A versatile method for controlled synthesis of porous hollow spheres

Yongqiang Wang; Chunjuan Tang; Quan Deng; Changhao Liang; Dickon H.L. Ng; Fung Luen Kwong; Hongqiang Wang; Weiping Cai; Lide Zhang; Guozhong Wang

doi:10.1021/la101805v

A versatile method for controlled synthesis of porous hollow spheres

Yongqiang Wang, Chunjuan Tang, Quan Deng, Changhao Liang, Dickon H.L. Ng, Fung Luen Kwong, Hongqiang Wang, Weiping Cai, Lide Zhang, Guozhong Wang

Research output: Contribution to journal › Article › peer-review

73 Scopus citations

Abstract

A versatile method was developed to synthesize nickel silicate, silica, and silica-nickel composite porous hollow spheres by using silica spheres as templates. In the preparation, silica spheres were treated with a mixture of NiSO₄·6H₂O and NH₃·H ₂O. The nickel-based ingredient reacted with the silica to form a shell while the alkaline solution could remove the silica core, thus forming the nickel silicate hollow spheres. After these spheres were further treated with hydrogen in reduction or with HCl in etching, they became silica-nickel hollow spheres or silica hollow spheres, respectively. The sizes of these hollow spheres depended on the concentration of the precursor. Our investigation also found that their surface properties or magnetic properties could be tailored by adjusting the fabrication parameters.

Original language	English
Pages (from-to)	14830-14834
Number of pages	5
Journal	Langmuir
Volume	26
Issue number	18
DOIs	https://doi.org/10.1021/la101805v
State	Published - 21 Sep 2010
Externally published	Yes

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title = "A versatile method for controlled synthesis of porous hollow spheres",

abstract = "A versatile method was developed to synthesize nickel silicate, silica, and silica-nickel composite porous hollow spheres by using silica spheres as templates. In the preparation, silica spheres were treated with a mixture of NiSO4·6H2O and NH3·H 2O. The nickel-based ingredient reacted with the silica to form a shell while the alkaline solution could remove the silica core, thus forming the nickel silicate hollow spheres. After these spheres were further treated with hydrogen in reduction or with HCl in etching, they became silica-nickel hollow spheres or silica hollow spheres, respectively. The sizes of these hollow spheres depended on the concentration of the precursor. Our investigation also found that their surface properties or magnetic properties could be tailored by adjusting the fabrication parameters.",

author = "Yongqiang Wang and Chunjuan Tang and Quan Deng and Changhao Liang and Ng, {Dickon H.L.} and Kwong, {Fung Luen} and Hongqiang Wang and Weiping Cai and Lide Zhang and Guozhong Wang",

year = "2010",

month = sep,

day = "21",

doi = "10.1021/la101805v",

language = "英语",

volume = "26",

pages = "14830--14834",

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T1 - A versatile method for controlled synthesis of porous hollow spheres

AU - Wang, Yongqiang

AU - Tang, Chunjuan

AU - Deng, Quan

AU - Liang, Changhao

AU - Ng, Dickon H.L.

AU - Kwong, Fung Luen

AU - Wang, Hongqiang

AU - Cai, Weiping

AU - Zhang, Lide

AU - Wang, Guozhong

PY - 2010/9/21

Y1 - 2010/9/21

N2 - A versatile method was developed to synthesize nickel silicate, silica, and silica-nickel composite porous hollow spheres by using silica spheres as templates. In the preparation, silica spheres were treated with a mixture of NiSO4·6H2O and NH3·H 2O. The nickel-based ingredient reacted with the silica to form a shell while the alkaline solution could remove the silica core, thus forming the nickel silicate hollow spheres. After these spheres were further treated with hydrogen in reduction or with HCl in etching, they became silica-nickel hollow spheres or silica hollow spheres, respectively. The sizes of these hollow spheres depended on the concentration of the precursor. Our investigation also found that their surface properties or magnetic properties could be tailored by adjusting the fabrication parameters.

AB - A versatile method was developed to synthesize nickel silicate, silica, and silica-nickel composite porous hollow spheres by using silica spheres as templates. In the preparation, silica spheres were treated with a mixture of NiSO4·6H2O and NH3·H 2O. The nickel-based ingredient reacted with the silica to form a shell while the alkaline solution could remove the silica core, thus forming the nickel silicate hollow spheres. After these spheres were further treated with hydrogen in reduction or with HCl in etching, they became silica-nickel hollow spheres or silica hollow spheres, respectively. The sizes of these hollow spheres depended on the concentration of the precursor. Our investigation also found that their surface properties or magnetic properties could be tailored by adjusting the fabrication parameters.

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U2 - 10.1021/la101805v

DO - 10.1021/la101805v

M3 - 文章

C2 - 20722442

AN - SCOPUS:77956563280

SN - 0743-7463

VL - 26

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JO - Langmuir

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ER -

A versatile method for controlled synthesis of porous hollow spheres

Abstract

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