An acid-free route for the facile synthesis of iron-functionalized mesoporous silicas: Transformation between hollow nanospheres and cage-like mesostructures

	An acid-free route for the facile synthesis of iron-functionalized mesoporous silicas: Transformation between hollow nanospheres and cage-like mesostructures
	Xin, Hongchuan 1,2; Zhao, Jiao 1; Li, Xiaobo 1; Tang, Jianting 1; Yang, Qihua 1
刊名	microporous and mesoporous materials
	2014-05-15
卷号	190 期号:1 页码:54-62
关键词	Acid-free Iron Mesoporous Hollow nanospheres FDU-12
通讯作者	杨启华
英文摘要	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.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, applied ; chemistry, physical ; nanoscience & nanotechnology ; materials science, multidisciplinary
研究领域[WOS]	chemistry ; science & technology - other topics ; materials science
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记录号	WOS:000335102500008
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/144218]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
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.