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

Nuclear Transmutation03:20

Nuclear Transmutation

17.6K
Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed...
17.6K
Homogeneous Equilibria for Gaseous Reactions02:15

Homogeneous Equilibria for Gaseous Reactions

25.2K
Homogeneous Equilibria for Gaseous Reactions
For gas-phase reactions, the equilibrium constant may be expressed in terms of either the molar concentrations (Kc) or partial pressures (Kp) of the reactants and products. A relation between these two K values may be simply derived from the ideal gas equation and the definition of molarity. According to the ideal gas equation:
25.2K
Free Energy Changes for Nonstandard States03:25

Free Energy Changes for Nonstandard States

11.4K
The free energy change for a process taking place with reactants and products present under nonstandard conditions (pressures other than 1 bar; concentrations other than 1 M) is related to the standard free energy change according to this equation:
 
where R is the gas constant (8.314 J/K·mol), T is the absolute temperature in kelvin, and Q is the reaction quotient. This equation may be used to predict the spontaneity of a process under any given set of conditions.
Reaction Quotient...
11.4K
Noble Gases02:54

Noble Gases

17.5K

The elements in group 18 are noble gases (helium, neon, argon, krypton, xenon, and radon). They earned the name “noble” because they were assumed to be nonreactive since they have filled valence shells. In 1962, Dr. Neil Bartlett at the University of British Columbia proved this assumption to be false.
17.5K
Nuclear Fusion02:45

Nuclear Fusion

20.1K
The process of converting very light nuclei into heavier nuclei is also accompanied by the conversion of mass into large amounts of energy, a process called fusion. The principal source of energy in the sun is a net fusion reaction in which four hydrogen nuclei fuse and ultimately produce one helium nucleus and two positrons.
A helium nucleus has a mass that is 0.7% less than that of four hydrogen nuclei; this lost mass is converted into energy during the fusion. This reaction produces about...
20.1K
Overview of Nitrogen Metabolism01:20

Overview of Nitrogen Metabolism

7.9K
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of  ammonia, ammonium ions, nitrate, nitrite, or  nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
7.9K

You might also read

Related Articles

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

Sort by
Same author

Association between achievement motivation and anxiety symptoms among college students.

Frontiers in psychology·2026
Same author

A lipid droplet-targeted viscosity-sensitive fluorescent probe for visualization of tumor and NAFLD imaging.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy·2026
Same author

The role of the WD40-repeat protein family in cancer.

Molecular cancer·2026
Same author

Selective Am(III)/Eu(III) Separation by Asymmetric Phenanthroline Derivatives with Lateral Phosphonate and Pyrazole Groups.

Inorganic chemistry·2026
Same author

Corrigendum to "Gut microbiota metabolite Urolithin B inhibits chondrocyte ferroptosis by rewriting iron homeostasis via FGFR3/NCOA4/FTH1 axis, alleviating osteoarthritis" [Phytomedicine (Volume 148, 25 November 2025, 157292)].

Phytomedicine : international journal of phytotherapy and phytopharmacology·2026
Same author

RCS-YOLOv8: an improved YOLOv8 for wind turbine blade defect detection.

Scientific reports·2026

Related Experiment Video

Updated: Jul 4, 2025

Preparation and Reactivity of Gasless Nanostructured Energetic Materials
09:50

Preparation and Reactivity of Gasless Nanostructured Energetic Materials

Published on: April 2, 2015

10.2K

All-Nitrogen Energetic Material Cubic Gauche Polynitrogen: Plasma Synthesis and Thermal Performance.

Chenxi Qu1,2, Jiale Li1, Kewei Ding1

  • 1Xi'an Modern Chemistry Research Institute, Xi'an 710065, China.

Molecules (Basel, Switzerland)
|January 26, 2024
PubMed
Summary

Polynitrogen, a high-energy material, was synthesized and its thermal decomposition was analyzed. Cubic gauche polynitrogen (cg-N) exhibits good thermal stability with a decomposition temperature of 429 °C.

Keywords:
PECVDall-nitrogen materialdecomposition kineticspolynitrogenthermal decomposition performance

More Related Videos

Emission Spectroscopic Boundary Layer Investigation during Ablative Material Testing in Plasmatron
09:41

Emission Spectroscopic Boundary Layer Investigation during Ablative Material Testing in Plasmatron

Published on: June 9, 2016

12.4K
Nitrogen Compound Characterization in Fuels by Multidimensional Gas Chromatography
08:22

Nitrogen Compound Characterization in Fuels by Multidimensional Gas Chromatography

Published on: May 15, 2020

7.7K

Related Experiment Videos

Last Updated: Jul 4, 2025

Preparation and Reactivity of Gasless Nanostructured Energetic Materials
09:50

Preparation and Reactivity of Gasless Nanostructured Energetic Materials

Published on: April 2, 2015

10.2K
Emission Spectroscopic Boundary Layer Investigation during Ablative Material Testing in Plasmatron
09:41

Emission Spectroscopic Boundary Layer Investigation during Ablative Material Testing in Plasmatron

Published on: June 9, 2016

12.4K
Nitrogen Compound Characterization in Fuels by Multidimensional Gas Chromatography
08:22

Nitrogen Compound Characterization in Fuels by Multidimensional Gas Chromatography

Published on: May 15, 2020

7.7K

Area of Science:

  • Materials Science
  • Chemistry
  • Energetic Materials

Background:

  • Theoretical calculations suggest polynitrogen is an ultrahigh-energy material.
  • Synthesis of cubic gauche polynitrogen (cg-N) has been achieved, but its thermal performance remains unclear.

Purpose of the Study:

  • To synthesize macroscopic polynitrogen samples using a coated substrate.
  • To investigate the thermal decomposition behavior and stability of cg-N.

Main Methods:

  • Plasma-enhanced chemical vapor deposition (PECVD) with carbon nanotubes.
  • Characterization using IR, Raman, XRD, XPS, and TEM.
  • Thermal analysis including DSC, TG-DSC-FTIR-MS, and kinetic analysis (Kissinger, Ozawa equations).

Main Results:

  • Macroscopic cg-N samples were successfully synthesized with increased yield using coated substrates.
  • The structure of the deposited polynitrogen was confirmed as cg-N.
  • The thermal decomposition temperature of cg-N was determined to be 429 °C.
  • Apparent activation energy (Ea) was calculated as 84.7 kJ/mol (Kissinger) and 91.9 kJ/mol (Ozawa).

Conclusions:

  • cg-N is an all-nitrogen material with good thermal stability.
  • cg-N demonstrates potential for application in high-energy-density materials.