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人工晶体学报 ›› 2017, Vol. 46 ›› Issue (10): 2083-2089.

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草酸根作用下Co3O4八面体的控制合成

周海;康敏;王曼丽;吴东;吕宝亮   

  1. 遵义师范学院化学化工学院,遵义 563006;贵州省黔北特色资源?τ醚芯渴笛槭?遵义 563006;中国科学院山西煤炭化学研究所煤转化国家重点实验室,太原,030001
  • 出版日期:2017-10-15 发布日期:2021-01-20
  • 基金资助:
    贵州省科技厅项目(QKHJZ[2015]2145,QKHJC[2017]1208,QKHLHZ[2015]7046);贵州省教育厅项目(QJHKYZ[2015]394, QJHKYZ[2016]093)

Controllable Synthesis of Co3O4 Octahedra with the Assistance of C2 O2-4

ZHOU Hai;KANG Min;WANG Man-li;WU Dong;LYU Bao-liang   

  • Online:2017-10-15 Published:2021-01-20

摘要: 在草酸根的作用下,采用水热法合成了暴露八个(111)晶面的Co3 O4八面体.采用XRD、SEM、TEM和HRTEM等手段对产物进行了表征和分析,结果表明该Co3 O4八面体呈立方晶相且具有很高的结晶性.详细研究了反应时间、反应温度、草酸根浓度等反应条件对Co3 O4形貌的影响.研究表明草酸根可选择吸附在Co3 O4的(111)晶面,通过其较大的空间位阻限制(111)晶面的生长,从而使该晶面得以最终暴露.由于(111)晶面具有较高的能量,该Co3 O4八面体具有良好的高氯酸铵(AP)催化热分解性能.

关键词: 水热合成, Co3O4八面体, 草酸根, AP分解

Abstract: Co3 O4 octahedra exposing eight ( 111 ) facets were hydrothermally synthesized with the assistance of C 2 O2-4 .The prepared samples were characterized and analyzed by means of XRD , SEM, TEM and HRTEM.The results indicate that the Co3O4 octahedra exhibited cubic phase with high crystallinity.The influence of reaction time, reaction temperature and C2O2 -4 concentration on the morphology of Co 3 O4 were investigated in detail .It is prove that C 2 O2-4 would preferably adsorb on the (111) facets of Co3O4 nuclei, which would then restrict the further growth of (111) facets due to the larger space of C2O2 -4 than hydroxyl groups leading to the exposure of (111) facets.The present Co3O4 octahedra could catalyze the thermal decomposition of ammonium perchlorate ( AP) effectively due to the exposure of high energy facets .

Key words: hydrothermal synthesis, Co3 O4 octahedra, C2 O2 -4, AP decomposition

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