Crystal structure and morphology dependence of the phase of mollusc shell: A case study of XRD, SEM and ESR
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Author list: Siriprom W., Kaewkhao J., Phachana K., Limsuwan P.
Publisher: IOP Publishing
Publication year: 2011
Volume number: 266
Issue number: 1
ISSN: 1742-6588
eISSN: 1742-6596
Languages: English-Great Britain (EN-GB)
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Abstract
The aim of this study is to investigate the physical properties in the Paphia undulate and Amusium pleuronectes shells collected from the coastal area of Chonburi province, Thailand. The crystal structure of the shells was studied by x-ray diffraction (XRD). The XRD patterns spectra reveal that the Paphia undulate shells and Amusium pleuronectes shells are made of a pure aragonite phase, and a mixture phase of aragonite and calcite, respectively, the identification and quantitative analysis were performed by using the Rietveld method. In this study, we also used the scanning electron microscope (SEM) to study the Morphology of the Paphia undulate shells and Amusium pleuronectes shells. The results on SEM micrographs agree well with those of XRD. In addition, the ions in the shell samples were also studied by Electron Spin Resonance Spectroscopy (ESR). The ESR spectra show that the samples of both shells were consisting of Mn2+ ions. The pattern of the ESR spectrum is thus strongly influenced by the environment of the paramagnetic ions, and then it can be used to identification of crystal structure of mollusc shell ฉ Published under licence by IOP Publishing Ltd.
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