Issue 10, 2022

Fabrication of nanoscale core–shell structured lead azide/porous carbon based on a metal–organic framework with high safety performance

Abstract

In this work, we used a lead-containing MOF material as the precursor material to prepare a carbon-based lead azide with nano-scale lead azide coated with a carbon shell (LA/C) through carbonization and azide processes. The lead-containing MOF precursor materials, carbide intermediates, and lead azide/carbon with core–shell structures have all been characterized in detail. The exhaustive characterizations demonstrate that the electrostatic sensitivity of LA/C is reduced to 1.84 J, and the flame sensitivity is increased to 22 cm, thanks to the coating effect and excellent electrical and thermal conductivity of the carbon shell. High-speed photography of the initiation process shows that the initiation process of LA/C is extremely short (less than 1 ms) and LA/C has excellent detonation ability. The properties of LA/C are better than those of previously reported pure LA and most modified LA materials. These findings provide a new perspective for the synthesis of superior performance carbon-based primary explosives with a core–shell structure.

Graphical abstract: Fabrication of nanoscale core–shell structured lead azide/porous carbon based on a metal–organic framework with high safety performance

Supplementary files

Article information

Article type
Paper
Submitted
20 Dec 2021
Accepted
03 Feb 2022
First published
05 Feb 2022

New J. Chem., 2022,46, 4864-4870

Fabrication of nanoscale core–shell structured lead azide/porous carbon based on a metal–organic framework with high safety performance

Z. Yan, L. Yang, W. Tong and J. Han, New J. Chem., 2022, 46, 4864 DOI: 10.1039/D1NJ06060K

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