Template-induced synthesis of hierarchical SiO2 at γ-AlOOH spheres and their application in Cr(VI) removal

Yongqiang Wang; Guozhong Wang; Hongqiang Wang; Weiping Cai; Changhao Liang; Lide Zhang

doi:10.1088/0957-4484/20/15/155604

Template-induced synthesis of hierarchical SiO₂ at γ-AlOOH spheres and their application in Cr(VI) removal

Yongqiang Wang, Guozhong Wang, Hongqiang Wang, Weiping Cai, Changhao Liang, Lide Zhang

CAS - Institute of Solid State Physics

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

64 Scopus citations

Abstract

Hierarchical structured SiO₂at γ-AlOOH spheres were fabricated in one step by using silica colloidal spheres as a template. Scanning electron microscopy and transmission electron microscopy investigation showed that the shell is composed of large amounts of nanoscale γ-AlOOH lamellas. The growth mechanism was proposed as silica template-induced heterogeneous deposition of γ-AlOOH lamellas. The adsorption properties of hierarchical SiO₂at γ-AlOOH spheres annealed at different temperatures were investigated through the removal test of Cr(VI) ions in model wastewater, and the nanostructures annealed at 400 °C showed good adsorption capability of Cr(VI) ions.

Original language	English
Article number	155604
Journal	Nanotechnology
Volume	20
Issue number	15
DOIs	https://doi.org/10.1088/0957-4484/20/15/155604
State	Published - 2009
Externally published	Yes

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abstract = "Hierarchical structured SiO2at γ-AlOOH spheres were fabricated in one step by using silica colloidal spheres as a template. Scanning electron microscopy and transmission electron microscopy investigation showed that the shell is composed of large amounts of nanoscale γ-AlOOH lamellas. The growth mechanism was proposed as silica template-induced heterogeneous deposition of γ-AlOOH lamellas. The adsorption properties of hierarchical SiO2at γ-AlOOH spheres annealed at different temperatures were investigated through the removal test of Cr(VI) ions in model wastewater, and the nanostructures annealed at 400 °C showed good adsorption capability of Cr(VI) ions.",

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AU - Wang, Yongqiang

AU - Wang, Guozhong

AU - Wang, Hongqiang

AU - Cai, Weiping

AU - Liang, Changhao

AU - Zhang, Lide

PY - 2009

Y1 - 2009

N2 - Hierarchical structured SiO2at γ-AlOOH spheres were fabricated in one step by using silica colloidal spheres as a template. Scanning electron microscopy and transmission electron microscopy investigation showed that the shell is composed of large amounts of nanoscale γ-AlOOH lamellas. The growth mechanism was proposed as silica template-induced heterogeneous deposition of γ-AlOOH lamellas. The adsorption properties of hierarchical SiO2at γ-AlOOH spheres annealed at different temperatures were investigated through the removal test of Cr(VI) ions in model wastewater, and the nanostructures annealed at 400 °C showed good adsorption capability of Cr(VI) ions.

AB - Hierarchical structured SiO2at γ-AlOOH spheres were fabricated in one step by using silica colloidal spheres as a template. Scanning electron microscopy and transmission electron microscopy investigation showed that the shell is composed of large amounts of nanoscale γ-AlOOH lamellas. The growth mechanism was proposed as silica template-induced heterogeneous deposition of γ-AlOOH lamellas. The adsorption properties of hierarchical SiO2at γ-AlOOH spheres annealed at different temperatures were investigated through the removal test of Cr(VI) ions in model wastewater, and the nanostructures annealed at 400 °C showed good adsorption capability of Cr(VI) ions.

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SN - 0957-4484

VL - 20

JO - Nanotechnology

JF - Nanotechnology

IS - 15

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ER -

Template-induced synthesis of hierarchical SiO₂ at γ-AlOOH spheres and their application in Cr(VI) removal

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