Synthesis and characterization of Al2O3 hollow spheres

被引：24

作者：

Liu, Runjing ^{[1
]}

Li, Yanjv ^{[1
]}

Zhao, Hua ^{[1
]}

Zhao, Fengyun ^{[1
]}

Hu, Yongqi ^{[1
]}

机构：

[1] Hebei Univ Sci & Technol, Coll Chem & Pharmaceut Engn, Shijiazhuang 050018, Peoples R China

来源：

MATERIALS LETTERS | 2008年 / 62卷 / 17-18期

关键词：

Al2O3 hollow spheres; synthesis; characterization; sol-gel preparation; microstructure;

D O I：

10.1016/j.matlet.2007.12.069

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents a novel technique to create Al2O3 hollow spherical nanoparticles. It used Al(OH)(3) which was synthesized with Al-2(SO4)(3) and NaOH, and the C-Al(OH)(3) core-shell nanoparticle as intermediate phases. The Al2O3 hollow spheres were achieved by the calcination of the carbon cores and the dehydration of Al(OH)(3). The chemical composition, morphology, size and superficial crystal structure of the nanoparticles were characterized with TEM, XRD, TGA, FTIR and BET. The result shows that the average diameter of the C-Al(OH)(3) core-shell nanoparticles is about 25 nm, the thickness of the Al2O3 shell is about 5 nm and the surface area is 215.2 m(2)/g. The procedure for the formation of Al2O3 hollow nanoparticles is discussed in details. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：2593 / 2595

页数：3

共 12 条

[1] An alternative method of preparation of dosimetric grade α-Al2O3: C by vacuum-assisted post-growth thermal impurification technique [J].

Kulkarni, MS ;

Mishra, DR ;

Muthe, KP ;

Singh, A ;

Roy, M ;

Gupta, SK ;

Kannan, S .

RADIATION MEASUREMENTS, 2005, 39 (03) :277-282

[2] THERMOSTIMULATED LUMINESCENCE AND FLUORESCENCE OF ALPHA-AL2O3-CR-3+ SAMPLES (RUBY) - INFLUENCE OF THE CR-3+ CONCENTRATION [J].

LAPRAZ, D ;

IACCONI, P ;

DAVILLER, D ;

GUILHOT, B .

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 1991, 126 (02) :521-531

[3]

LI JY, 2003, J XIAMEN U NAT SCI, V42, P626

[4]

LUO YC, 2001, INORG CHEM IND, V33, P3

[5] GAMMA DOSIMETRY WITH AL2O3 THERMOLUMINESCENT PHOSPHOR [J].

MEHTA, SK ;

SENGUPTA, S .

PHYSICS IN MEDICINE AND BIOLOGY, 1976, 21 (06) :955-964

[6] ALUMINUM-OXIDE IN TL DOSIMETRY [J].

OSVAY, M ;

BIRO, T .

NUCLEAR INSTRUMENTS & METHODS, 1980, 175 (01) :60-61

[7] A novel chemical route for the synthesis of nanocrystalline α-Al2O3 powder [J].

Pati, RK ;

Ray, JC ;

Pramanik, P .

MATERIALS LETTERS, 2000, 44 (05) :299-303

[8] Characterisation of 17O-enriched alumina from a new hydrothermal preparation [J].

Schmidt, BC ;

Gaillard, F ;

Smith, ME .

SOLID STATE NUCLEAR MAGNETIC RESONANCE, 2004, 26 (3-4) :197-202

[9] Microwave-assisted synthesis of fibre-like Mg(OH)2 nanoparticles in aqueous solution at room temperature [J].

Wu, HQ ;

Shao, MW ;

Gu, JS ;

Wei, XW .

MATERIALS LETTERS, 2004, 58 (16) :2166-2169

[10] Preparation of ZnS/PS microspheres and ZnS hollow shells [J].

Yin, JL ;

Qian, XF ;

Yin, J ;

Shi, MW ;

Zhou, GT .

MATERIALS LETTERS, 2003, 57 (24-25) :3859-3863

← 1 2 →