Construct 3D porous hollow Co3O4 micro-sphere: A potential oxidizer of nano-energetic materials with superior reactivity

Wang, Jun; Zheng, Bo; Qiao, Zhiqiang; Chen, Jin; Zhang, Liyuan; Zhang, Long; Li, Zhaoqian; Zhang, Xingquan; Yang, Guangcheng

doi:10.1016/j.apsusc.2018.02.104

Cited by 17 publications

(5 citation statements)

References 29 publications

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“…However, the development of the desired structure to significantly enhance the reactivity still remains challenging for researchers. Co 3 O 4 micro-spheres with 3D porous hollow were designed and prepared, in which gas-blowing agents (air) and maximized interfacial interactions were introduced to enhance the mass transport and reduce the diffusion distance between the oxidizer and fuel (aluminum) [ 38 ]. A low-onset decomposition temperature (423 °C) and high heat output (3118 J·g −1 ) were observed, resulting from porous and hollow nano-structure of Co 3 O 4 micro-spheres.…”

Section: Characteristics and Performance Of Nano-cemsmentioning

confidence: 99%

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Al-Based Nano-Sized Composite Energetic Materials (Nano-CEMs): Preparation, Characterization, and Performance

Pang¹,

Fan²,

Wang³

et al. 2020

Nanomaterials

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As one of the new types of functional materials, nano-sized composite energetic materials (nano-CEMs) possess many advantages and broad application prospects in the research field of explosives and propellants. The recent progress in the preparation and performance characterization of Al-based nano-CEMs has been reviewed. The preparation methods and properties of Al-based nano-CEMs are emphatically analyzed. Special emphasis is focused on the improved performances of Al-based nano-CEMs, which are different from those of conventional micro-sized composite energetic materials (micro-CEMs), such as thermal decomposition and hazardous properties. The existing problems and challenges for the future work on Al-based nano-CEMs are discussed.

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Section: Characteristics and Performance Of Nano-cemsmentioning

confidence: 99%

“…The reaction speed of the composition could be slightly improved by introducing gas products through nano-CEMs’ composition design. However, it will bring new problems, such as stability and storage performance [ 1 , 2 , 37 , 38 , 39 ].…”

Section: Conclusion and Future Challengesmentioning

confidence: 99%

Al-Based Nano-Sized Composite Energetic Materials (Nano-CEMs): Preparation, Characterization, and Performance

Pang¹,

Fan²,

Wang³

et al. 2020

Nanomaterials

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“…A thermal reaction is a typical solid-state reaction having highly exothermic and self-propagating characteristics [ 13 ]. The interfacial diffusion generally determines the heat and mass transfer, which is a fundamental process affecting combustion efficiency and energy release [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Peptide Assembly of Al/CuO Nanothermite for Enhanced Reactivity of Nanoaluminum Particles

Jin

Song²,

Liu³

et al. 2022

IJMS

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Biological self-assembly procedures, which are generally carried out in an aqueous solution, have been found to be the most promising method for directing the fabrication of diverse nanothermites, including Al/CuO nanothermite. However, the aqueous environment in which Al nanoparticles self-assemble has an impact on their stability. We show that using a peptide to self-assemble Al or CuO nanoparticles considerably improves their durability in phosphate buffer aqueous solution, with Al and CuO nanoparticles remaining intact in aqueous solution for over 2 weeks with minimal changes in the structure. When peptide-assembled Al/CuO nanothermite was compared with a physically mixed sample in phosphate buffer for 30 min, the energy release of the former was higher by 26%. Furthermore, the energy release of peptide-assembled Al/CuO nanocomposite in phosphate buffer showed a 6% reduction by Day 7, while that of the peptide-assembled Al/CuO nanocomposite in ultrapure water was reduced by 75%. Taken together, our study provides an easy method for keeping the thermal activity of Al/CuO nanothermite assembled in aqueous solution.

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“…Appropriate band structure prepared using ions doping or other methods can significantly change the light absorption ability and suppress the occurrence of photocorrosion. Therefore, a properly designed heterojunction photocatalyst − with a unique structure ,− could benefit not only high surface area but also spatially separated photogenerated electron–hole pairs, contributing to the suppression of photocorrosion.…”

Section: Introductionmentioning

confidence: 99%

Co₃O₄@CdS Hollow Spheres Derived from ZIF-67 with a High Phenol and Dye Photodegradation Activity

et al. 2020

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The Co 3 O 4 @CdS double-layered hollow spheres were first prepared by the template-removal method with the assistance of the ZIF-67 material; the structure has been proved by transmission electron microscopy (TEM). The Co 3 O 4 @CdS hollow spheres calcinated at 400 °C exhibited the highest photodegradation activity. Nearly 90% phenol was degraded after 2 h of visible-light irradiation. More than 80% rhodamine-B (RhB) was degraded within the first 30 min and nearly eliminated after 1 h of irradiation. The mechanism of the photodegradation reaction was investigated. Based on the analysis of electron spin resonance (ESR) spectra and radical trapping test, it was found that superoxide radicals are the major oxidative species for dye degradation and holes and hydroxyl radicals are the major oxidative species for phenol degradation. These results may be used in industrial wastewater treatment. The reaction obeys first-order reaction kinetics, and the rate constant of the Co 3 O 4 @CdS hollow sphere in dye degradation is 0.05 min –1 and that in phenol degradation is 0.02 min –1 , which is three times higher than that of CdS nanoparticles. These results indicated the high oxidizing ability of the samples.

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Construct 3D porous hollow Co3O4 micro-sphere: A potential oxidizer of nano-energetic materials with superior reactivity

Cited by 17 publications

References 29 publications

Al-Based Nano-Sized Composite Energetic Materials (Nano-CEMs): Preparation, Characterization, and Performance

Al-Based Nano-Sized Composite Energetic Materials (Nano-CEMs): Preparation, Characterization, and Performance

Peptide Assembly of Al/CuO Nanothermite for Enhanced Reactivity of Nanoaluminum Particles

Co₃O₄@CdS Hollow Spheres Derived from ZIF-67 with a High Phenol and Dye Photodegradation Activity

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Construct 3D porous hollow Co3O4 micro-sphere: A potential oxidizer of nano-energetic materials with superior reactivity

Cited by 17 publications

References 29 publications

Al-Based Nano-Sized Composite Energetic Materials (Nano-CEMs): Preparation, Characterization, and Performance

Al-Based Nano-Sized Composite Energetic Materials (Nano-CEMs): Preparation, Characterization, and Performance

Peptide Assembly of Al/CuO Nanothermite for Enhanced Reactivity of Nanoaluminum Particles

Co3O4@CdS Hollow Spheres Derived from ZIF-67 with a High Phenol and Dye Photodegradation Activity

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Product

Resources

About

Co₃O₄@CdS Hollow Spheres Derived from ZIF-67 with a High Phenol and Dye Photodegradation Activity