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Nanometric thin film membranes manufactured on square meter scale: Ultra-thin films for CO_2 capture

机译:平方米制的纳米薄膜:用于CO_2捕集的超薄膜

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摘要

Miniaturization and manipulation of materials at nanometer scale are key challenges in nanoscience and nanotechnology. In membrane science and technology, the fabrication of ultra-thin polymer films (defect-free) on square meter scale with uniform thickness (<100 nm) is crucial. By using a tailor-made polymer and by controlling the nanofabrication conditions, we developed and manufactured defect-free ultra-thin film membranes with unmatched carbon dioxide permeances, i.e. >5 m~3 (STP) m~(-2) h ~(-1) bar~(-1). The permeances are extremely high, because the membranes are made from a CO_2 philic polymer material and they are only a few tens of nanometers thin. Thus, these thin film membranes have potential application in the treatment of large gas streams under low pressure like, e.g., carbon dioxide separation from flue gas.
机译:纳米级材料的小型化和操纵是纳米科学和纳米技术中的关键挑战。在膜科学和技术中,至关重要的是要制造出具有均匀厚度(<100 nm)的,平方米尺寸的超薄聚合物膜(无缺陷)。通过使用量身定制的聚合物并控制纳米制造条件,我们开发并制造了具有无与伦比的二氧化碳渗透率(即> 5 m〜3(STP)m〜(-2)h〜()的无缺陷超薄膜膜。 -1)bar〜(-1)。渗透率极高,因为这些膜是由一种亲CO_2的高分子材料制成的,它们的厚度只有几十纳米。因此,这些薄膜膜在低压下处理大气流中具有潜在的应用,例如从烟道气中分离出二氧化碳。

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