Abstract MgFe2O4-GO nanocomposite was successfully prepared by in situ growth method and characterized by XRD, FT-IR, Raman, SEM and TEM. MgFe2O4 nanoparticles were tightly anchored on the surfaces of GO sheets, and no separation of MgFe2O4 from GO sheets was found after ultrasound treatment for 10 min. GO sheets effectively prevent the aggregation of MgFe2O4 nanoparticles, and the particle size of MgFe2O4 is about 80 nm. Catalytic decomposition results show that the MgFe2O4-GO nanocomposite could obviously reduce the decomposition temperature and apparent activation energy of AP from 406.8 to 306.5 °C and from 161.0 to 116.6 kJ mol−1，respectively, and increase the decomposition heat of AP from 654.7 to 1183.2 J g−1. The thermal decomposition temperature of RDX was also reduced from 242.3 to 234.6 °C. MgFe2O4-GO nanocomposite prepared by in situ growth method exhibits better catalytic decomposition performances than pure MgFe2O4, physical mixture MgFe2O4 + GO and self-assembled MgFe2O4/GO.

中文翻译：

---

MgFe 2 O 4 -GO纳米复合材料的原位制备及其对AP和RDX分解的催化反应

摘要 采用原位生长法成功制备了MgFe2O4-GO纳米复合材料，并对其进行了XRD、FT-IR、Raman、SEM和TEM表征。MgFe2O4 纳米颗粒紧紧地固定在 GO 片材的表面，超声处理 10 分钟后未发现 MgFe2O4 与 GO 片材分离。GO片有效地防止了MgFe2O4纳米颗粒的聚集，MgFe2O4的粒径约为80nm。催化分解结果表明，MgFe2O4-GO纳米复合材料可显着降低AP的分解温度和表观活化能，分别由406.8至306.5℃和161.0至116.6 kJ mol-1，并将AP的分解热从654.7提高至1183.2 焦耳-1。RDX的热分解温度也从242.3℃降低到234.6℃。