Enhancing the energy release and combustion performance of nanothermites through the introduction of GO

IF 2.4 3区化学 Q4 CHEMISTRY, PHYSICAL

Chemical Physics Pub Date : 2025-09-06 DOI:10.1016/j.chemphys.2025.112938

Jingjing Wang , Xin Lu , Shuang Zuo , Dawei Li , Kangzhen Xu

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Abstract

Al/GO/CoWO₄ were prepared by a self-assembly method and the introduction of GO can effectively weaken the agglomeration of nanoparticles and improve the ignition performance. The different Φ and GO contents were adjusted to investigate the optimum performance. Al/GO/CoWO₄ shows a tight layered stacking structure and the energy release can reach 2500–3300 J·g⁻¹, much higher than those of Al/CoWO₄ (3064 J·g⁻¹) and Al/Co₃O₄ (2084 J·g⁻¹). Al/GO-7.5 wt%/CoWO₄(Φ = 1.50) has the largest energy release (3249 J·g⁻¹) and Al/GO-7.5 wt%/CoWO₄(Φ = 1.75) has the largest flame area, the shortest burning time (7 ms) and ignition delay time (2 ms) among all, indicating that the excess Al contributes to the full combustion of nanothermite reaction. The DSC results show the superior catalytic performance on ammonium perchlorate (AP) and cyclotrimethylenetrini-tramine (RDX). The results indicate the outstanding combustion and catalytic performance of Al/GO/CoWO₄

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通过引入氧化石墨烯提高纳米热螨的能量释放和燃烧性能

采用自组装法制备了Al/GO/CoWO4， GO的引入可以有效地减弱纳米颗粒的团聚，提高其点火性能。调整不同的Φ和GO含量来考察最佳性能。Al/GO/CoWO4表现出致密的层状堆积结构，能量释放可达2500 ~ 3300 J·g−1，远高于Al/CoWO4 （3064 J·g−1）和Al/Co3O4 （2084 J·g−1）。Al/GO-7.5 wt%/CoWO4（Φ = 1.50）的能量释放量最大（3249 J·g−1），Al/GO-7.5 wt%/CoWO4（Φ = 1.75）的火焰面积最大，燃烧时间最短（7 ms），点火延迟时间最短（2 ms），说明过量的Al有助于纳米热剂反应的充分燃烧。DSC结果表明，该催化剂对高氯酸铵（AP）和环三甲基三胺（RDX）具有优异的催化性能。结果表明，Al/GO/CoWO4具有优异的燃烧和催化性能

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来源期刊

Chemical Physics 化学-物理：原子、分子和化学物理

CiteScore

4.60

自引率

4.30%

发文量

278

审稿时长

39 days

期刊介绍： Chemical Physics publishes experimental and theoretical papers on all aspects of chemical physics. In this journal, experiments are related to theory, and in turn theoretical papers are related to present or future experiments. Subjects covered include: spectroscopy and molecular structure, interacting systems, relaxation phenomena, biological systems, materials, fundamental problems in molecular reactivity, molecular quantum theory and statistical mechanics. Computational chemistry studies of routine character are not appropriate for this journal.