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Related Concept Videos

Hydrogen Bonds01:04

Hydrogen Bonds

A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
Hydrogen Bonds00:26

Hydrogen Bonds

Hydrogen BondsHydrogen 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...
Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride01:26

Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride

Radical substitution reactions can be used to remove functional groups from molecules. The hydrogenolysis of alkyl halides is one such reaction, where the weak Sn–H bond in tributyltin hydride reacts with alkyl halides to form alkanes. Here, the reagent Bu3SnH yields tributyltin halide as a byproduct.
The bonds formed in this reaction are stronger than the bonds broken, making it energetically favorable. The reaction follows a radical chain mechanism similar to radical halogenation reactions,...
Adsorption Isotherms II01:25

Adsorption Isotherms II

Brunauer, Emmett, and Teller (BET) introduced a theory in 1938 that modified Langmuir's assumptions to explain multilayer physical adsorption. This theory is applicable to Type II isotherms and provides a more realistic picture of adsorption processes. The BET theory assumes a uniform solid surface with localized adsorption sites, where adsorption at one site doesn't affect adsorption at neighboring sites. This theory also allows for the possibility of additional molecules being adsorbed on top...

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Related Experiment Video

Updated: Jun 12, 2026

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
09:05

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

Published on: May 15, 2015

High-Capacityand Reversible Hydrogen Storage in an Intrinsic Li3B2N2 Monolayer.

Haichuan Yu1, Jingyan Chen1, Jian Hao1

  • 1Jiangsu Key Laboratory of Extreme Multi-Field Materials Physics, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China.

Nanomaterials (Basel, Switzerland)
|June 11, 2026
PubMed
Summary

Researchers developed a novel two-dimensional material, lithium boron nitride (Li3B2N2) monolayer, for efficient hydrogen storage. This material demonstrates high capacity and reversible storage under near-ambient conditions, addressing a key challenge in clean energy.

Keywords:
adsorption energydesorption temperaturefirst-principleshydrogen storagemetal-decoration-freestorage capacity

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A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
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Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
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Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

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Last Updated: Jun 12, 2026

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
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A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
06:32

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Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
14:11

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Published on: March 29, 2016

Area of Science:

  • Materials Science
  • Energy Storage
  • Nanotechnology

Background:

  • Hydrogen is a promising clean energy carrier due to its high energy density and environmental friendliness.
  • Developing safe and reversible hydrogen storage materials is crucial for practical hydrogen energy applications.
  • Two-dimensional (2D) materials offer unique properties like large surface area and tunable electronic structures for advanced storage solutions.

Purpose of the Study:

  • To predict and identify a novel 2D material for efficient and reversible hydrogen storage.
  • To investigate the hydrogen adsorption capacity and mechanism of the proposed material.
  • To assess the stability and reversibility of the material under relevant conditions.

Main Methods:

  • Crystal structure prediction techniques were employed to discover potential 2D materials.
  • First-principles calculations were utilized to analyze the electronic structure and hydrogen adsorption properties.
  • Thermodynamic analysis (van't Hoff) was performed to evaluate storage reversibility.

Main Results:

  • A stable metallic Li3B2N2 monolayer was predicted as a promising hydrogen storage material.
  • The Li3B2N2 monolayer exhibits a high hydrogen storage capacity of approximately 7.8 wt.%.
  • Hydrogen adsorption is driven by electrostatic polarization and orbital hybridization, with stable storage at room temperature and 3.7 MPa.

Conclusions:

  • The Li3B2N2 monolayer is a promising intrinsic 2D material for high-density hydrogen storage.
  • Favorable reversibility at near-ambient conditions suggests practical applicability.
  • This discovery advances the development of next-generation hydrogen storage technologies.