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首页> 外文期刊>Journal of Materials Science >MOF-derived NiO/CeO(2)heterojunction: a photocatalyst for degrading pollutants and hydrogen evolution
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MOF-derived NiO/CeO(2)heterojunction: a photocatalyst for degrading pollutants and hydrogen evolution

机译：MOF衍生的NIO / CEO（2）异质结：用于降解污染物和氢气进化的光催化剂

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摘要

A NiO/CeO(2)p-nheterojunction with the hierarchically porous microspheres was fabricated by annealing the precursor of the nickel/cerium mixed-metal metal-organic frameworks. The morphologies, microstructures, composition, specific surface area, photogenerated electron-hole pair separation/transfer, and photocatalytic activities were characterized for all acquired catalysts. The photodegradation rates of organic dyes including methyl orange and methylene blue were investigated under ultraviolet light. The NiO/CeO(2)heterojunctions showed a much higher photocatalytic performance than that of pure NiO and CeO2. Among all photocatalysts NiO/CeO2-3 presented the best photocatalytic activity, i.e., the degradation of MO was 2.6 times higher than pure NiO under ultraviolet light, and the hydrogen generation with the rate of about 29.6 mu mol h(-1) g(-1). The improved photocatalytic performance could be ascribed to the formation of the NiO/CeO(2)p-nheterojunction, which is beneficial for effective separation and fast transfer of the photoexcited electron-hole pairs.
机译：甲的NiO /铈（2）对 - nheterojunction与分级多孔微球通过退火镍/铈混合金属金属有机骨架的前体制造的。形貌，微结构，组成，比表面积，光生电子 - 空穴对分离/传送，和光催化活性进行了表征为所有获得的催化剂。有机染料，包括甲基橙和亚甲基蓝的光降解速率在紫外线光下进行了调查。所述的NiO /铈（2）异质结显示出比纯的NiO和CeO2的高得多的光催化性能。在所有的光催化剂的NiO / CeO2-3呈现最好的光催化活性，即，MO的降解较纯的NiO的2.6倍在紫外光下，与氢生成具有约29.6微米的速率摩尔H（-1）克（ -1）。改进的光催化性能可以归因于在形成的NiO /铈（2）对 - nheterojunction，中的哪一个有效的分离和光激电子 - 空穴对的快速传输是有益的。

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  • 来源
    《Journal of Materials Science》 |2020年第33期|共15页
  • 作者

    Li Pengfei; Zhang Ming; Li Xuewei; Wang Chao; Wang Ruzhi; Wang Bo; Yan Hui;

  • 作者单位

    Beijing Univ Technol Minist Educ China Key Lab Adv Funct Mat Beijing 100124 Peoples R China;

    Beijing Univ Technol Minist Educ China Key Lab Adv Funct Mat Beijing 100124 Peoples R China;

    Beijing Univ Technol Minist Educ China Key Lab Adv Funct Mat Beijing 100124 Peoples R China;

    Beijing Univ Technol Minist Educ China Key Lab Adv Funct Mat Beijing 100124 Peoples R China;

    Beijing Univ Technol Minist Educ China Key Lab Adv Funct Mat Beijing 100124 Peoples R China;

    Beijing Univ Technol Minist Educ China Key Lab Adv Funct Mat Beijing 100124 Peoples R China;

    Beijing Univ Technol Minist Educ China Key Lab Adv Funct Mat Beijing 100124 Peoples R China;

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  • 正文语种 eng
  • 中图分类 工程材料学;
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