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Preparation, characterization, and photocatalytic properties of silver carbonate

机译：碳酸银的制备，表征及光催化性能

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摘要

Silver carbonate (Ag_2CO_3) short rods were prepared using a precipitation method. It was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflective spectra (DRS) and photocatalytic degradation of organic pollutants and destruction of E. coli measurements. The results of DRS suggested that the optical transition of Ag_2CO_3 was indirectly allowed, and its band gap was determined to be 2.08 eV. The prepared Ag_2CO_3 displayed a high activity towards degradation of phenol and MB under visible light. The total organic carbon (TOC) value decreased during the photocatalytic process, which suggests that phenol was truly photodegraded. The stability of Ag_2CO_3 was greatly improved when Na_2CO_3 was added into the photocatalytic system. In addition, Ag_2CO_3 displayed enhanced photocatalytic activities for the destruction of E. coli due to its photogenerated electron-hole pairs.
机译：采用沉淀法制备了碳酸银（Ag_2CO_3）短棒。它的特征在于X射线衍射（XRD），扫描电子显微镜（SEM），漫反射光谱（DRS）和有机污染物的光催化降解以及大肠杆菌的破坏。 DRS的结果表明，间接允许了Ag_2CO_3的光学跃迁，其带隙确定为2.08 eV。制备的Ag_2CO_3在可见光下对酚和MB的降解表现出高活性。在光催化过程中，总有机碳（TOC）值下降，这表明苯酚确实被光降解了。将Na_2CO_3加入光催化体系可大大提高Ag_2CO_3的稳定性。另外，由于Ag_2CO_3的光生电子-空穴对，其对大肠杆菌的破坏显示出增强的光催化活性。

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  • 来源
    《Applied Surface Science》 |2011年第20期|p.8732-8736|共5页
  • 作者

    Chengwei Xu; Yuanyuan Liu; Baibiao Huang; Hui Li; Xiaoyan Qin; Xiaoyang Zhang; Ying Dai;

  • 作者单位

    Department of Laboratory Medicine, The Second Hospital of Shandong University, Jinan 250033, PR China;

    State Key Lab of Crystal Materials, Shandong University,Jinan 250100, PR China;

    State Key Lab of Crystal Materials, Shandong University,Jinan 250100, PR China;

    Department of Chemistry, Shandong Experimental Senior High School, Jinan.250001, PR China;

    State Key Lab of Crystal Materials, Shandong University,Jinan 250100, PR China;

    State Key Lab of Crystal Materials, Shandong University,Jinan 250100, PR China;

    School of Physics, Shandong University,Jinan 250100, PR China;

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  • 正文语种 eng
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  • 关键词

    silver carbonate; photocatalysis; antibacterial activity;

    机译：碳酸银光催化;抗菌活性;

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