Core-Shell Hetero-Framework derived Copper Azide Composites as Excellent Laser-Ignitable Primary Explosives

Chao Wang; Hui-Min Guo; Rui PangWei-Wei RenYong-Li WeiAi-Feng HeRui ZhangLei ZhangJian-Hua ChenQian-You WangShuang-Quan Zang

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Core-Shell Hetero-Framework derived Copper Azide Composites as Excellent Laser-Ignitable Primary Explosives

机译：Core-Shell Hetero-Framework derived Copper Azide Composites as Excellent Laser-Ignitable Primary Explosives

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Laser initiation has attracted increasing interest owing to its extraordinarysafety and high reliability. However, traditional metal complex-based laserignitableprimary explosives are limited by high input laser energy and lowdetonation ability. In this study, an efficient laser-ignitable primary explosivebasedcopper azide is prepared by constructing core-shell hetero-frameworkCu-MOF@COF as the precursor. The pyrolysis of Cu-MOF@COF hybridmaterial affords copper azide (CA) nanoparticle confined in a porous carbonshell, referred to CA@C Shell. The evenly coated porous carbon shell functionsas light-to-heat conversion layer efficiently promoting the laser initiationprocess of inside CA. Consequently, CA@C Shell can be initiated at lowerlaser energy thresholds (0.80 mJ at 1064 nm). This value is significantly lowerthan typical laser ignitable metal complex tetraamine-cis-bis(5-nitro-2H-tetrazolato-N2)cobalt(III)perchlorate (726 mJ at 808 nm). Moreover, the CA@CShell successfully detonates the secondary explosives CL-20 by laser energywhen it is assembled in a micro-detonator system. This study offers a uniquemethod for constructing high performance laser-ignitable primary explosivesfor micro-detonator applications.

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来源
《Advanced functional materials》 |2022年第46期|2207524.1-2207524.9|共9页
作者
Chao Wang; Hui-Min Guo; Rui PangWei-Wei RenYong-Li WeiAi-Feng HeRui ZhangLei ZhangJian-Hua ChenQian-You WangShuang-Quan Zang;
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作者单位

Henan Key Laboratory of Crystalline Molecular Functional MaterialsGreen Catalysis Center and College of ChemistryZhengzhou UniversityZhengzhou 450001, China;

International Laboratory for Quantum Functional Materials of HenanSchool of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450001, China;

China Science and Technology on Applied Physical Chemistry LaboratoryShaanxi Applied Physics-Chemistry Research InstituteXi’an 710061, China;

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正文语种英语
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copper azides; core-shell structures; laser initiation; MOF@COF hybrids; primary explosives;

Core-Shell Hetero-Framework derived Copper Azide Composites as Excellent Laser-Ignitable Primary Explosives

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