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氧化石墨烯/MFeO（M = 铜、钴、镍）纳米杂化物的简便制备及其在高氯酸铵热分解过程中的催化性能。

Facile preparation of rGO/MFeO (M = Cu, Co, Ni) nanohybrids and its catalytic performance during the thermal decomposition of ammonium perchlorate.

作者信息

Wang Weiran, Zhang Dongxiang

机构信息

College of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing 100081 P. R. China

出版信息

RSC Adv. 2018 Sep 17;8(56):32221-32230. doi: 10.1039/c8ra04412k. eCollection 2018 Sep 12.

DOI:10.1039/c8ra04412k
PMID:35547507
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9086251/
Abstract

Reduced graphene oxide/metal ferrite (rGO/MFeO, M = Cu, Co, Ni) nanohybrids are successfully prepared through a simple, one-step hydrothermal method. The rGO/MFeO nanohybrids are characterized by XRD, TEM, FT-IR, XPS, Raman and BET surface area measurements. The rGO/MFeO nanohybrids demonstrate amazing catalytic activities on the thermal decomposition of ammonium perchlorate (AP). DSC results indicate that rGO/MFeO nanohybrids (3 wt%), could decrease the decomposition temperature of pure AP from 424.7 °C to 329.1 °C, 338.3 °C, and 364.8 °C, respectively. This enhanced catalytic performance is mainly attributed to the synergistic effect of NPs and rGO. The activation energy ( ) of AP mixed with nanohybrids is investigated by two isoconversion methods, Flynne-Walle-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS), on a conversion degree () range from 0.05 to 0.95. The values of calculated from the above two methods matched with each other. A strong dependence of on is observed, indicating a complex decomposition process.

摘要

通过一种简单的一步水热法成功制备了还原氧化石墨烯/金属铁氧体（rGO/MFeO，M = Cu、Co、Ni）纳米杂化物。采用XRD、TEM、FT-IR、XPS、拉曼光谱和BET比表面积测量等手段对rGO/MFeO纳米杂化物进行了表征。rGO/MFeO纳米杂化物对高氯酸铵（AP）的热分解表现出惊人的催化活性。DSC结果表明，3 wt%的rGO/MFeO纳米杂化物可分别将纯AP的分解温度从424.7℃降至329.1℃、338.3℃和364.8℃。这种增强的催化性能主要归因于纳米粒子（NPs）与rGO的协同效应。采用两种等转化率方法，即Flynne-Walle-Ozawa（FWO）法和Kissinger-Akahira-Sunose（KAS）法，在0.05至0.95的转化率（）范围内研究了与纳米杂化物混合的AP的活化能（）。由上述两种方法计算得到的值相互匹配。观察到对有很强的依赖性，表明分解过程复杂。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5dba/9086251/a73a6434917e/c8ra04412k-f10.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5dba/9086251/a73a6434917e/c8ra04412k-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5dba/9086251/e888ea2ed0e9/c8ra04412k-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5dba/9086251/5e91951e3b42/c8ra04412k-f8.jpg
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