稳定无形碳酸在有机丰富环境中的稳定
Matthias Kellermeier1, Emilio Melero-García, Fabian Glaab
1Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstrasse 31, D-93040 Regensburg, Germany.
Journal of the American Chemical Society
|December 2, 2010
概括
研究人员展示了的添加如何稳定无形碳酸 (ACC) 在非生物系统中. 这种二氧化涂层控制了ACC ACC.
科学领域:
- 生物矿物化和材料科学.
- 碳酸结晶的过程.
- 无形碳酸 (ACC) 的稳定.
背景情况:
- 生物通过控制碳酸结晶利用生物矿化来创造材料.
- 无形碳酸 (ACC) 是一种短暂的阶段,通常由有机矩阵稳定.
- 了解ACC稳定是生物仿真材料设计的关键.
研究的目的:
- 调查控制无形碳酸 (ACC) 稳定性的非生物方法.
- 探索二氧化对ACC沉和转化的影响.
- 为了确定ACC稳定性是否可以在纯无机系统中调整.
主要方法:
- 监测高pH值的碳酸沉和不同度的酸盐.
- 描述不断增长的ACC粒子和之间的相互作用.
- 分析无形二氧化层对ACC溶解和酸盐转化的影响.
主要成果:
- 增长的ACC颗粒诱导自发的二氧化聚合.
- 沉积的无形二氧化层封装了ACC颗粒,改变了它们的尺寸并阻止了它们的生长.
- 涂层厚度和多孔度可以根据度调整,控制ACC稳定性.
- 碳酸结晶的速度明显减慢或长时间阻止.
结论:
- 添加非生物性二氧化提供了一种方法来故意控制ACC的时间稳定性.
- 封装提供了一个阻止ACC转化为酸盐的机制.
- 这一发现为设计没有有机模板的稳定无形碳酸基材料开辟了可能性.
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