Aqueous mineralization process to synthesize uniform shuttle-like BaMoO{sub 4} microcrystals at room temperature

Journal Article · Thu Nov 15 04:00:00 EST 2007 · Journal of Solid State Chemistry

OSTI ID:21043754

Xueying, Wu; Jin, Du; Haibo, Li; Maofeng, Zhang; Baojuan, Xi; Hai, Fan; Yongchun, Zhu ^[1]

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1. Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Number 96, JinZhai Road, Hefei City, Anhui Province 230026 (China)

Single-crystalline BaMoO{sub 4} microcrystals with uniform shuttle-like morphology have been successfully prepared via a facile aqueous solution mineralization process at room temperature. It was found that the pH value and the reaction temperature had important influences on the formation of the BaMoO{sub 4} microcrystals. The shuttle-like microcrystals can be obtained in alkaline aqueous solution (pH=9-14), and when the pH value was adjusted to 6-7, cocoon-like microcrystals appeared. A possible two-stage growth process has been proposed, and the Ostwald ripening was responsible for the formation of the shuttle-like BaMoO{sub 4} microcrystals. The products were characterized by XRD, XPS, FESEM, HRTEM and Raman spectroscopy. Room-temperature photoluminescence indicated that the as-prepared BaMoO{sub 4} microcrystals had a strong blue emission peak centered at 438 nm. - Graphical abstract: A facile aqueous mineralization process has been used to synthesize uniform shuttle-like BaMoO{sub 4} microcrystals at room temperature. High quality, large scale, and uniform microcrystals with a mean length size of 50 {mu}m can be easily obtained. These microcrystals exhibit single-crystal nature and perfect symmetry.

• OSTI ID: 21043754
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 11 Vol. 180; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
AQUEOUS SOLUTIONS
BARIUM COMPOUNDS
MINERALIZATION
MOLYBDATES
MONOCRYSTALS
MORPHOLOGY
PH VALUE
PHOTOLUMINESCENCE
RAMAN SPECTROSCOPY
SYMMETRY
TEMPERATURE RANGE 0273-0400 K
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY