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人工晶体学报 ›› 2022, Vol. 51 ›› Issue (7): 1309-1319.

• 综合评述 • 上一篇    下一篇

Co3O4在多相催化反应中的晶面效应

胡慧敏1, 邢向英2, 韩宇静2, 王会香2, 吕宝亮2   

  1. 1.华阳集团(山西)纤维新材料有限责任公司,阳泉 045200;
    2.中国科学院山西煤炭化学研究所,太原 030001
  • 收稿日期:2022-02-25 出版日期:2022-07-15 发布日期:2022-08-11
  • 通讯作者: 王会香,助理研究员。E-mail:wanghx@sxicc.ac.cn
  • 作者简介:胡慧敏(1987—),男,山西省人,工程师。E-mail:hum1986@163.com
  • 基金资助:
    国家自然科学基金(21972158);山西省青年基金(201901D211583);山西省优秀博士科研启动基金(SQ2019006)

Crystal Facet Effect of Co3O4 in Heterogeneous Catalytic Reaction

HU Huimin1, XING Xiangying2, HAN Yujing2, WANG Huixiang2, LYU Baoliang2   

  1. 1. Huayang Group (Shanxi) New Fiber Materials Co., Ltd., Yangquan 045200, China;
    2. Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
  • Received:2022-02-25 Online:2022-07-15 Published:2022-08-11

摘要: Co3O4是一种重要且性能优异的过渡金属氧化物,可以广泛应用于光、电、磁、热等多个领域,其晶体作为多相催化剂在众多反应中有着不可替代的地位。催化机理研究发现,催化反应过程不但受晶体催化剂颗粒尺寸的影响,而且对晶体的晶面也很敏感。因此,晶面效应的研究对于深入认识多相催化反应过程以及有效设计高活性催化剂都有重要意义。Co3O4晶体具有Co3+和Co2+混合价态的尖晶石结构,其在不同催化反应中均表现出明显的晶面效应。本文综述了近年来Co3O4作为多相晶体催化剂在热催化、光催化、电催化以及类过氧化物酶催化中的晶面效应,结合理论计算结果从Co3O4晶面的原子结构出发解释了产生晶面效应的原因;最后总结了Co3O4在以上反应中晶面效应的一般规律,探讨了目前Co3O4晶面效应研究中的不足,并对未来的发展趋势进行了展望。

关键词: Co3O4, 过渡金属氧化物, 晶体催化剂, 晶面效应, 原子排布, 多相催化, 理论计算

Abstract: As one of the important transition metal oxides, Co3O4 possesses an excellent property, which leads to the fact that Co3O4 is widely used in optical, electrical, magnetic, thermal and other fields. The crystals of Co3O4 can be used as heterogeneous catalytic materials and thereby have an irreplaceable position in many reactions. With the continuous study of the catalytic mechanism, it is found that the catalytic reaction process is not only affected by the particle size of the crystal catalyst, but also is sensitive to the crystal facet. Therefore, the study on crystal facet effect of transition metal oxides is of great significance for the in-depth understanding of heterogeneous catalytic reactions and the effective design of high-active catalysts. Co3O4 crystal has spinel structure with a mixed valence state of octahedral coordinated Co3+ and tetrahedral coordinated Co2+, and it shows the obvious crystal facet effect in different catalytic reactions. In this paper, the crystal facet effects of Co3O4 as heterogeneous crystal catalyst in thermal catalysis, photocatalysis, electrocatalysis and peroxidase-like catalysis in recent years are systematically reviewed. In combination with theoretical calculations, the reasons of these crystal facet effects are explained from the atomic structure of different crystal facets of Co3O4. Finally, the general law of crystal facet effect of Co3O4 in the above reactions is summarized, the shortcomings in current study on Co3O4 crystal facet effect are discussed, and the future development trend is reasonably prospected.

Key words: Co3O4, transition metal oxide, crystal catalyst, crystal facet effect, atomic arrangement, heterogeneous catalysis, theoretical calculation

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