The effect of phosphoric acid concentration on the synthesis of nano-whiskers of calcium metaphosphate by chemical precipitation Method

Calcium metaphosphate (CMP) nano-whiskers were produced by a chemical precipitation method. In order to produce nano-powders, CMP was prepared by the mixing of two precursors, calcium oxide (CaO) and phosphate acid (H sub(3)PO sub(4)). Sparingly soluble chemicals, the Ca/P ratio of the mixture was s...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2011-01, Vol.18 (6), p.062022-4
Main Authors: Yao, Nengjian, Zhang, Yin, Kong, Deshuang, Zhu, Jianping, Tao, Yaqiu, Qiu, Tai
Format: Article
Language:English
Subjects:
Calcium
Calcium oxide
Chemical precipitation
Drying ovens
Heat treatment
Lime
Meters
Nanostructure
Phosphates
Phosphoric acid
Precipitation
Precursors
Specific surface
Synthesis (chemistry)
Zeta potential
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Summary:Calcium metaphosphate (CMP) nano-whiskers were produced by a chemical precipitation method. In order to produce nano-powders, CMP was prepared by the mixing of two precursors, calcium oxide (CaO) and phosphate acid (H sub(3)PO sub(4)). Sparingly soluble chemicals, the Ca/P ratio of the mixture was set to be 0.50 to produce stoichiometric CMP, were chemical agitated in phosphate acid solution. At least 3 hours of pre-hydrolysis of phosphorus precursor were required to obtain CMP phase. The CMP powders were dried in a drying oven at 60 [degrees]C for 7 days and then followed by a heat treatment at 390 [degrees]C for 8hours. The obtained powder was analyzed using XRD, XRF, FT-IR, SEM, TG-DTA, Zeta Potential Meter, Specific Surface Area, and Particle Size Analyzer. The results showed that obtained CMP nano-whiskers have a significantly powder characteristics.
ISSN:1757-899X
1757-8981
1757-899X
DOI:10.1088/1757-899X/18/6/062022