Parallelogram-like microparticles of calcium dihydrogen phosphate monohydrate (Ca(H2PO4)2·H2O) obtained by a rapid precipitation route in aqueous and acetone media

Boonchom, Banjong

doi:10.1016/j.jallcom.2009.03.157

Cited by 41 publications

(65 citation statements)

References 26 publications

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“…The vibrational bands of water molecules are related to three modes of bending, asymmetric stretching (O-H) and antisymmetric stretching (O-H), which appears at 1651 cm -1 (ν2), 3242 cm -1 (ν1) and 3469 (ν3) cm -1 , respectively [19,26]. For FTIR spectrum of the prepared TCP, vibrational bands are assigned to the fundamental vibrating unit, PO4 3anion, which has four characteristic modes of vibration of a tetrahedral ion (Td) consisting symmetric stretching (ν1 (A1); singly degenerate), anti-symmetric stretching (ν3 (F2); triply degenerate), symmetric bending vibrations (ν2 (E); doubly degenerate), and anti-symmetric bending (ν4 (F2); triply degenerate) vibrations.…”

Section: Resultsmentioning

confidence: 99%

“…and phosphorus (phosphoric acid, sodium phosphates, potassium phosphates, ammonium phosphates etc.) by many methods including chemical precipitation [19], sol-gel process [20], microwave method [21,22], pyrolytic synthesis [23], hydrothermal synthesis [24] and mechanochemical method [25][26][27][28][29][30]. However, these reported methods had complex procedures due to the need to control the temperature and/or pH, prolong preparation time and specific quantity of raw agents, which raises the cost.…”

Section: A Simple and Rapid Transformation Of Golden Apple Snail (Pommentioning

confidence: 99%

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A Simple and Rapid Transformation of Golden Apple Snail (Pomacea canaliculata) Shells to Calcium Carbonate, Monocalcium and Tricalcium Phosphates

et al. 2019

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This study was designed to manage golden apple snail shells, the wastes created in large amount daily from the consumption of the meat of golden apple snail (Pomacea canaliculata) shells by transforming them to advanced compounds; calcium carbonate (CaCO3), monocalcium phosphate monohydrate [Ca(H2PO4)2·H2O], and tricalcium phosphate [Ca3(PO4)2]. They were successfully prepared by a rapid, simple, environmentally benign method using easily available and low-cost instrument. All synthesized samples were characterized by X-ray fluorescence, X-ray powder diffraction, FTIR spectroscopy and scanning electron microscopy to confirm the identities with the standard materials. The reproducibility and low-cost method suggest that it could be used in industry for a large-scale production of calcium carbonate, monocalcium phosphate monohydrate and tricalcium phosphate from golden apple snail shells as a replacement of natural mineral resources and be a good way to manage these shell wastes.

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Section: Resultsmentioning

confidence: 99%

Section: A Simple and Rapid Transformation Of Golden Apple Snail (Pommentioning

confidence: 99%

A Simple and Rapid Transformation of Golden Apple Snail (Pomacea canaliculata) Shells to Calcium Carbonate, Monocalcium and Tricalcium Phosphates

et al. 2019

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“…at the Ca/P ratio *0.5 and solution pH below *2.0. Besides, MCPM might be precipitated from aqueous solutions containing organic solvents (Boonchom 2009;Kongteweelert et al 2013). At temperatures above *100°C, MCPM releases a molecule of water and transforms into MCPA but at temperatures [*500°C MCPA further transforms into Ca(PO 3 ) 2 (Tynsuaadu 1990).…”

Section: The Members Of Capo 4 Familymentioning

confidence: 99%

Calcium orthophosphates (CaPO 4 ): Occurrence and properties

Dorozhkin¹

2017

Morphologie

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“…It precipitates from highly acidic solutions that are normally used in the industry of phosphorus-containing fertilizer production (“triple superphosphate”) 37 . Besides, MCPM might be fabricated by a simple precipitation method using CaCO 3 and H 3 PO 4 in aqueous and acetone media at ambient temperature 123 . At temperatures above ~100°C it releases a molecule of water and transforms into MCPA.…”

Section: The Members Of the Calcium Orthophosphate Familymentioning

confidence: 99%

Calcium orthophosphates

2011

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The present overview is intended to point the readers’ attention to the important subject of calcium orthophosphates. This type of materials is of special significance for human beings, because they represent the inorganic part of major normal (bones, teeth and antlers) and pathological (i.e., those appearing due to various diseases) calcified tissues of mammals. For example, atherosclerosis results in blood vessel blockage caused by a solid composite of cholesterol with calcium orthophosphates, while dental caries and osteoporosis mean a partial decalcification of teeth and bones, respectively, that results in replacement of a less soluble and harder biological apatite by more soluble and softer calcium hydrogenphosphates. Therefore, the processes of both normal and pathological calcifications are just an in vivo crystallization of calcium orthophosphates. Similarly, dental caries and osteoporosis might be considered an in vivo dissolution of calcium orthophosphates. Thus, calcium orthophosphates hold a great significance for humankind, and in this paper, an overview on the current knowledge on this subject is provided.

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Parallelogram-like microparticles of calcium dihydrogen phosphate monohydrate (Ca(H2PO4)2·H2O) obtained by a rapid precipitation route in aqueous and acetone media

Cited by 41 publications

References 26 publications

A Simple and Rapid Transformation of Golden Apple Snail (Pomacea canaliculata) Shells to Calcium Carbonate, Monocalcium and Tricalcium Phosphates

A Simple and Rapid Transformation of Golden Apple Snail (Pomacea canaliculata) Shells to Calcium Carbonate, Monocalcium and Tricalcium Phosphates

Calcium orthophosphates (CaPO 4 ): Occurrence and properties

Calcium orthophosphates

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