Revealing Optical Properties of Amorphous Two-Dimensional Colloidal Nanosheets for Altering Nanochannels,ACS Sustainable Chemistry & Engineering

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Revealing Optical Properties of Amorphous Two-Dimensional Colloidal Nanosheets for Altering Nanochannels
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-11-11 , DOI: 10.1021/acssuschemeng.0c05248
Rahul Singh ₁ , Seung-Young Choi ₂ , Sungmin Cho ₂ , Majid Shahbabaei ₁

Affiliation

The metastable state of any solution is a key component for achieving well-distributed nanochannels in membrane technology. This state affects the robustness and performance of the membrane in the long run in electrochemical systems. Here, we describe a method for producing a stable colloidal solution of amorphous metal-free nanosheets for the preparation of hybrid membranes. We demonstrate that the colloidal suspension hardly affects the width of the nanochannel in the membrane under the hydrated condition. We further show that the scattering of light in a colloidal suspension provides insights into the interaction between the nanosheet and the ionomer. Under the hydrated condition, a significant increase in the diffusion coefficient with efficient radial distribution between two different particles is noticed. A stable suspension of amorphous 2D nanosheets in the ionomer solution not only avoids the deteriorating mechanical stability of the membrane but also acts as an active material for reducing fuel crossover in the electrochemical cell.

中文翻译：

揭示非晶态二维胶体纳米片改变纳米通道的光学性质

任何溶液的亚稳态都是在膜技术中实现分布均匀的纳米通道的关键组成部分。从长期来看，这种状态会影响膜的坚固性和性能。在这里，我们描述了一种用于制备杂化膜的无定形无金属纳米片的稳定胶体溶液的生产方法。我们证明胶体悬浮液在水合条件下几乎不影响膜中纳米通道的宽度。我们进一步表明，胶体悬浮液中的光散射为纳米片与离聚物之间的相互作用提供了见识。在水合条件下，注意到在两个不同颗粒之间具有有效的径向分布的扩散系数显着增加。

更新日期：2020-11-23

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