| 张晓杰.Ag3PO4/Palygorskite的静电调控合成及可见光催化降解罗丹明B和气相异丙醇[J].分子催化,2015,(5):467-475 |
| Ag3PO4/Palygorskite的静电调控合成及可见光催化降解罗丹明B和气相异丙醇 |
| Visible light induced Rh B decolorization and 2-propanol degrdation over Ag3PO4/Palygorskite synthesized through electrstatic attractions |
| 投稿时间：2015-10-28 修订日期：2015-11-03 |
| DOI： |
| 中文关键词: 磷酸银/凹凸棒 罗丹明B脱色 异丙醇降解 可见光 |
| 英文关键词:Ag3PO4/palygorskite Rh B decolorization 2-propanol degradation Visible light |
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| 中文摘要: |
| 以大比表面的廉价易得的凹凸棒(palygorskite)为载体，借助带电荷界面的静电调控作用，采用吸附-沉积沉淀方法制备磷酸银/凹凸棒(Ag3PO4/palygorskite)复合催化剂。利用X-射线衍射仪(XRD)、场发射扫描电子显微镜(FE-SEM)、原子吸收光谱(AAS)、紫外可见漫反射光谱(UV-Vis DRS)等技术系统地表征催化剂。之所以能够制备高分散性的凹凸棒负载的磷酸银催化剂，主要是因为凹凸棒具有较大的比表面积、带负电荷界面以及适宜的磷酸根前驱体。以可见光催化脱色降解罗丹明B和氧化降解异丙醇为探针反应，考察复合材料的催化性能。研究表明，与纯磷酸银相比，磷酸银/凹凸棒催化脱色降解罗丹明B和氧化降解异丙醇速率分别提高了2和2.5倍。 |
| 英文摘要: |
| Ag3PO4/palygorskite composite was prepared by an in situ electrostatic adsorption -deposition-precipitation method and characterized by field emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD), UV-Vis diffuse reflection, and BET surface measurements techniques. The layer negative charge and larger specific surface area of palygorskite, along with the suitable PO43- precursor, could mainly account for high dispersity of Ag3PO4 on the surface of fibrous palygorskite. The activity of the composites was evaluated by the decolorization of the cationic Rohdamine B (Rh B) dye and the degradation of 2-propanol under visible light irradiation. The rate of Rh B decolorization and 2-propanol degradation over Ag3PO4/palygorskite was about 2 and 2.5 times faster than that of the corresponding bare Ag3PO4, re-spectively. |
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