In situ measurement of growth kinetics of {100} KDP crystal faces in the presence of polyphosphate impurities

Liu, Bing; Fang, Changshui; Wang, Shenglai; Mou, Xiaoming

doi:10.1002/crat.200711093

Cited by 19 publications

(21 citation statements)

References 23 publications

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“…The growth rate of the (100) face was measured by the laser polarization interference system [15]. The schematic of the system was shown in Figure 1.…”

Section: Measurement Of Growth Ratementioning

confidence: 99%

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Study on Micro Morphology of Potassium Dihydrogen Phosphate Crystals Grown at Elevated Temperatures

Wang

Ding

et al. 2017

Crystals

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Potassium dihydrogen phosphate crystals were grown around 65 • C. The growth rate of KDP (KH 2 PO 4 ) crystal prismatic faces was measured by laser polarization interference system. The surface micro morphology of KDP crystals grown at various supersaturation were comparatively observed by atomic force microscope systematically. The results show that the growth rate increased with the rise of supersaturation, the aspect ratio reduced. The steps bunching height occurred at σ = 0.03 and 0.04. At this point, the steps height reached maximum value about 11.3~24.4 nm. The step bunching was almost constant at higher supersaturation. A few pits and holes appeared on the crystal surface at high supersaturation. In our opinion, the forming of these pits and holes might be related with the step movement and 2D nuclei mechanism.

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“…The growth rate of the (100) face was measured by the laser polarization interference system [15]. The schematic of the system was shown in Figure 1.…”

Section: Measurement Of Growth Ratementioning

confidence: 99%

“…At high supersaturation, the shape became "chunky" finally. The growth rate R was calculated in terms of relationship between the laser intensity I and the crystal thickness [15] as…”

Section: Crystals and Aspect Ratiomentioning

confidence: 99%

Study on Micro Morphology of Potassium Dihydrogen Phosphate Crystals Grown at Elevated Temperatures

Wang

Ding

et al. 2017

Crystals

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“…High speed imaging processes has also been used to capture high resolution images on-line and perform real-time, in situ particle analysis [10,13,14,54]. Other methods reported for growth rate determination include atomic force microscopy (AFM) [55][56][57][58][59], Michelson interferometry [60][61][62][63][64] and laser polarization-interference techniques [65].…”

Section: Crystal Growth Rate Measurement Techniquesmentioning

confidence: 99%

Precision measurement of the growth rate and mechanism of ibuprofen {001} and {011} as a function of crystallization environment

et al. 2014

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Article:Nguyen, TTH, Hammond, RB, Roberts, KJ et al. (2 more authors) (2014) Precision measurement of the growth rate and mechanism of ibuprofen {001} and {011} as a function of crystallization environment. CrystEngComm, 16 (21). 4568 -4586. ISSN 1466-8033 https://doi.org/10.1039/c4ce00097h eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. acetonitrile. The crystal growth rates of the {001} and {011} faces of spontaneously nucleated crystals are precisely measured in-situ using optical microscopy revealing that their respective growth rates increase with increasing supersaturation to different extents, depending on the solvent type, with concomitant impact on the crystal habit. The measured aspect ratios, as a function of supersaturation, are generally higher at the 15 mL than the 0.5 mL scale size.Analysis of the growth rates versus supersaturation is consistent with a 2-D surface nucleation (Birth and Spread) model for both faces and at both scale sizes. The growth rates of the {001} and {011} faces exhibit much less growth rate dispersion when compared to literature data for a stirred batch crystallizer. 2The data is rationalized by examining the surface chemistry of the growing faces revealing, e.g. that polar protic solvents inhibit the growth rate of faces containing available binding sites for hydrogen bonding formation, such as carboxylic acid groups.

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“…The growth rate and dead zone of the (100) face of KDP crystal were measured by laser-polarizationinterference technique [4]. The supersaturation of the growth solution was controlled via the circular water.…”

Section: -mentioning

confidence: 99%

“…The effect of impurities in the solution on growth habit of KDP crystal has been extensively studied [1][2][3][4]. It has been confirmed that trivalent and divalent metallic cations are liable to be absorbed on (100) face and inhibit the movement of the growth step, resulting in (100) faces tapering [1].…”

Section: Introductionmentioning

confidence: 99%

Influence of SiO₃^2‐ impurity on growth habit of potassium dihydrogen phosphate crystal

Ding

Wang³

et al. 2010

Cryst. Res. Technol.

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By altering the concentration of silicate (SiO 3 2-) impurity in the solution, a series of potassium dihydrogen phosphate (KDP) crystals was obtained by the conventional temperature cooling and the rapid growth methods, respectively. It was observed that the presence of SiO 3 2-made KDP crystals tapering in conventional cooling method, while more SiO 3 2-induced inclusions at prismatic sectors in the rapid growth method. Laser-polarization-interference results showed that SiO 3 2-extended the dead zone and reduced the growth rate of (100) face of KDP crystals. The negative influence of SiO 3 2-on the growth was considered absolutely similar to the effect of cations. It was also suggested that the stability of solution doped with SiO 3 2-was improved without seed crystals, while it was destructed with seed crystals. The inhibition mechanism was analyzed in terms of SiO 3 2-absorption on (100) face.

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In situ measurement of growth kinetics of {100} KDP crystal faces in the presence of polyphosphate impurities

Cited by 19 publications

References 23 publications

Study on Micro Morphology of Potassium Dihydrogen Phosphate Crystals Grown at Elevated Temperatures

Study on Micro Morphology of Potassium Dihydrogen Phosphate Crystals Grown at Elevated Temperatures

Precision measurement of the growth rate and mechanism of ibuprofen {001} and {011} as a function of crystallization environment

Influence of SiO₃^2‐ impurity on growth habit of potassium dihydrogen phosphate crystal

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In situ measurement of growth kinetics of {100} KDP crystal faces in the presence of polyphosphate impurities

Cited by 19 publications

References 23 publications

Study on Micro Morphology of Potassium Dihydrogen Phosphate Crystals Grown at Elevated Temperatures

Study on Micro Morphology of Potassium Dihydrogen Phosphate Crystals Grown at Elevated Temperatures

Precision measurement of the growth rate and mechanism of ibuprofen {001} and {011} as a function of crystallization environment

Influence of SiO32‐ impurity on growth habit of potassium dihydrogen phosphate crystal

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Influence of SiO₃^2‐ impurity on growth habit of potassium dihydrogen phosphate crystal