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题名: Fabrication of core-shell structured mesoporous silica nanospheres with dually oriented mesochannels through pore engineering
作者: Peng, Juan1, 2;  Liu, Jia1;  Liu, Jian3;  Yang, Yan1;  Li, Can1;  Yang, Qihua1
刊名: JOURNAL OF MATERIALS CHEMISTRY A
发表日期: 2014
DOI: 10.1039/c4ta00899e
卷: 2, 期:21, 页:8118-8125
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Energy & Fuels ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Energy & Fuels ;  Materials Science
英文摘要: This work focuses on engineering the pore orientations and pore sizes of mesoporous silica nanospheres (MSNs) in one pot. Core-shell structured MSNs possessing dual mesochannel orientation in one particle and tunable larger mesopores (3.0-7.3 nm) have been synthesized by using cetyltrimethyl ammonium bromide (CTAB) as a template with the aid of 1,3,5-trimethylbenzene (TMB). The formation of penetrating and radial mesochannels in the respective core and shell has been characterized by scanning electron microscopy, transmission electron microscopy, and N-2 sorption techniques and has been further confirmed by the two-step adsorption and desorption curves for lysozymes. Moreover, the pore sizes, core sizes and shell thicknesses of dual-oriented MSNs can be easily tuned by varying the TMB content and the synthesis temperature. The mechanism investigations suggest that the initially formed silicate species with penetrating channels act as nuclei for the radial arrangement of cylindrical micelles for the formation of dually oriented mesostructures, in which TMB can control the pore orientation and pore diameter by affecting the kinetics of the solid silica formation and the swelling of the CTAB micelles.
关键词[WOS]: MORPHOLOGICAL CONTROL ;  NANOPARTICLES ;  SIZE ;  SPHERES ;  SBA-15 ;  MESOSTRUCTURE ;  PARTICLES ;  MECHANISM ;  DELIVERY ;  GROWTH
语种: 英语
WOS记录号: WOS:000335924100065
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143215
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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, Grad Sch, Beijing 100049, Peoples R China
3.Curtin Univ, Dept Chem Engn, Perth, WA 6845, Australia

Recommended Citation:
Peng, Juan,Liu, Jia,Liu, Jian,et al. Fabrication of core-shell structured mesoporous silica nanospheres with dually oriented mesochannels through pore engineering[J]. JOURNAL OF MATERIALS CHEMISTRY A,2014,2(21):8118-8125.
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