MoS2 stabilize Ti3C2 MXene for excellent catalytic effect of thermal decomposition of ammonium perchlorate

被引:0
作者
Lu, Zhehong [1 ,3 ]
Li, Jingyi [1 ]
Li, Binxin [1 ]
Yuan, Ruixuan [4 ]
Cao, Guolin [5 ]
Guan, Shaoliang [6 ]
Jiang, Wei [3 ]
Zhu, Jie [1 ,2 ]
机构
[1] Queens Univ, Sch Mech & Aerosp Engn, Belfast BT9 5AH, North Ireland
[2] Hunan Univ Humanities Sci & Technol, Sch Mat & Environm Engn, Hunan Prov Key Lab Fine Ceram & Powder Mat, Loudi 417000, Peoples R China
[3] Nanjing Univ Sci & Technol, Natl Special Superfine Powder Engn Res Ctr China, Nanjing 210014, Peoples R China
[4] Lianyungang Hydrol & Water Resources Survey Bur Ji, Lianyungang 222000, Peoples R China
[5] GEM Jiangsu Cobalt Ind Co Ltd, Taixing 225442, Peoples R China
[6] Cavendish Lab, Maxwell Ctr, Cambridge CB3 0HE, England
关键词
MoS2; AP; Electrical conductivity; Catalytic mechanism; Active sites; CARBON; NANOSHEETS; ENERGY;
D O I
10.1016/j.vacuum.2024.113812
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Ammonium perchlorate (AP), the most widely used oxidizer in energetic materials, is crucial for studying catalytic thermal decomposition. Newly discovered Ti3C2 MXene and MoS2 demonstrating promising prospects in the field of the pyrolysis catalyst in AP. In this study, we employed a hydrothermal method to anchor nano-sized MoS2 in situ on the surface of Ti3C2 MXene, leading to the fabrication of MoS2-Ti3C2 nanocomposites. Various characterizations indicated that MoS2 was attached to the surface and edges of Ti3C2, thereby enhancing the stability and conductivity. Results revealed that upon the addition of 4 wt% MoS2-Ti3C2, the low-temperature decomposition peak of AP reduced from 331.2 degrees C to 296.6 degrees C, while the high-temperature decomposition peak advanced from 427.5 degrees C to 387.1 degrees C, showing a superior catalytic effect compared to the individual MoS2 or Ti3C2. Additionally, the catalytic mechanism of MoS2-Ti3C2 on the thermal decomposition of AP may involve enhanced electrical conductivity, facilitating rapid proton transfer (H+), accelerated redox reactions, prompt release of gas products, and thereby expediting the progression of the decomposition reaction. Consequently, it can be anticipated that anchoring MoS2 on the surface of Ti3C2 represents an effective strategy for enhancing the catalytic activity of Ti3C2 MXene towards the thermal decomposition of AP.
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页数:8
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