Efficient promotion of Calliandra haematocephala flower-like MXene/ZnCo2O4 nanocomposites on thermal decomposition of ammonium perchlorate. (January 2023)

• Record Type: Journal Article
• Authors: Ye, Baoyun; Li, Keding; Feng, Chenhe; An, Chongwei; Wang, Jingyu; Zhang, Yong
• Is Part Of: Vacuum. Volume 207(2023)
• Publication Date: 2023-01
• Subjects: MXene -- ZnCo2O4 -- Nanocomposites -- Catalysis -- Ammonium perchlorate; Vacuum -- Periodicals; 621.55
• DOI: 10.1016/j.vacuum.2022.111509
• Languages: English
• ISSNs: 0042-207X

Abstract

Abstract: A series kind of methods were used to load ZnCo2 O4 nanoparticles on MXene nanosheets for preparing MXene-based ZnCo2 O4 (MXene/ZnCo2 O4 ) nanocomposites. The characterization results indicated that the MXene/ZnCo2 O4 nanocomposites (MZC-W) with a Calliandra haematocephala flower-like structure could be prepared by a two-step hydrothermal method and MZC-W with large specific surface area exhibited significant catalytic activity to the decomposition of ammonium perchlorate (AP). The decomposition performance of AP on MZC-W (2.0 wt%) showed that the high decomposition temperature of AP was highly reduced by 138.3 °C. For the heat of AP decomposition, it significantly increased to 1474.5 J g −1 . During this process, the E a of AP decomposition was reduced by 56.4%, while the reaction rate of AP decomposition was increased by 11.2 times. The remarkable catalytic activity of MZC-W was attributed to its high specific surface area and the synergistic effect between ZnCo2 O4 nanoparticles and MXene nanosheets. Predictably, MZC-W with potential application value could be used as a catalyst to ameliorate the decomposition of AP, while the synthesis method of MZC-W could be used as a simple idea to improve the catalytic activity of metal oxide nanoparticles. Graphical abstract: Image 1 Highlights: Three methods were used to prepare MXene/ZnCo2 O4 nanocomposites as catalysts. MZC-W exhibited a Calliandra haematocephala flower-like structure. MZC-W showed an excellent catalytic performance for AP decomposition. MZC-W reduced the E a of pure AP by 56.4% and increased the k of AP by 11.2 times.