evolution

32.9K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
32.9K
The Evidence for Evolution02:55

The Evidence for Evolution

48.2K
Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
48.2K
Eukaryotic Evolution01:24

Eukaryotic Evolution

41.4K
The endosymbiont theory is the most widely accepted theory of eukaryotic evolution; however, its progression is still somewhat debated. According to the nucleus-first hypothesis, the ancestral prokaryote first evolved a membrane to enclose DNA and form the nucleus. Conversely, the mitochondria-first hypothesis suggests that the nucleus was formed after endosymbiosis of mitochondria.
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...
41.4K
Synteny and Evolution02:31

Synteny and Evolution

3.8K
John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
3.8K

You might also read

Related Articles

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

Sort by
Same author

Diagnostic Accuracy of Nurse-Led ED Triage Using the Modified All India Institute of Medical Sciences Triage Protocol: A Cross-Sectional Study in a Tertiary-Care Center in India.

Journal of emergency nursing·2026
Same author

Microstructural Densification of NASICON Solid Electrolytes Toward High-Performance Solid-State Sodium Batteries.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Electrochemical CO<sub>2</sub> Reduction on a Bi-Sn Eutectic Alloy in Acidic Media for Formic Acid Production.

ChemSusChem·2026
Same author

Triggering Exothermic Water Dissociation on Copper via Rhenium Implantation for Enhanced Alkaline Hydrogen Generation.

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

Boosting the Structural Stability of High-Voltage Sodium Layered Cathodes via Site-Selective La/Ti Co-Doping.

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

Fluorine-rich interface for garnet-based high-performance all-solid-state lithium batteries.

Chemical science·2025
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 Experiment Video

Updated: Feb 3, 2026

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

18.7K

Functionalized Phosphorene Quantum Dots as Efficient Electrocatalyst for Oxygen Evolution Reaction.

Ranjith Prasannachandran1, Thazhe Veettil Vineesh1, Athira Anil1

  • 1School of Physics , Indian Institute of Science Education and Research Thiruvananthapuram , Maruthamala PO , Thiruvananthapuram , Kerala 695551 , India.

ACS Nano
|October 27, 2018
PubMed
Summary

Nitrogen-functionalized phosphorene quantum dots (FPQDs) show enhanced electrocatalytic activity for the oxygen evolution reaction (OER). This novel synthesis method offers a promising pathway for developing efficient electrodes for water-splitting technologies.

Keywords:
black phosphoruselectrocatalysiselectrochemical exfoliationoxygen evolution reactionquantum dots

More Related Videos

Production and Targeting of Monovalent Quantum Dots
10:16

Production and Targeting of Monovalent Quantum Dots

Published on: October 23, 2014

26.1K
Synthesis of Cd-free InP/ZnS Quantum Dots Suitable for Biomedical Applications
10:56

Synthesis of Cd-free InP/ZnS Quantum Dots Suitable for Biomedical Applications

Published on: February 6, 2016

14.6K

Related Experiment Videos

Last Updated: Feb 3, 2026

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

18.7K
Production and Targeting of Monovalent Quantum Dots
10:16

Production and Targeting of Monovalent Quantum Dots

Published on: October 23, 2014

26.1K
Synthesis of Cd-free InP/ZnS Quantum Dots Suitable for Biomedical Applications
10:56

Synthesis of Cd-free InP/ZnS Quantum Dots Suitable for Biomedical Applications

Published on: February 6, 2016

14.6K

Area of Science:

  • Materials Science, Nanotechnology
  • Electrochemistry, Catalysis

Background:

  • Two-dimensional layered nanomaterials, including phosphorene, are gaining attention for their catalytic properties.
  • Few-layered phosphorene sheets exhibit promising electrocatalytic activity for the oxygen evolution reaction (OER).
  • Achieving enhanced OER activity requires controlled synthesis of phosphorene nanostructures with high surface area and active sites.

Purpose of the Study:

  • To develop a novel strategy for the controlled synthesis and in situ surface functionalization of phosphorene quantum dots (PQDs).
  • To investigate the electrocatalytic performance of functionalized PQDs (FPQDs) for the oxygen evolution reaction (OER).

Main Methods:

  • A single-step electrochemical exfoliation process was employed for the synthesis and functionalization of PQDs.
  • Electrocatalytic activity for OER was evaluated using techniques such as cyclic voltammetry and chronoamperometry.
  • Electron transfer kinetics were assessed using a Fe2+/Fe3+ redox probe.

Main Results:

  • Phosphorene quantum dots functionalized with nitrogen-containing groups (FPQDs) demonstrated efficient and stable electrocatalytic activity for OER.
  • FPQDs achieved an overpotential of 1.66 V at 10 mA cm⁻², a low Tafel slope of 48 mV dec⁻¹, and excellent stability.
  • Enhanced electron transfer kinetics were observed for FPQDs compared to pristine PQDs.

Conclusions:

  • The novel electrochemical exfoliation method enables controlled synthesis and functionalization of PQDs.
  • FPQDs exhibit significant potential as efficient and stable electrocatalysts for the oxygen evolution reaction.
  • Phosphorene-based materials show promise for technologically viable electrodes in water-splitting devices.