Internal Polarization Modulation in Bi2MoO6 for Photocatalytic Performance Enhancement under Visible-Light Illumination
文献类型：期刊论文
| 作者 | Chen, Y; Yang, WY; Gao, S; Zhu, LG; Sun, CX; Li, Q; Li, Q (reprint author), Chinese Acad Sci, Environm Funct Mat Div, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China. |
| 刊名 | CHEMSUSCHEM
 |
| 出版日期 | 2018-05-09 |
| 卷号 | 11期号:9页码:1521-1532 |
| 关键词 | Total-energy Calculations Wave Basis-set Heterogeneous Photocatalysis Hydrothermal Synthesis Controllable Synthesis Carrier Separation Electric-field Water Degradation Tio2 |
| ISSN号 | 1864-5631 |
| 英文摘要 | A built-in electric field from polarization inside polar photocatalysts could provide the driving force for photogenerated electrons and holes to move in opposite directions for better separation to improve their photocatalytic performance. The photocatalytic performance of a polar photocatalyst of Bi2MoO6 has been enhanced through the precise control of its structure to increase internal polarization. DFT calculations predicted that a shortened crystal lattice parameter b in Bi2MoO6 could induce larger internal polarization, which was achieved by the modulation of the pH of the reaction solution during a solvothermal synthetic process. A series of Bi2MoO6 samples were created with reaction solutions of pH approximate to 1, 4, and 8; the crystal lattice parameter b was found to decrease gradually with increasing solution pH. Accordingly, these Bi2MoO6 samples demonstrated a gradually enhanced photocatalytic performance with decreasing crystal lattice parameter b, as demonstrated by the photocatalytic degradation of sulfamethoxazole/phenol and disinfection of Staphylococcus aureus bacteria under visible-light illumination due to improved photogenerated charge-carrier separation. This study demonstrates an innovative design strategy for materials to further enhance the photocatalytic performance of polar photocatalysts for a broad range of technical applications.; A built-in electric field from polarization inside polar photocatalysts could provide the driving force for photogenerated electrons and holes to move in opposite directions for better separation to improve their photocatalytic performance. The photocatalytic performance of a polar photocatalyst of Bi2MoO6 has been enhanced through the precise control of its structure to increase internal polarization. DFT calculations predicted that a shortened crystal lattice parameter b in Bi2MoO6 could induce larger internal polarization, which was achieved by the modulation of the pH of the reaction solution during a solvothermal synthetic process. A series of Bi2MoO6 samples were created with reaction solutions of pH approximate to 1, 4, and 8; the crystal lattice parameter b was found to decrease gradually with increasing solution pH. Accordingly, these Bi2MoO6 samples demonstrated a gradually enhanced photocatalytic performance with decreasing crystal lattice parameter b, as demonstrated by the photocatalytic degradation of sulfamethoxazole/phenol and disinfection of Staphylococcus aureus bacteria under visible-light illumination due to improved photogenerated charge-carrier separation. This study demonstrates an innovative design strategy for materials to further enhance the photocatalytic performance of polar photocatalysts for a broad range of technical applications. |
| 学科主题 | Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology |
| 语种 | 英语 |
| 资助机构 | Basic Science Innovation Program of Shenyang National Laboratory for Materials Science [Y4N56R1161, Y5N56F2161]; National Natural Science Foundation of China [51672283, 51602316]; Natural Science Foundation of Shandong Province, PR China [ZR2017MEM017] |
| 公开日期 | 2018-06-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79311]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Li, Q (reprint author), Chinese Acad Sci, Environm Funct Mat Div, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Chen, Y,Yang, WY,Gao, S,et al. Internal Polarization Modulation in Bi2MoO6 for Photocatalytic Performance Enhancement under Visible-Light Illumination[J]. CHEMSUSCHEM,2018,11(9):1521-1532. |
| APA | Chen, Y.,Yang, WY.,Gao, S.,Zhu, LG.,Sun, CX.,...&Li, Q .(2018).Internal Polarization Modulation in Bi2MoO6 for Photocatalytic Performance Enhancement under Visible-Light Illumination.CHEMSUSCHEM,11(9),1521-1532. |
| MLA | Chen, Y,et al."Internal Polarization Modulation in Bi2MoO6 for Photocatalytic Performance Enhancement under Visible-Light Illumination".CHEMSUSCHEM 11.9(2018):1521-1532. |
入库方式： OAI收割
来源：金属研究所
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