Issue 33, 2012
From the journal:

RSC Advances

One-step synthesis of SbPO4 hollow spheres by a self-sacrificed template method†

Yunjian Wang,a   Liping lib  and  Guangshe Li*a  

* Corresponding authors

a State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter and Graduate School of Chinese Academy of Sciences, Fuzhou
E-mail: guangshe@fjirsm.ac.cn

b Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter and Graduate School of Chinese Academy of Sciences, Chinese Academy of Sciences, Fuzhou 350002

Abstract

High purity SbPO4 hollow spheres assembled by nanoparticles were successfully fabricated by a template-free solvothermal reaction in a mixed solvent of water, ethanol, and oleic acid. The synthetic conditions for the hollow sphere SbPO4 were monitored by a series of time-resolved experiments and further optimized by adjusting the solvent ratio and pH value in the reaction system. Based on XRD and SEM characterization, it is interesting to reveal a phase conversion process from Sb4O5Cl2 to SbPO4 as well as morphology evolution. The phase and morphology transition mechanism was discussed from the chemical equilibrium perspective. Size distributions of Sb4O5Cl2 and SbPO4 samples were in a narrow range of 7 to 13 μm. The Sb4O5Cl2 spheres were constructed in situ by nanosheets, which act as self-sacrificed templates for the SbPO4 hollow spheres. Room-temperature alternative current impedance measurements indicate that the permittivity for the SbPO4 hollow spheres is as high as 130 at 40 Hz, which obviously originates from the interfacial effects with numerous carriers blocked. The synthetic methodology reported in this work can be applied to a broad class of assembled nanostructures for optimization of dielectric performance.

Graphical abstract: One-step synthesis of SbPO4 hollow spheres by a self-sacrificed template method

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Article information

DOI
https://doi.org/10.1039/C2RA21434B
Article type
Paper
Submitted
13 Jul 2012
Accepted
18 Oct 2012
First published
22 Oct 2012

RSC Adv., 2012,2, 12999-13006

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One-step synthesis of SbPO4 hollow spheres by a self-sacrificed template method

Y. Wang, L. li and G. Li, RSC Adv., 2012, 2, 12999 DOI: 10.1039/C2RA21434B

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