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| DOI | 10.3390/molecules27061859 |
| Light Promotes the Immobilization of U(VI) by Ferrihydrite | |
| Wang, Yun; Wang, Jingjing; Ding, Zhe; Wang, Wei; Song, Jiayu; Li, Ping; Liang, Jianjun; Fan, Qiaohui | |
| 通讯作者 | Li, P (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China. ; Li, P (通讯作者)，Minist Nat Resources, Key Lab Strateg Mineral Resources Upper Yellow Ri, Lanzhou 730000, Peoples R China. ; Li, P (通讯作者)，Key Lab Petr Resources, Lanzhou 730000, Peoples R China. |
| 发表日期 | 2022 |
| EISSN | 1420-3049 |
| 卷号 | 27期号:6 |
| 英文摘要 | The environmental behaviors of uranium closely depend on its interaction with natural minerals. Ferrihydrite widely distributed in nature is considered as one main natural media that is able to change the geochemical behaviors of various elements. However, the semiconductor properties of ferrihydrite and its impacts on the environmental fate of elements are sometimes ignored. The present study systematically clarified the photocatalysis of U(VI) on ferrihydrite under anaerobic and aerobic conditions, respectively. Ferrihydrite showed excellent photoelectric response. Under anaerobic conditions, U(VI) was converted to U(IV) by light-irradiated ferrihydrite, in the form of UO2+x (x < 0.25), where center dot O-2 (-) was the dominant reactive reductive species. At pH 5.0, similar to 50% of U(VI) was removed after light irradiation for 2 h, while 100% U(VI) was eliminated at pH 6.0. The presence of methanol accelerated the reduction of U(VI). Under aerobic conditions, the light illumination on ferrihydrite also led to an obvious but slower removal of U(VI). The removal of U(VI) increased from similar to 25% to 70% as the pH increased from 5.0 to 6.0. The generation of H2O2 under aerobic conditions led to the formation of UO4 center dot xxH(2)O precipitates on ferrihydrite. Therefore, it is proved that light irradiation on ferrihydrite significantly changed the species of U(VI) and promoted the removal of uranium both under anaerobic and aerobic conditions. |
| 关键词 | AQUEOUS-SOLUTIONORGANIC-MATTERDEGRADATIONADSORPTIONREDUCTIONPHOSPHATEREMOVAL |
| 英文关键词 | ferrihydrite; photocatalysis; U(VI/IV); uranium peroxides; immobilization |
| 语种 | 英语 |
| WOS研究方向 | Biochemistry & Molecular Biology ; Chemistry |
| WOS类目 | Biochemistry & Molecular Biology ; Chemistry, Multidisciplinary |
| WOS记录号 | WOS:000774540200001 |
| 来源期刊 | MOLECULES
 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/253833 |
| 作者单位 | [Wang, Yun; Wang, Jingjing; Ding, Zhe; Wang, Wei; Song, Jiayu; Li, Ping; Liang, Jianjun; Fan, Qiaohui] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Wang, Yun; Ding, Zhe; Wang, Wei; Song, Jiayu; Li, Ping; Liang, Jianjun; Fan, Qiaohui] Minist Nat Resources, Key Lab Strateg Mineral Resources Upper Yellow Ri, Lanzhou 730000, Peoples R China; [Wang, Yun; Wang, Jingjing; Ding, Zhe; Li, Ping; Liang, Jianjun; Fan, Qiaohui] Key Lab Petr Resources, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yun,Wang, Jingjing,Ding, Zhe,et al. Light Promotes the Immobilization of U(VI) by Ferrihydrite[J]. 中国科学院西北生态环境资源研究院,2022,27(6). |
| APA | Wang, Yun.,Wang, Jingjing.,Ding, Zhe.,Wang, Wei.,Song, Jiayu.,...&Fan, Qiaohui.(2022).Light Promotes the Immobilization of U(VI) by Ferrihydrite.MOLECULES,27(6). |
| MLA | Wang, Yun,et al."Light Promotes the Immobilization of U(VI) by Ferrihydrite".MOLECULES 27.6(2022). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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