Precise fabrication and superior combustion properties of n-B pomegranate microspheres based on a new dissolution-dispersion-coating method

IF 4.1 3区医学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY

ACS Chemical Neuroscience Pub Date : 2024-11-12 DOI:10.1016/j.cej.2024.157624

Yushu Xiong, Baoxuan Li, Yinghong Wang, Linlin Liu, Jie Huang, Suhang Chen, Fengqi Zhao, Kangzhen Xu

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Abstract

To enhance the reactivity and combustion efficacy of boron powders, a new dissolution-dispersion-coating (DDC) method of fabricating nano-boron (n-B) pomegranate microspheres were developed. Metal nanoparticles were uniformly encapsulated within n-B microspheres, which varied in size from 2 to 500 μm. The spheroidization mechanism of microsphere structure was investigated. Subsequently, the ignition and combustion performance of the prepared pomegranate microspheres were evaluated by combustion tests at 0.2 and 0.5 MPa, respectively. The results demonstrated that the n-B microspheres of F5 (75 wt% n-B@17 wt% NC@8 wt% n-Ti) exhibited superior performances, achieving the largest flame area, minimal ignition delay time and combustion time. The combustion thermal value and combustion residue analysis indicated that the content of available boron in the F5 microspheres exceeded 72.6 % and the combustion was complete. This study provides a novel approach to enhance the ignition and combustion efficiency of n-B powders.

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基于新型溶解-分散-包衣方法的 n-B 石榴微球的精确制备和优异的燃烧性能

为了提高硼粉的反应性和燃烧效果，研究人员开发了一种新的溶解-分散-涂层（DDC）方法来制造纳米硼（n-B）石榴微球。金属纳米颗粒被均匀地包裹在 n-B 微球中，微球的大小从 2 微米到 500 微米不等。研究了微球结构的球化机理。随后，分别在 0.2 和 0.5 兆帕下进行了燃烧试验，评估了制备的石榴微球的点火和燃烧性能。结果表明，F5 的 n-B 微球（75 wt% n-B@17 wt% NC@8 wt% n-Ti）性能优越，火焰面积最大，点火延迟时间和燃烧时间最短。燃烧热值和燃烧残余物分析表明，F5 微球中的可用硼含量超过 72.6%，且燃烧完全。这项研究为提高 n-B 粉末的点火和燃烧效率提供了一种新方法。

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来源期刊

ACS Chemical Neuroscience BIOCHEMISTRY & MOLECULAR BIOLOGY-CHEMISTRY, MEDICINAL

CiteScore

9.20

自引率

4.00%

发文量

323

审稿时长

1 months

期刊介绍： ACS Chemical Neuroscience publishes high-quality research articles and reviews that showcase chemical, quantitative biological, biophysical and bioengineering approaches to the understanding of the nervous system and to the development of new treatments for neurological disorders. Research in the journal focuses on aspects of chemical neurobiology and bio-neurochemistry such as the following: Neurotransmitters and receptors Neuropharmaceuticals and therapeutics Neural development—Plasticity, and degeneration Chemical, physical, and computational methods in neuroscience Neuronal diseases—basis, detection, and treatment Mechanism of aging, learning, memory and behavior Pain and sensory processing Neurotoxins Neuroscience-inspired bioengineering Development of methods in chemical neurobiology Neuroimaging agents and technologies Animal models for central nervous system diseases Behavioral research