| 陆啸宇,黄佳楠,张栋梁,王觅堂.Pr、Zn共掺杂Cu2O催化剂的制备及其光催化降解甲基橙的研究[J].有色金属材料与工程,2024,45(4):93-99. |
| Pr、Zn共掺杂Cu2O催化剂的制备及其光催化降解甲基橙的研究 |
| Preparation of Pr and Zn co-doped Cu2O catalysts and their photocatalytic degradation of methyl orange |
| |
| DOI：10.13258/j.cnki.nmme.20230321002 |
| 中文关键词: 光催化 共掺杂 稀土 降解 |
| 英文关键词:photocatalytic co-doping rare earths degradation |
| 基金项目:国家自然科学基金资助项目(51974168)；内蒙古自治区科技重大专项资助项目(2019ZD023; 2021ZD0028) |
|
| 摘要点击次数: 0 |
| 全文下载次数: 2 |
| 中文摘要: |
| 为增强Cu2O对模拟染料甲基橙(methyl orange，MO)的降解效果，采用液相还原法制备了Pr、Zn共掺杂Cu2O光催化材料。通过X射线衍射仪(X–ray diffractometer，XRD)、扫描电子显微镜(scanning electron microscope, SEM)、紫外-可见分光光度计(ultraviolet–visible spectroscopy，UV–Vis)等技术手段表明：Pr和Zn共掺杂Cu2O光催化剂的平均晶粒尺寸相较于纯Cu2O的略微减小，表现为颗粒尺寸的缩小和表面的活性位点增加；Pr、Zn的掺入降低了Cu2O的带隙和光生电子–空穴对复合率，表现为更好的光催化性能。在对MO的降解实验中，75 min时PZ3-Cu2O对20 mg/L MO的降解效果最佳，降解率达到89.87%，且经过5次循环使用后其降解率仍保持在85%以上。研究得出，共掺杂改性后的Cu2O是一种有较高光催化活性且稳定的光催化剂。 |
| 英文摘要: |
| Pr and Zn co-doped Cu2O photocatalytic materials were prepared by a liquid-phase reduction method to enhance the degradation of the simulated dye methyl orange (MO) by Cu2O. The Pr and Zn co-doped Cu2O photocatalysts were evaluated by X-ray diffractometer (XRD), scanning electron microscope (SEM) and ultraviolet-visible spectroscopy (UV-Vis). UV-Vis showed that the average grain size of the prepared Pr and Zn co-doped Cu2O photocatalysts decreased slightly compared with that of pure Cu2O, showing a reduction in particle size and an increase in the active sites on the surface, the doping of Pr and Zn reduced the band gap and photogenerated electron-hole pair complexation rate of Cu2O, showing better photocatalytic performance. In the degradation experiments on MO, the best degradation effect of PZ3-Cu2O on 20 mg/L MO was achieved at 75 min with 89.87% degradation rate, remaining over 85% after five cycles. The study shows that the co-doped Cu2O is a high photocatalytic activity and stable photocatalyst with promising application in the treatment of MO wastewater. |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
