Core@Shell structured coal fly ash Magnetospheres@C/g-C3N4 for degradation of Rh B via photo-Fenton catalysis
文献类型：期刊论文
| 作者 | Zhang, Xiaomin2; Yuan, Xinrui2; Yu, Jie3; He, Panyang2; Chen, Tianxing2; Zhang, Liang1; Wang, Ke2 ; Hua, Xinrui2; Zhu, Pei2
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| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2022-07-05 |
| 卷号 | 908 |
| ISSN号 | 0925-8388 |
| 关键词 | Coal fly ash magnetospheres G-C3N4 Photo-Fenton Dye wastewater Core@shell |
| DOI | 10.1016/j.jallcom.2022.164441 |
| 通讯作者 | Zhang, Xiaomin(xmzhang@xauat.edu.cn) |
| 英文摘要 | The photo-Fenton technology has shown widespread application potential in the degradation of wastewater. Herein, solid waste coal fly ash magnetospheres (MS) composed of a large amount of Fe3O4 and Fe2O3 were used as raw materials to prepare a novel photo-Fenton catalyst MS@C/g-C3N4. The SEM characterization results showed MS@C had a special core@shell structure with many micro-cracks, and for MS@C/g-C3N4 , the g-C(3)N(4 )nanosheets not only intersperse in the cracks of MS@C, but also adhere to the surface of MS@C. The FTIR characterization results showed the little changes of the peaks corresponding to-CN heterocycles in MS@C/g-C(3)N(4 )may be caused by the interaction between g-C(3)N(4 )and MS@C. The photo Fenton performance of MS@C/g-C(3)N(4 )composites was evaluated by degrading of Rh B. MS@C/g-C(3)N(4 )composites displayed the highest rate constant (0.1532 min(-1)) than MS@C (0.0671 min(-1)) and pure g-C3N4 (0.0018 min(-1))as well as samples of mixture of MS@C and g-C3N4 (0.0745 min(-1)) due to the presence of the synergistic effect between photocatalysis and Fenton reaction. The effects of carbon shells thickness, H2O2 concentration, Rh B concentration and pH value on the photo-Fenton degradation of Rh B by MS@C/g-C(3)N(4 )were studied. The ICP results showed that the carbon shells had an inhibitory effect on the leaching of iron ions, and the optimal photo-Fenton degradation conditions were H2O2 concentration of 50 mmol/L, Rh B concentration of 100 mg/L and pH = 3. The recycle experiment showed that the degradation rate of MS@C/C(3)N(4 )composites was only slightly decreased about 5% after four cycles, and the XRD results for the fresh MS@C/g-C(3)N(4 )and used MS@C/g-C(3)N(4 )showed that there were no obvious changes occurred in the crystal structure after fourth cycle, which indicated that MS@C/g-C(3)N(4 )possessed excellent stability. The main active species were & BULL;OH and h+ in this system, and a possible photo-Fenton mechanism was proposed. The carbon shells (coated on MS) could enhance the separation efficiency of photogenerated electron-hole pairs of g-C3N4. In addition, the leached iron ions in MS@C/g-C(3)N(4 )could be anchored to the surface by the pyridine nitrogen in g-C(3)N(4)to form Fe-N bonds, which could accelerate the transfer of electrons and be regarded as the active site in the Fenton reaction. (C) 2022 Published by Elsevier B.V. |
| WOS关键词 | Z-SCHEME PHOTOCATALYST ; CARBON NITRIDE G-C3N4 ; COMPOSITE PHOTOCATALYST ; HYDROGEN-PRODUCTION ; HYDROTHERMAL SYNTHESIS ; ORGANIC POLLUTANTS ; RHODAMINE-B ; NANOCOMPOSITE ; PERFORMANCE ; FABRICATION |
| 资助项目 | Key R&D Program of Xianyang Science and Technology Bureau[2021ZDYF-GY-0034] ; National Natural Science Foundation of China[51874223] ; Project of Science and Technology R&D Project of Jiugang Group[4500618489] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000806389200001 |
| 资助机构 | Key R&D Program of Xianyang Science and Technology Bureau ; National Natural Science Foundation of China ; Project of Science and Technology R&D Project of Jiugang Group |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/131273]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhang, Xiaomin |
| 作者单位 | 1.Xian Univ Architecture & Technol, Sch Chem & Chem Engn, Xian 710055, Shaanxi, Peoples R China 2.Xian Univ Architecture & Technol, Sch Resources Engn, Xian 710055, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Anhui Key Lab Nanomat & Nanotechnol, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Xiaomin,Yuan, Xinrui,Yu, Jie,et al. Core@Shell structured coal fly ash Magnetospheres@C/g-C3N4 for degradation of Rh B via photo-Fenton catalysis[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,908. |
| APA | Zhang, Xiaomin.,Yuan, Xinrui.,Yu, Jie.,He, Panyang.,Chen, Tianxing.,...&Zhu, Pei.(2022).Core@Shell structured coal fly ash Magnetospheres@C/g-C3N4 for degradation of Rh B via photo-Fenton catalysis.JOURNAL OF ALLOYS AND COMPOUNDS,908. |
| MLA | Zhang, Xiaomin,et al."Core@Shell structured coal fly ash Magnetospheres@C/g-C3N4 for degradation of Rh B via photo-Fenton catalysis".JOURNAL OF ALLOYS AND COMPOUNDS 908(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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