| 赵文武,曹紫玉,宋梦晗,王秀文,李泽宇,刘剑.铁尾矿砂光催化剂的制备及其光催化性能研究[J].唐山学院学报,2022,35(3):83-87 |
| 铁尾矿砂光催化剂的制备及其光催化性能研究 |
| Study on Preparation and Photocatalytic Properties of Iron Tailing Sand Photocatalyst |
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| DOI：10.16160/j.cnki.tsxyxb.2022.03.013 |
| 中文关键词: 熔融-水热法 铁尾矿砂 光催化剂 罗丹明B溶液 降解 |
| 英文关键词: melting-hydrothermal method iron tailing sand photocatalyst solution of Rhodamine B degradation |
| 基金项目:河北省大中学生科技创新能力培育专项(2021H020601) |
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| 中文摘要: |
| 以铁尾矿砂为原料,用NaOH,HNO3调节pH值,采用熔融-水热两步法制备了铁尾矿砂光催化剂。利用X射线衍射仪、紫外/可见/近红外光谱仪等对铁尾矿砂光催化剂的结构性能进行表征;以罗丹明B溶液为标准降解物,汞灯为光源,探讨在不同pH条件下合成的铁尾矿砂光催化剂的光催化活性。结果表明,铁尾矿砂光催化剂的主要成分为Fe2.35Si0.65O4和NaNO3,且具有良好的光催化效果;在pH 8.5条件下制备的样品具有多孔结构,光催化性能最强;光照120 min时此样品可降解95.1%的罗丹明B溶液;·O2-是光催化反应过程中最主要的氧化活性自由基。 |
| 英文摘要: |
| The iron tailing sand photocatalyst has been prepared by melting-hydrothermal methods with iron tailing sand as raw material,and NaOH and HNO3 as pH conditioning agent. The structure properties of the photocatalyst are characterized by X-ray diffractometer and ultraviolet/visible/near infrared spectrophotometer. Using Rhodamine B as the target degradation product and mercury lamp as the light source,this paper studies the photocatalytic activity of this photocatalyst synthesized under different pH conditions. The results show that the main components of iron tailings photocatalyst are Fe2.35Si0.65O4 and NaNO3,and it has shown good photocatalytic effect. The samples prepared at pH 8.5 have porous structure and perform the strongest photocatalytic effect:the degradation rate of Rhodamine B is 95.1% after 120-min illumination;·O2- is the most important oxidizing active free radical in photocatalytic reactions. |
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