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学科主题: 物理化学
题名: Silica Microspheres with Fibrous Shells: Synthesis and Application in HPLC
作者: Qu, Qishu1, 2;  Min, Yi3;  Zhang, Lihua3;  Xu, Qin4;  Yin, Yadong2
通讯作者: QishuQu ;  QinXu
刊名: ANALYTICAL CHEMISTRY
发表日期: 2015-10-06
DOI: 10.1021/acs.analchem.5b02511
卷: 87, 期:19, 页:9631-9638
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: Monodispersed silica spheres with solid core and fibrous shell were successfully synthesized using a biphase reaction. Both the thickness and the pore size of the fibrous shell could be finely tuned by changing the stirring rate during synthesis. When stirring was adjusted from 0 to 800 rpm, the thickness of the shell could be tuned from 13 to 67 nm and the pore size from 5 to 16 nm. By continuously adjusting the stirring rate, fibrous shells with hierarchical pore structure ranged from 10 to 28 nm and thickness up to 200 nm could be obtained in one pot. We demonstrate that fibrous shells with controllable thickness and pore size could be coated on silica cores with diameters from 0.5 to 3 mu m while maintaining the monodispersity of the particles. As a result of the unique fibrous structure, the BET surface area could reach similar to 233 m(2) g(-1) even though the shell thickness was less than 150 nm. The core-shell particles were modified with C18, packed, and then used in high-performance liquid chromatography (HPLC) separation, showing separation performance as high as 2.25 x 10(5) plates m(-1) for naphthalene and back pressure as low as 5.8 MPa. These silica microspheres with fibrous shells are expected to have great potential for practical applications in HPLC.
关键词[WOS]: PERFORMANCE LIQUID-CHROMATOGRAPHY ;  SUPERFICIALLY POROUS PARTICLES ;  NARROW-BORE COLUMNS ;  CORE-SHELL ;  SOLID CORE ;  SURFACE ;  SEPARATIONS ;  NANOSPHERES ;  TECHNOLOGY ;  THICKNESS
语种: 英语
WOS记录号: WOS:000362628600022
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143700
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.Anhui Jianzhu Univ, Sch Mat & Chem Engn, Key Lab Funct Mol Design & Interface Proc, Hefei 230601, Peoples R China
2.Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA
3.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatog R&A Ctr, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
4.Yangzhou Univ, Coll Chem & Chem Engn, Yangzhou 225002, Peoples R China

Recommended Citation:
Qu, Qishu,Min, Yi,Zhang, Lihua,et al. Silica Microspheres with Fibrous Shells: Synthesis and Application in HPLC[J]. ANALYTICAL CHEMISTRY,2015,87(19):9631-9638.
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