An acid-free route for the facile synthesis of iron-functionalized mesoporous silicas: Transformation between hollow nanospheres and cage-like mesostructures | |
Xin, Hongchuan1,2; Zhao, Jiao1; Li, Xiaobo1; Tang, Jianting1; Yang, Qihua1 | |
2014-05-15 | |
发表期刊 | MICROPOROUS AND MESOPOROUS MATERIALS |
卷号 | 190期号:1页码:54-62 |
摘要 | Iron-substituted silicas with hollow nanospherical morphology and cage-like mesostructure have been synthesized using triblock copolymer F127 as surfactant and tetramethoxysilane (TMOS) as silica source with no necessary addition of mineral acids. Iron-functionalized hollow nanospheres were obtained using Fe(acac)(3) as iron source. When Fe(NO3)(3) was employed as iron source, iron-containing cage-like FDU-12 mesostructure and hollow nanospheres were formed with Fe/Si molar ratio lower than 0.008 and higher than 0.015, respectively. The formation of hollow spheres at high Fe/Si ratio can be regarded as gradually dissociation of nanocages from Fe-FDU-12. The structure of the iron centers was determined by spectroscopic methods (UV-vis and UV-Raman measurements) and by elemental analyses. The facile structural evolution between cage-like and nanospherical structures may be helpful for further understanding the formation mechanism of mesoporous silicas. (C) 2014 Elsevier Inc. All rights reserved. |
文章类型 | Article |
关键词 | Acid-free Iron Mesoporous Hollow Nanospheres Fdu-12 |
WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
DOI | 10.1016/j.micromeso.2014.01.019 |
关键词[WOS] | RESONANCE RAMAN-SPECTROSCOPY ; BUFFER SOLUTION ; HETEROGENEOUS CATALYSTS ; ASYMMETRIC CATALYSIS ; SELECTIVE OXIDATION ; TEMPLATING APPROACH ; NEUTRAL CONDITIONS ; DRUG-DELIVERY ; NITROUS-OXIDE ; ACTIVE-SITES |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
WOS类目 | Chemistry, Applied ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
WOS记录号 | WOS:000335102500008 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.qibebt.ac.cn/handle/337004/6183 |
专题 | 科技处 |
作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biofuels, Qingdao 266101, Peoples R China |
推荐引用方式 GB/T 7714 | Xin, Hongchuan,Zhao, Jiao,Li, Xiaobo,et al. An acid-free route for the facile synthesis of iron-functionalized mesoporous silicas: Transformation between hollow nanospheres and cage-like mesostructures[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2014,190(1):54-62. |
APA | Xin, Hongchuan,Zhao, Jiao,Li, Xiaobo,Tang, Jianting,&Yang, Qihua.(2014).An acid-free route for the facile synthesis of iron-functionalized mesoporous silicas: Transformation between hollow nanospheres and cage-like mesostructures.MICROPOROUS AND MESOPOROUS MATERIALS,190(1),54-62. |
MLA | Xin, Hongchuan,et al."An acid-free route for the facile synthesis of iron-functionalized mesoporous silicas: Transformation between hollow nanospheres and cage-like mesostructures".MICROPOROUS AND MESOPOROUS MATERIALS 190.1(2014):54-62. |
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