Morphology controls of GeO2 particles precipitated by a facile acid-induced decomposition of germanate ions in aqueous medium

Chengbin Jing; Jinxia Hou; Yongheng Zhang

doi:10.1016/j.jcrysgro.2007.10.021

Morphology controls of GeO₂ particles precipitated by a facile acid-induced decomposition of germanate ions in aqueous medium

Chengbin Jing, Jinxia Hou, Yongheng Zhang

Qingdao University of Science and Technology

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

41 Scopus citations

Abstract

GeO₂ single crystals with various morphologies were synthesized at room temperature by an acid-induced homogenous liquid phase precipitation technique without using any surfactants as studied previously. With addition of aqueous ammonia, the solubility of hexagonal GeO₂ in water was significantly increased by formation of soluble germanate ions as confirmed by IR spectra analyses. Supersaturated GeO₂ solution could be produced by adding acid into the GeO₂-ammonia solution through the acid-induced transformation of germinate ions into GeO₂. GeO₂ spheres were obtained with phosphoric acid addition. Truncated cubic-like and cubic-like GeO₂ single crystals could be produced in the solutions with hydrochloric acid and ascorbic acid (vitamin C) additions, respectively. The morphology developments of the GeO₂ particles induced by various acids were discussed and the growth mechanism conforms to BFDH and HP crystal growth models.

Original language	English
Pages (from-to)	391-396
Number of pages	6
Journal	Journal of Crystal Growth
Volume	310
Issue number	2
DOIs	https://doi.org/10.1016/j.jcrysgro.2007.10.021
State	Published - 15 Jan 2008
Externally published	Yes

Keywords

A1. Crystal morphology
A2. Growth from solution
B1. Oxide

Access to Document

10.1016/j.jcrysgro.2007.10.021

Cite this

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title = "Morphology controls of GeO2 particles precipitated by a facile acid-induced decomposition of germanate ions in aqueous medium",

abstract = "GeO2 single crystals with various morphologies were synthesized at room temperature by an acid-induced homogenous liquid phase precipitation technique without using any surfactants as studied previously. With addition of aqueous ammonia, the solubility of hexagonal GeO2 in water was significantly increased by formation of soluble germanate ions as confirmed by IR spectra analyses. Supersaturated GeO2 solution could be produced by adding acid into the GeO2-ammonia solution through the acid-induced transformation of germinate ions into GeO2. GeO2 spheres were obtained with phosphoric acid addition. Truncated cubic-like and cubic-like GeO2 single crystals could be produced in the solutions with hydrochloric acid and ascorbic acid (vitamin C) additions, respectively. The morphology developments of the GeO2 particles induced by various acids were discussed and the growth mechanism conforms to BFDH and HP crystal growth models.",

keywords = "A1. Crystal morphology, A2. Growth from solution, B1. Oxide",

author = "Chengbin Jing and Jinxia Hou and Yongheng Zhang",

year = "2008",

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doi = "10.1016/j.jcrysgro.2007.10.021",

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journal = "Journal of Crystal Growth",

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TY - JOUR

T1 - Morphology controls of GeO2 particles precipitated by a facile acid-induced decomposition of germanate ions in aqueous medium

AU - Jing, Chengbin

AU - Hou, Jinxia

AU - Zhang, Yongheng

PY - 2008/1/15

Y1 - 2008/1/15

N2 - GeO2 single crystals with various morphologies were synthesized at room temperature by an acid-induced homogenous liquid phase precipitation technique without using any surfactants as studied previously. With addition of aqueous ammonia, the solubility of hexagonal GeO2 in water was significantly increased by formation of soluble germanate ions as confirmed by IR spectra analyses. Supersaturated GeO2 solution could be produced by adding acid into the GeO2-ammonia solution through the acid-induced transformation of germinate ions into GeO2. GeO2 spheres were obtained with phosphoric acid addition. Truncated cubic-like and cubic-like GeO2 single crystals could be produced in the solutions with hydrochloric acid and ascorbic acid (vitamin C) additions, respectively. The morphology developments of the GeO2 particles induced by various acids were discussed and the growth mechanism conforms to BFDH and HP crystal growth models.

AB - GeO2 single crystals with various morphologies were synthesized at room temperature by an acid-induced homogenous liquid phase precipitation technique without using any surfactants as studied previously. With addition of aqueous ammonia, the solubility of hexagonal GeO2 in water was significantly increased by formation of soluble germanate ions as confirmed by IR spectra analyses. Supersaturated GeO2 solution could be produced by adding acid into the GeO2-ammonia solution through the acid-induced transformation of germinate ions into GeO2. GeO2 spheres were obtained with phosphoric acid addition. Truncated cubic-like and cubic-like GeO2 single crystals could be produced in the solutions with hydrochloric acid and ascorbic acid (vitamin C) additions, respectively. The morphology developments of the GeO2 particles induced by various acids were discussed and the growth mechanism conforms to BFDH and HP crystal growth models.

KW - A1. Crystal morphology

KW - A2. Growth from solution

KW - B1. Oxide

UR - https://www.scopus.com/pages/publications/37349096631

U2 - 10.1016/j.jcrysgro.2007.10.021

DO - 10.1016/j.jcrysgro.2007.10.021

M3 - 文章

AN - SCOPUS:37349096631

SN - 0022-0248

VL - 310

SP - 391

EP - 396

JO - Journal of Crystal Growth

JF - Journal of Crystal Growth

IS - 2

ER -

Morphology controls of GeO₂ particles precipitated by a facile acid-induced decomposition of germanate ions in aqueous medium

Abstract

Keywords

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