Copper azide fabricated by nanoporous copper precursor with proper density

Yu, Qingxia; Li, Mingyu; Zeng, Qingxuan; Wu, Xingyu; Zi-Chao, Zhang

doi:10.1016/j.apsusc.2018.02.123

Cited by 34 publications

(17 citation statements)

References 25 publications

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“…To date, a variety of copper azide-based materials, such as three-dimensional porous copper azide, nanoporous copper azide, metal–organic frameworks-derived copper azide, , and copper azide@C hybrid, have been fabricated by means of a common gas–solid azidation between copper and gaseous hydrazoic acid (HN 3 ). The gas–solid azidation has technically demonstrated advantages in controllability of the morphology and composition for the resulting products.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Electrosynthesis of Porous CuN₃ Films for Functional Energetic Chips

Zheng

Zhang

et al. 2020

ACS Sustainable Chem. Eng.

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A porous CuN3 film has been facilely synthesized by a sustainable electroassisted azidation methodology using the template of porous Cu as a precursor. Such porous CuN3 films show excellent performances of both superior energy release and tremendous brisance, which can be tuned by changes of the current density and azidation time. Energy release reaches a maximum of 1200 J·g–1 at a current density of 3.0 mA·cm–2 with a reaction time of 450 s. Meanwhile, the conversion ratio of Cu can reach ca. 31% with ca. 43 wt % of CuN3 in the prepared CuN3 film. In addition, the growth mechanism of the CuN3 film is justified by not only experimental observations but also density functional theory calculations. Compared with the common gas–solid azidation method, this electrosynthesis strategy can lead to great reduction in the reaction time (from >12 h to <10 min) even without the use of dangerous HN3 gas. Moreover, the preparation method here is fully compatible with microelectromechanical system (MEMS) technology, which is of great significance in promising applications for functional energetic chips.

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Section: Introductionmentioning

confidence: 99%

Sustainable Electrosynthesis of Porous CuN₃ Films for Functional Energetic Chips

Zheng

Zhang

et al. 2020

ACS Sustainable Chem. Eng.

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“…Several pioneering works have reported a new explosive charging strategy through in situ azide reaction to synthesize CA on the nanoporous copper, copper film, or copper foam substrate (denoted as PCu-CA) (Scheme ), which reduced the explosion caused in the handling, compacting, and shaping operation. − Nevertheless, the CA compounds are too sensitive to electrostatic discharge, only 0.05 mJ electrostatic discharge energy will induce an explosion, − significantly increasing the safety risk in highly integrated circuits chips. Hence, highly safe, powerful primary explosives assembled through an in situ charging method are highly desirable, yet remain a great challenge for the micro-initiation systems.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Copper Azide Film through Metal–Organic Framework for Micro-Initiator Applications

Wang

Han²,

Zhang³

et al. 2019

ACS Appl. Mater. Interfaces

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The paradox between safety and detonation performance, along with the intrinsic fragility of primary explosives, is the main bottleneck precluding their application in a micro-initiation system. To tackle these issues, we fabricate a flexible copper azide film (CA-C film@PF) via employing the metal−organic framework (MOF) film produced by electrospinning technique as the precursor, followed by pyrolysis treatment, in situ azide reaction, and perfluorinated coating procedures. The synergetic effect of MOF and interweaved polymer fiber endow the resultant copper azide film with excellent electrostatic stability and remarkable detonation performance. In particular, the electrostatic discharge sensitivity (E 50 ) value (9 mJ) is 180 times higher than that of the original copper azide powder (0.05 mJ) and the static electricity accumulation value (−Q) is 430 times lower than that of copper azide powder (0.04 vs 17.2 nC g −1 ). As the proof of concept, the copper azide film is further assembled in a microinitiation device, which can successfully detonate the secondary explosives CL-20. Additionally, the superhydrophobic surface of the CA-C film@PF merit the initiation power even after being soaked in water.

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“…Since copper azide produced copper and nitrogen after explosion 27 , copper could cause heavy metal poisoning in the human body. Therefore, we needed to carry out biological safety experiments in pig intestines, and used salt as drug powder.…”

Section: Resultsmentioning

confidence: 99%

A microexplosive shockwave-based drug delivery microsystem for treating hard-to-reach areas in the human body

et al. 2022

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Implantable drug-delivery microsystems have the capacity to locally meet therapeutic requirements by maximizing local drug efficacy and minimizing potential side effects. The internal organs of the human body including the esophagus, gastrointestinal tract, and respiratory tract, with anfractuos contours, all manifest with endoluminal lesions often located in a curved or zigzag area. The ability of localized drug delivery for these organs using existing therapeutic modalities is limited. Spraying a drug onto these areas and using the adhesion and water absorption properties of the drug powder to attach to lesion areas can provide effective treatment. This study aimed to report the development and application of microsystems based on microshockwave delivery of drugs. The devices comprised a warhead-like shell with a powder placed at the head of the device and a flexible rod that could be inserted at the tail. These devices had the capacity to deposit drugs on mucous membranes in curved or zigzag areas of organs in the body. The explosive impact characteristics of the device during drug delivery were analyzed by numerical simulation. In the experiment of drug delivery in pig intestines, we described the biosafety and drug delivery capacity of the system. We anticipate that such microsystems could be applied to a range of endoluminal diseases in curved or zigzag regions of the human body while maximizing the on-target effects of drugs.

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Copper azide fabricated by nanoporous copper precursor with proper density

Cited by 34 publications

References 25 publications

Sustainable Electrosynthesis of Porous CuN₃ Films for Functional Energetic Chips

Sustainable Electrosynthesis of Porous CuN₃ Films for Functional Energetic Chips

Fabrication of Copper Azide Film through Metal–Organic Framework for Micro-Initiator Applications

A microexplosive shockwave-based drug delivery microsystem for treating hard-to-reach areas in the human body

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Copper azide fabricated by nanoporous copper precursor with proper density

Cited by 34 publications

References 25 publications

Sustainable Electrosynthesis of Porous CuN3 Films for Functional Energetic Chips

Sustainable Electrosynthesis of Porous CuN3 Films for Functional Energetic Chips

Fabrication of Copper Azide Film through Metal–Organic Framework for Micro-Initiator Applications

A microexplosive shockwave-based drug delivery microsystem for treating hard-to-reach areas in the human body

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Product

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Sustainable Electrosynthesis of Porous CuN₃ Films for Functional Energetic Chips

Sustainable Electrosynthesis of Porous CuN₃ Films for Functional Energetic Chips