Wang Shuang, Ye Baoyun, An Chongwei, Wang Jingyu, Li Qianbing, Guo Hao, Zhang Jianwei
School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, China.
Shanxi Engineering Technology Research Center for Ultrafine Powder, North University of China, Taiyuan, 030051, China.
Nanoscale Res Lett. 2019 Nov 21;14(1):345. doi: 10.1186/s11671-019-3163-z.
Prepared composite materials based on [ZnO(benzene-1,4-dicarboxylate)] (MOF-5) and graphene oxide (GO) via a simple green solvothermal method, at which GO was used as platform to load MOF-5, and applied to the thermal decomposition of AP. The obtained composites were characterized by various techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD), nitrogen adsorption, Fourier transform infrared (FT-IR), differential scanning calorimetry and thermalgravimetric (DSC-TG). The analyses confirmed that the composite material (GO@) MOF-5 can not only improve the decomposition peak temperature of AP from the initial 409.7 C to 321.9 C, but also can improve the enthalpy (△H) from 576 J g to 1011 J g and reduce the activation energy (E), thereby accelerating the decomposition reaction. The high-specific surface area of the MOF material can provide a large number of active sites, so that the transition metal ions supported thereon can participate more effectively in the electron transfer process, and GO plays its role as a bridge by its efficient thermal and electrical conductivity. Together, accelerate the thermal decomposition process of AP.
通过简单的绿色溶剂热法制备了基于[ZnO(苯-1,4-二羧酸酯)]（MOF-5）和氧化石墨烯（GO）的复合材料，其中GO用作负载MOF-5的平台，并将其应用于AP的热分解。通过扫描电子显微镜（SEM）、X射线衍射（XRD）、氮气吸附、傅里叶变换红外光谱（FT-IR）、差示扫描量热法和热重分析法（DSC-TG）等多种技术对所得复合材料进行了表征。分析证实，复合材料（GO@）MOF-5不仅能将AP的分解峰值温度从初始的409.7℃提高到321.9℃，还能将焓（△H）从576 J/g提高到1011 J/g，并降低活化能（E），从而加速分解反应。MOF材料的高比表面积可提供大量活性位点，使负载在其上的过渡金属离子能更有效地参与电子转移过程，而GO凭借其高效的热导率和电导率发挥桥梁作用。两者共同加速了AP的热分解过程。
