DICP OpenIR
From Hollow Nanosphere to Hollow Microsphere: Mild Buffer Provides Easy Access to Tunable Silica Structure
Liu, Jian1,2; Fan, Fengtao1,2; Feng, Zhaochi1; Zhang, Lei1; Bai, Shiyang1,2; Yang, Qihua1; Li, Can1; Yang QH(杨启华); Li C(李灿); Yang QH(杨启华); Li C(李灿)
刊名JOURNAL OF PHYSICAL CHEMISTRY C
2008-10-01
DOI10.1021/jp804161f
112期:42页:16445-16451
收录类别SCI
文章类型Article
部门归属5
项目归属506,503
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science
关键词[WOS]PERIODIC MESOPOROUS ORGANOSILICAS ; IN-SITU ; SONOCHEMICAL TREATMENT ; FACILE SYNTHESIS ; TEOS HYDROLYSIS ; SPHERES ; SHELL ; PARTICLES ; RAMAN ; GEL
英文摘要A facile synthesis method for producing silica hollow spheres from nano- to microsize level is realized by adjusting the hydrolysis and condensation kinetics of silane precursors in a mild buffer solution (NaH2PO4-Na2HPO4, pH approximate to 7.0) in the presence of F127 (EO106PO70EO106) surfactant. Characterization using transmission electron microscopy, field-emission scanning electron microscopy, and nitrogen sorption techniques reveals that the silica hollow nanospheres with outer diameter of about 12 nm can be obtained with tetramethoxysilane as silane precursor. Silica hollow nanospheres (similar to 20 nm) can also be prepared using tetraethoxysilane (TEOS) as silane precursor with the addition of hydrolysis and condensation catalyst NH4F. Using TEOS as the silane precursor without F-, the formation of silica hollow microspheres (0.5 similar to 8 mu m) was observed. Time-resolved in situ UV-Raman results show that TEOS does not hydrolyze at room temperature, and the hydrolysis of TEOS occurs immediately at room temperature when NH4F was added to the buffer solution. The fast hydrolysis and condensation rates of silane precursor favor the formation of hollow nanospheres through the condensation of silicate around a single micelle of F127 in NaH2PO4-Na2HPO4 buffer solution. The construction of hollow microspheres is attributed to the formation of O/W emulsion by the hydrophobic TEOS with the aid of F127 surfactant due to the existence of unhydrolyzed TEOS at room temperature under current synthetic conditions.
语种英语
原文出处查看原文
WOS记录号WOS:000260129400048
引用统计
被引频次:33[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/100715
专题中国科学院大连化学物理研究所
通讯作者Yang QH(杨启华); Li C(李灿); Yang QH(杨启华); Li C(李灿)
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 100039, Peoples R China
推荐引用方式
GB/T 7714
Liu, Jian,Fan, Fengtao,Feng, Zhaochi,et al. From Hollow Nanosphere to Hollow Microsphere: Mild Buffer Provides Easy Access to Tunable Silica Structure[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2008,112(42):16445-16451.
APA Liu, Jian.,Fan, Fengtao.,Feng, Zhaochi.,Zhang, Lei.,Bai, Shiyang.,...&李灿.(2008).From Hollow Nanosphere to Hollow Microsphere: Mild Buffer Provides Easy Access to Tunable Silica Structure.JOURNAL OF PHYSICAL CHEMISTRY C,112(42),16445-16451.
MLA Liu, Jian,et al."From Hollow Nanosphere to Hollow Microsphere: Mild Buffer Provides Easy Access to Tunable Silica Structure".JOURNAL OF PHYSICAL CHEMISTRY C 112.42(2008):16445-16451.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Liu, Jian]的文章
[Fan, Fengtao]的文章
[Feng, Zhaochi]的文章
百度学术
百度学术中相似的文章
[Liu, Jian]的文章
[Fan, Fengtao]的文章
[Feng, Zhaochi]的文章
必应学术
必应学术中相似的文章
[Liu, Jian]的文章
[Fan, Fengtao]的文章
[Feng, Zhaochi]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。