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Effects of pH and temperature on CaCO_3 crystallization in aqueous solution with water soluble matrix of pearls

机译：pH和温度对珍珠水溶性基质中CaCO_3结晶的影响

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摘要

Water soluble matrix (WSM) was extracted from pearls originated from Hyriopsis cumingii in Zhuji, Zhejiang province, China. WSM was regarded as an additive in mineralization experiments in order to study the effect of WSM on CaCO_3 crystallization. The experiments were carried out at different pH and temperatures by gas diffusion method and solution titration method, respectively. Scanning electron microscopy (SEM) and Raman spectroscopy (Raman) were used as powerful techniques to analyze the co-effect of pH value, temperature and WSM on crystal growth of CaCO_3. The results showed that WSM could induce aragonite at different pH values of mineralization solution, and the pH value had remarkable influence on morphology of calcite rather than aragonite due to distinct supersaturation and ionic strength related to various pH values. At different solution temperatures, WSM had little effect on crystal growth of calcium carbonate while the solution temperature had notable effect on polymorph and morphology of CaCO_3 crystals. This work can provide some basic information for the polymorph and morphology control of calcium carbonate.
机译：水溶性基质（WSM）是从中国浙江省诸暨市的三角帆蚌的珍珠中提取的。为了研究WSM对CaCO_3结晶的影响，在矿化实验中将WSM视为添加剂。通过气体扩散法和溶液滴定法分别在不同的pH和温度下进行实验。扫描电子显微镜（SEM）和拉曼光谱（Raman）被用作分析pH值，温度和WSM对CaCO_3晶体生长的共同影响的有力技术。结果表明，WSM可以在不同的矿化溶液pH值条件下诱导文石，由于不同pH值具有明显的过饱和度和离子强度，因此pH值对方解石的形态具有明显的影响，而不是文石。在不同的固溶温度下，WSM对碳酸钙晶体的生长影响很小，而固溶温度对CaCO_3晶体的多晶型和形貌影响显着。这项工作可以为碳酸钙的多晶型和形貌控制提供一些基础信息。

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  • 来源
    《Journal of Crystal Growth》 |2010年第21期|p.3165-3170|共6页
  • 作者

    Y.F. Ma; Y.H. Gao; Q.L. Feng;

  • 作者单位

    Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;

    Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;

    Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    A1. Crystal morphology; A2. Growth from solutions; B1. Calcium carbonate;

    机译：A1。晶体形态A2。解决方案的增长;B1。碳酸钙;

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