Magnetic photocatalytic nano-semiconductors prepared from carbon quantum dots compounded with copper ferrate and their application in dye wastewater treatment
文献类型：期刊论文
| 作者 | Shi, Keren2; Qian, Guangyan2,5; Yi, Wende2; Tang, Wufei1,3; Liu, Fang4; Li, Yong4; Yang, Changyi5; Xiang, Yuxiang2; Yao, Huiqin5 |
| 刊名 | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
 |
| 出版日期 | 2024-02-01 |
| 卷号 | 12期号:1页码:9 |
| 关键词 | Photocatalyst Azo dyes Magnetic recyclable Electromigration CQDs/CuFe2O4 |
| ISSN号 | 2213-2929 |
| DOI | 10.1016/j.jece.2023.111737 |
| 英文摘要 | To investigate new and potent photocatalytic materials for organic pollutants, in this work, copper ferrate (CuFe2O4) nanoparticles were synthesized by sol-gel combustion method and then combined with the microwave synthesis method to prepare CQDs/CuFe2O4, which was used for the degradation of methylene blue (MB) dye. Firstly, scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), photoluminescence spectroscopy (PL), UV-visible diffuse reflectance spectroscopy (UV-vis DRS), and electrochemistry were employed to validate the composite effect of CQDs/CuFe2O4. The MB removal (99.86%) was maximized under the optimal conditions (1.5% CQDs/CuFe2O4, 10 mg/L, pH 7.0). Meanwhile, the recycling performance after magnet adsorption and recovery and the effects of carbon quantum dots (CQDs) dosing (0.5% similar to 3%), dye concentration (10 mg/L similar to 30 mg/L), and pH (3.0 similar to 11.0) on the degradation of MB dye by the CQDs/CuFe2O4 system were comprehensively investigated. Finally, based on the findings of the free radical scavenging experiments, the photocatalytic mechanism is proposed that the high catalytic activity of CQDs/CuFe2O4 is owed to its high specific surface area, narrow bandgap, and multiple active sites. On account of the introduction of the CQDs, the rate of electron mobility is improved and carrier complexation is reduced. In conclusion, the present work provides an effective photocatalytic system for removing organic pollutants by CQDs/CuFe2O4 composites at room temperature under neutral conditions. |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001143389300001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/76085]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Tang, Wufei; Yang, Changyi; Yao, Huiqin |
| 作者单位 | 1.Hunan Univ Sci & Engn, Coll Chem & Bioengn, Hunan Engn Technol Res Ctr Comprehens Dev & Utiliz, Yongzhou 425199, Peoples R China 2.Ningxia Univ, State Key Lab High Efficiency Coal Utilizat & Gree, Yinchuan 750021, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China 4.YongZhou Prod & Commod Qual Supervison & Inspectio, Yongzhou 425000, Peoples R China 5.Ningxia Med Univ, Gen Hosp, Coll Basic Med, Yinchuan 750004, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Keren,Qian, Guangyan,Yi, Wende,et al. Magnetic photocatalytic nano-semiconductors prepared from carbon quantum dots compounded with copper ferrate and their application in dye wastewater treatment[J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,2024,12(1):9. |
| APA | Shi, Keren.,Qian, Guangyan.,Yi, Wende.,Tang, Wufei.,Liu, Fang.,...&Yao, Huiqin.(2024).Magnetic photocatalytic nano-semiconductors prepared from carbon quantum dots compounded with copper ferrate and their application in dye wastewater treatment.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,12(1),9. |
| MLA | Shi, Keren,et al."Magnetic photocatalytic nano-semiconductors prepared from carbon quantum dots compounded with copper ferrate and their application in dye wastewater treatment".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 12.1(2024):9. |
入库方式： OAI收割
来源：广州地球化学研究所
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