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Dynamics of Salt Precipitation on Graphene Oxide Membranes

机译:石墨烯膜对盐沉淀的动态

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摘要

We investigated the drying dynamics and resulting salt deposition patterns from evaporating saline droplets on fabricated graphene oxide (GO) and reduced graphene oxide (rGO) membranes. As evaporation proceeds, the salt concentration increases until it exceeds substantially the solubility limit which results in the formation of salt crystals. Scanning electron microscopy imaging enabled us to investigate how the properties of the fabricated membranes influence the salt deposition patterns and crystal morphology, providing us with an opportunity to control salt deposition patterns on the surface. The observation from the drying of saline droplets on fabricated GO and rGO membranes leads us to conclude that combined effects of the membrane roughness, interlayer spacing, and nanochannel connectivity determines the drying dynamics and the final salt deposition patterns. Our results extend the understanding of the interaction between surface properties and salt deposition patterns, which is relevant information for various engineering processes such as coating of marine vessels and in water remediation technologies.
机译:我们研究了干燥动力学和从制造的石墨烯氧化物(GO)上的盐水液滴和降低的氧化石墨烯(RGO)膜上的盐水液滴的干燥动力学和所得的盐沉积图案。作为蒸发进行,盐浓度增加,直至其超过基本上是导致盐晶形成的溶解度极限。扫描电子显微镜成像使我们能够研究制造膜的性质如何影响盐沉积图案和晶体形态,为我们提供控制表面上的盐沉积图案的机会。从制造的Go和Rgo膜上干燥的盐水液滴干燥的观察导致我们得出结论,膜粗糙度,层间距和纳米通道连接的组合效应决定了干燥动力学和最终盐沉积图案。我们的结果延长了对表面性质和盐沉积模式之间的相互作用的理解,这是各种工程过程的相关信息,如海洋血管涂覆和水处理技术。

著录项

  • 来源
    《Crystal growth & design》 |2019年第1期|共8页
  • 作者单位

    Univ Manchester Sch Chem Engn &

    Analyt Sci Manchester M13 9PL Lancs England;

    Univ Manchester Sch Chem Engn &

    Analyt Sci Manchester M13 9PL Lancs England;

    Univ Manchester Sch Chem Engn &

    Analyt Sci Manchester M13 9PL Lancs England;

    Univ Manchester Sch Chem Engn &

    Analyt Sci Manchester M13 9PL Lancs England;

    Johnson Matthey Technol Ctr Billingham TS23 1LB Cleveland England;

    Univ Manchester Sch Chem Engn &

    Analyt Sci Manchester M13 9PL Lancs England;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 晶体学;
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