One-pot template-free synthesis, growth mechanism and enhanced photocatalytic activity of monodisperse (BiO)(2)CO3 hierarchical hollow microspheres self-assembled with single-crystalline nanosheets
文献类型：期刊论文
| 作者 | Dong, Fan1,2; Zheng, Anmin3; Sun, Yanjuan2; Fu, Min2; Jiang, Boqiong5; Ho, Wing-Kei6; Lee, S. C.1; Wu, Zhongbiao4 |
| 刊名 | CRYSTENGCOMM
 |
| 出版日期 | 2012 |
| 卷号 | 14期号:10页码:3534-3544 |
| 英文摘要 | This work presents a one-pot template-free synthesis, detailed characterization, growth mechanism and application of well-defined uniform monodisperse (BiO)(2)CO3 hierarchical hollow microspheres self-assembled with single-crystalline nanosheets. The synthesis was conducted by hydrothermal treatment of bismuth citrate and sodium carbonate in water. Time-dependent evolutions of phase structure, composition, and morphology were investigated systematically and revealed that the growth mechanism of such novel structures involved a unique multistep pathway. First, near amorphous particles were produced through reaction, nucleation, crystallization, and aggregation processes. Then, stacked embryos of intermediate (BiO)(4)CO3(OH)(2) microspheres with attached particles were produced due to dissolution and recrystallization. Subsequently, stacked uniform solid microspheres with small particles attached on edges were generated by the consumption of particles through Ostwald ripening. The stacked microspheres further grew to form monodisperse hierarchical microspheres with a hole in the center, like flower buds. Finally, uniform monodisperse (BiO)(2)CO3 hierarchical hollow microspheres were produced through layers splitting. The aggregation of the self-assembled nanosheets contributed to the formation of 3D hierarchical architecture containing mesopores, which is favorable for efficient reactants transport and photo-energy harvesting. Furthermore, the band gap structure of (BiO)(2)CO3 was revealed by the experimental method combined with density functional theoretical calculation. As expected, the novel (BiO)(2)CO3 hierarchical hollow microspheres exhibited enhanced photocatalytic activity due to the special hierarchical morphology, exceeding that of (BiO)(2)CO3 particles and commercial P25. The as-prepared uniform (BiO)(2)CO3 microspheres with well-defined hierarchical hollow structures are also ideal candidates for investigating their architecture-dependent performances in other areas, such as solar energy conversion, catalysis, electronics and so on. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Multidisciplinary ; Crystallography |
| 研究领域[WOS] | Chemistry ; Crystallography |
| 关键词[WOS] | LIGHT-DRIVEN PHOTOCATALYST ; VISIBLE-LIGHT ; HYDROTHERMAL SYNTHESIS ; BISMUTH SUBCARBONATE ; FREE FABRICATION ; INDOOR AIR ; NANOSTRUCTURES ; TRANSFORMATION ; OXIDE ; EFFICIENT |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000303168700030 |
| 公开日期 | 2015-07-14 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/1686]  |
| 专题 | 武汉物理与数学研究所_磁共振应用研究部 |
| 作者单位 | 1.Hong Kong Polytech Univ, Dept Civil & Struct Engn, Res Ctr Environm Technol & Management, Hong Kong, Hong Kong, Peoples R China 2.Chongqing Technol & Business Univ, Coll Environm & Biol Engn, Key Lab Catalysis Sci & Technol, Chongqing Educ Commiss, Chongqing 400067, Peoples R China 3.Chinese Acad Sci, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China 4.Zhejiang Univ, Dept Environm Engn, Hangzhou 310027, Zhejiang, Peoples R China 5.Zhejiang Gongshang Univ, Coll Environm Sci & Engn, Hangzhou 310012, Zhejiang, Peoples R China 6.Hong Kong Univ Sci & Technol, Nano & Adv Mat Inst Ltd, Hong Kong, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, Fan,Zheng, Anmin,Sun, Yanjuan,et al. One-pot template-free synthesis, growth mechanism and enhanced photocatalytic activity of monodisperse (BiO)(2)CO3 hierarchical hollow microspheres self-assembled with single-crystalline nanosheets[J]. CRYSTENGCOMM,2012,14(10):3534-3544. |
| APA | Dong, Fan.,Zheng, Anmin.,Sun, Yanjuan.,Fu, Min.,Jiang, Boqiong.,...&Wu, Zhongbiao.(2012).One-pot template-free synthesis, growth mechanism and enhanced photocatalytic activity of monodisperse (BiO)(2)CO3 hierarchical hollow microspheres self-assembled with single-crystalline nanosheets.CRYSTENGCOMM,14(10),3534-3544. |
| MLA | Dong, Fan,et al."One-pot template-free synthesis, growth mechanism and enhanced photocatalytic activity of monodisperse (BiO)(2)CO3 hierarchical hollow microspheres self-assembled with single-crystalline nanosheets".CRYSTENGCOMM 14.10(2012):3534-3544. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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