Single-crystal microtubes of a novel apatite-type compound, (Na2.5Bi2.5)(PO4)3(F,OH), with well-faceted hexagonal cross sections

Yan Zhou; Ya-Xi Huang; Yuanming Pan; Jin-Xiao Mi

doi:10.1039/B900499H

Single-crystal microtubes of a novel apatite-type compound, (Na_2.5Bi_2.5)(PO₄)₃(F,OH), with well-faceted hexagonal cross sections

Yan Zhou,^a Ya-Xi Huang,^a Yuanming Pan^b and Jin-Xiao Mi*^a

* Corresponding authors

^a Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, P.R. China
E-mail: jxmi@xmu.edu.cn
Fax: +86-592-2183937
Tel: +86-13696905136

^b Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Canada

Abstract

A novel apatite-type compound, (Na_2.5Bi_2.5)(PO₄)₃(F,OH), NBPF, in the form of single-crystal microtubes with well-faceted, hexagonal morphologies in both exterior and interior surfaces, has been synthesized under hydrothermal conditions without addition of any template, surfactant or metal catalyst. Single crystal X-ray diffraction analysis confirms that Na⁺ and Bi³⁺ ions completely replace the Ca²⁺ ions in the apatite-like structure and jointly occupy three crystallographic sites with significantly different site preferences [Bi_0.61Na_0.39 at the 6c site, and Bi_0.45Na_0.55 and Bi_0.23Na_0.77 at the 2b sites, space groupP6₃ (No. 173)]. Time-dependent experiments show that these NBPF microtubes form via a fluoride-induced, in situ chemical reaction nucleation–dissolution–recrystallization growth mechanism.

Supplementary files

Publication details

The article was received on 09 Jan 2009, accepted on 07 May 2009 and first published on 27 May 2009

Article type: Paper

DOI: 10.1039/B900499H

Citation: CrystEngComm, 2009,11, 1863-1867

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Single-crystal microtubes of a novel apatite-type compound, (Na_2.5Bi_2.5)(PO₄)₃(F,OH), with well-faceted hexagonal cross sections

Y. Zhou, Y. Huang, Y. Pan and J. Mi, CrystEngComm, 2009, 11, 1863
DOI: 10.1039/B900499H
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CrystEngComm

Single-crystal microtubes of a novel apatite-type compound, (Na_2.5Bi_2.5)(PO₄)₃(F,OH), with well-faceted hexagonal cross sections

Abstract

Supplementary files

Publication details

Single-crystal microtubes of a novel apatite-type compound, (Na_2.5Bi_2.5)(PO₄)₃(F,OH), with well-faceted hexagonal cross sections

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