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首页> 外文期刊>RSC Advances >Highly improved visible-light-induced photocatalytic performance over BiOI/Ag2CO3 heterojunctions
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Highly improved visible-light-induced photocatalytic performance over BiOI/Ag2CO3 heterojunctions

机译：高度改善的可见光诱导的光催化性能通过BIOI / Ag2Co3异质结

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摘要

A novel BiOI/Ag2CO3 composite was synthesized through the co-precipitation method and well characterized by X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, UV-vis diffuse reflectance spectroscopy and photoluminescence spectroscopy. Its photocatalytic activity was evaluated for degrading various pollutants (rhodamine B, methylene blue, methyl orange) and phenol aqueous solution. Experimental results indicated that Ag2CO3 nanoparticles anchored on the BiOI sheet surface promoted the enhanced photocatalytic activity. Moreover, when the mass ratio of BiOI in BiOI/Ag2CO3 composites was 20%, the as-prepared BiOI/Ag2CO3 (20 wt%) composite exhibited the optimal photocatalytic activity for degrading rhodamine B; its rate constant was approximately 6.75 and 4.3 times higher than the separate BiOI and Ag2CO3. The enhanced photocatalytic performance could be attributed to the heterojunctions between BiOI and Ag2CO3. Furthermore, the possible mechanism for photodegradation over the BiOI/Ag2CO3 composite is proposed.
机译：通过共沉淀法合成了一种新型的BioI / Ag2Co3复合材料，并通过X射线衍射，傅里叶变换红外光谱，X射线光电子能谱，扫描电子显微镜，透射电子显微镜，能量分散X射线光谱，UV -VIS弥射反射光谱和光致发光光谱。评估其光催化活性以降解各种污染物（罗丹明B，亚甲基蓝，甲基橙）和酚类水溶液。实验结果表明，锚定在生物板表面上的Ag2CO3纳米粒子促进了增强的光催化活性。此外，当BioI / Ag2CO 3复合材料中的Bioi的质量比为20％时，制备的BioI / Ag 2 CO 3（20wt％）复合材料表现出用于降解罗丹明B的最佳光催化活性。其速率常数比单独的生物和Ag2Co3高约6.75％和4.3倍。增强的光催化性能可归因于生物和Ag2Co3之间的异质功能。此外，提出了通过BioI / Ag2CO3复合材料进行光降解的可能机制。

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  • 来源
    《RSC Advances》 |2018年第1期|共10页
  • 作者

    Wang Nan; Shi Lei; Yao Lizhu; Lu Caiyun; Shi Yan; Sun Jianmin;

  • 作者单位

    Liaoning Shihua Univ Coll Chem Chem Engn &

    Environm Engn Fushun 113001 Peoples R China;

    Liaoning Shihua Univ Coll Chem Chem Engn &

    Environm Engn Fushun 113001 Peoples R China;

    Liaoning Shihua Univ Coll Chem Chem Engn &

    Environm Engn Fushun 113001 Peoples R China;

    Liaoning Shihua Univ Coll Chem Chem Engn &

    Environm Engn Fushun 113001 Peoples R China;

    Liaoning Shihua Univ Coll Chem Chem Engn &

    Environm Engn Fushun 113001 Peoples R China;

    Harbin Inst Technol Sch Chem &

    Chem Engn MIIT Key Lab Crit Mat Technol New Energy Convers State Key Lab Urban Water Resource &

    Environm Harbin 150080 Heilongjiang Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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