纳米Ag/CNTs复合材料的制备、表征及对环三亚甲基三硝胺热分解的影响

doi:10.3866/PKU.WHXB201206292

物理化学学报 >> 2012, Vol. 28 >> Issue (09): 2202-2208.doi: 10.3866/PKU.WHXB201206292

纳米Ag/CNTs复合材料的制备、表征及对环三亚甲基三硝胺热分解的影响

安亭¹, 曹慧群², 赵凤起¹, 任晓宁¹, 田德余², 徐司雨¹, 高红旭¹, 谭艺¹, 肖立柏¹

1. 西安近代化学研究所燃烧与爆炸技术重点实验室, 西安 710065;
2. 深圳大学化学与化工学院, 深圳市新型锂离子电池与介孔材料重点实验室, 广东深圳 518060

收稿日期:2012-03-09 修回日期:2012-06-29 发布日期:2012-08-02
通讯作者: 曹慧群 E-mail:chq0524@163.com
基金资助:
国家自然科学基金(21173163)和燃烧与爆炸技术重点实验室基金(9140C3501041001)资助项目

Preparation and Characterization of Ag/CNTs Nanocomposite and Its Effect on Thermal Decomposition of Cyclotrimethylene Trinitramine

AN Ting¹, CAO Hui-Qun², ZHAO Feng-Qi¹, REN Xiao-Ning¹, TIAN De-Yu², XU Si-Yu¹, GAO Hong-Xu¹, TAN Yi¹, XIAO Li-Bai¹

1. Science and Technology on Combustion and Explosion Laboratory, Xi?an Modern Chemistry Research Institute, Xi?an 710065, P. R. China;
2. Shenzhen Key Laboratory of New Lithium-ion Battery and Mesoporous Materials, College of Chemistry and Chemical Engineering, Shenzhen 518060, Guangdong Province, P. R. China

Received:2012-03-09 Revised:2012-06-29 Published:2012-08-02
Contact: CAO Hui-Qun E-mail:chq0524@163.com
Supported by:
The project was supported by the National Natural Science Foundation of China (21173163) and Science and Technology Foundation of Science and Technology on Combustion and Explosion Laboratory, China (9140C3501041001).

摘要/Abstract

摘要：

采用银镜法和水热法制备了两种纳米Ag/CNTs(碳纳米管)复合材料, 利用傅里叶变换红外(FTIR)光谱、粉末X射线衍射(XRD)、透射电子显微镜(TEM)、扫描电子显微镜及能量散射光谱仪(SEM-EDS)对复合物的物相、组成、形貌和结构进行分析表征, 并运用差示扫描量热法(DSC)研究了纳米Ag/CNTs 复合材料对环三亚甲基三硝胺(RDX)热分解特性的影响. 结果表明: 纳米Ag 以10-80 nm的不规则球形“粘附”于纳米CNTs 表面,分散较均匀, 水热法制得的复合物表面纳米Ag较大、且负载的Ag粒子较多; 纳米Ag/CNTs 复合材料的加入改变了RDX的热分解过程, 使原有占主导的液相分解变为二次的气相反应加剧, RDX主分解峰形发生了明显的改变; 纳米Ag/CNTs 复合材料对RDX热分解的催化主要表现为分解温度的降低.

关键词: 碳纳米管, 纳米复合物, 环三亚甲基三硝胺, 银镜法, 水热法, 热分解

Abstract:

Two kinds of Ag/CNTs (carbon nanotubes) nanocomposite materials were successfully prepared by silver mirror reaction and hydrothermal methods. Their physical phase, composition, morphology, and structure were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscope-energy dispersive spectrometry (SEM-EDS). Catalytic effects of the Ag/CNTs nanocomposite on the thermal decomposition of cyclotrimethylene trinitramine (RDX) were investigated by differential scanning calorimetry (DSC). Our results indicated that the irregularly globose nano-Ag particles attached to the surface of the nano CNTs evenly. The nanocomposite product prepared hydrothermally had the highest loading of nano-Ag particles and largest Ag particle size. Both Ag/CNTs nanocomposites influenced the thermal decomposition of RDX, changing the primary decomposition of the liquid phase to a secondary gas phase reaction and resulting in obvious change in the shape of the main decomposition peak. The catalytic effect of Ag/CNTs nanocomposite on the thermal decomposition of RDX was mainly exhibited at lower decomposition temperature.

Key words: Carbon nanotube, Nanocomposite, Cyclotrimethylene trinitramine, Silver mirror reaction, Hydrothermal method, Thermal decomposition

安亭, 曹慧群, 赵凤起, 任晓宁, 田德余, 徐司雨, 高红旭, 谭艺, 肖立柏. 纳米Ag/CNTs复合材料的制备、表征及对环三亚甲基三硝胺热分解的影响[J]. 物理化学学报, 2012, 28(09): 2202-2208.

AN Ting, CAO Hui-Qun, ZHAO Feng-Qi, REN Xiao-Ning, TIAN De-Yu, XU Si-Yu, GAO Hong-Xu, TAN Yi, XIAO Li-Bai. Preparation and Characterization of Ag/CNTs Nanocomposite and Its Effect on Thermal Decomposition of Cyclotrimethylene Trinitramine[J]. Acta Phys. -Chim. Sin., 2012, 28(09): 2202-2208.

链接本文: https://www.whxb.pku.edu.cn/CN/10.3866/PKU.WHXB201206292

https://www.whxb.pku.edu.cn/CN/Y2012/V28/I09/2202

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纳米Ag/CNTs复合材料的制备、表征及对环三亚甲基三硝胺热分解的影响

Preparation and Characterization of Ag/CNTs Nanocomposite and Its Effect on Thermal Decomposition of Cyclotrimethylene Trinitramine

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