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首页> 外文期刊>Journal of Materials Research >Preparation and characterization of mesoporous g-C_3N_4/ SiO_2 material with enhanced photocatalytic activity
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Preparation and characterization of mesoporous g-C_3N_4/ SiO_2 material with enhanced photocatalytic activity

机译：增强光催化活性的中孔G-C_3N_4 / SiO_2材料的制备与表征

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摘要

Composite materials include various components with different structures, which cooperatively increase their properties and extend their application. In this study, the graphitic carbon nitride (g-C3N4) guest material was assembled into the porous of the SiO2 aerogel, which was prepared during the gel process. By this way, the g-C3N4 could be absolutely encapsulated into the porous of the disordered porous SiO2 aerogel. The prepared g-C3N4/SiO2 composite had a loose porous structure and exhibited the much higher photocatalytic activity to the photodegradation of rhodamine B (RhB) under visible light. The disordered porous structure enhanced photocatalytic activity, and the degradation rate reached to 96.42% in 90 min under the irradiation of visible light, which could be attributed to its high surface area and effective electron-hole separation rate. The catalyst had the much higher stability and could be easily recycled utilization. The prepared composites could be applied to degrade organic pollutants in wastewater.
机译：复合材料包括具有不同结构的各种组分，其协同增加其性质并延长其应用。在该研究中，将石墨碳氮化物（G-C3N4）的客体材料组装成在凝胶过程中制备的SiO 2气凝胶的多孔。通过这种方式，G-C3N4可以绝对被包封成无序多孔SiO2气凝胶的多孔。制备的G-C3N4 / SiO 2复合材料具有松散的多孔结构，并在可见光下表现出罗丹明B（RHB）的光降解的更高的光催化活性。无序的多孔结构增强了光催化活性，并且在可见光照射下90分钟内的降解速率达到96.42％，这可能归因于其高表面积和有效的电子空穴分离率。催化剂具有更高的稳定性，并且可以容易地再循环利用。可以应用制备的复合材料来降解废水中的有机污染物。

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  • 来源
    《Journal of Materials Research》 |2019年第10期|1785-1794|共10页
  • 作者

    Peng Li; Li Zi-wei; Zheng Ren-rong; Yu Hui; Dong Xiang-ting;

  • 作者单位

    Changchun Univ Sci & Technol Sch Chem & Environm Engn Changchun 130022 Jilin Peoples R China;

    Changchun Univ Sci & Technol Sch Chem & Environm Engn Changchun 130022 Jilin Peoples R China;

    Changchun Univ Sci & Technol Sch Chem & Environm Engn Changchun 130022 Jilin Peoples R China;

    Changchun Univ Sci & Technol Sch Chem & Environm Engn Changchun 130022 Jilin Peoples R China;

    Changchun Univ Sci & Technol Sch Chem & Environm Engn Changchun 130022 Jilin Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    SiO2 aerogel; g-C3N4; g-C3N4; SiO2 composite; photocatalytic degradation; rhodamine B; visible light;

    机译：SiO2气凝胶;G-C3N4;G-C3N4;SiO2复合材料;光催化降解;罗丹明B;可见光;

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