高氯酸铵
石墨烯
热分解
复合数
材料科学
催化作用
兴奋剂
氟
分解
无机化学
化学工程
化学
复合材料
纳米技术
有机化学
冶金
光电子学
工程类
作者
Qiang Ling,Hanwen Liang,Rong Wu,Wenwen Wang,Lei Zhao,Qingping Ke,Xiangchun Liu,Ping Cui
标识
DOI:10.1080/1536383x.2022.2080667
摘要
Fluorine-doped graphene supported PbO (F-rGO/PbO) composite was prepared through a facile water bath method to study an improvement strategy for its catalytic performance in thermal decomposition of ammonium perchlorate (AP). The characterization results showed that the PbO with the size of 20 ∼ 30 nm are highly dispersed on the surface of F-doped graphene (F-rGO). Compared with other samples, the F-rGO/PbO exhibited superior catalytic performance, as 3 wt% of catalyst added in AP, the peak temperature for HTD reduced by 124°C, and the peak temperature for LTD increased by 8°C. The released apparent specific heat of the thermal decomposition of AP catalyzed by F-rGO/PbO (3603.7 J/g) is five times of that of pure AP (603.5 J/g). The doping of F atoms in graphene increased BET surface areas of the F-rGO carrier and enhanced the content of hydroxyl groups on the surface of graphene, which improved the thermal decomposition rate of AP. While the highly dispersed PbO NPs further increased BET surface areas of F-rGO/PbO to provide more active sites during the thermal decomposition of AP.
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