Porous two-dimensional materials (MXenes) for gas separations

用于气体分离的多孔二维材料（MXenes）

• 批准号: 2447037
• 金额: --
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2447037
• 关键词: Porous; two; dimensional; materials; MXenes

The PhD project will synthesise porous MXenes and test them for gas separations relevant for carbon capture and hydrogen purification. MXenes are a new class of two-dimensional materials that have been recently discovered and have already shown great promise for applications in electrochemical energy storage and electromagnetic shielding. In our research group, we have been looking at methods for increasing the porosity and surface area in MXenes, as these can prove extremely beneficial for applications that include electrochemical energy storage, catalysis and gas adsorption. We have successfully synthesised porous MXenes with high surface areas and tailored pore sizes, properties that are extremely important for gas separations, but so far these materials have been untested in these applications.Industrial separations are responsible for 15% of the world's primary energy demand, and they are critical for future industries, such as hydrogen fuel cells, which require purification of hydrogen gas, or waste-to-energy processes such as gasification, which need careful separation of the resulting gaseous streams. Adsorption-based separations have long been used in industry, but there is an urgent need for development of new materials that can provide for more energy-efficient separations. The project will look at synthesis and characterisation of new porous MXenes, tuning their pore sizes and surface chemistry. It will then test these for gas adsorption of CO2, N2, O2 and H2, with the view of identifying the most promising combinations for gas separations. The final stage of the project involves testing the materials for binary and multicomponent gas separations.

博士项目将合成多孔MXenes，并测试它们与碳捕获和氢净化相关的气体分离。MXenes是最近发现的一类新的二维材料，在电化学储能和电磁屏蔽方面已经显示出巨大的应用前景。在我们的研究小组中，我们一直在寻找增加MXenes孔隙度和表面积的方法，因为这些方法对电化学储能、催化和气体吸附等应用非常有益。我们已经成功地合成了具有高表面积和定制孔径的多孔MXenes，这些特性对气体分离非常重要，但到目前为止，这些材料尚未在这些应用中进行测试。工业分离占世界一次能源需求的15%，它们对未来的工业至关重要，比如需要净化氢气的氢燃料电池，或者需要仔细分离产生的气体流的气化等废物转化为能源的过程。吸附分离技术在工业上的应用已经很长时间了，但迫切需要开发新的材料，以提供更节能的分离。该项目将着眼于新型多孔MXenes的合成和表征，调整其孔径和表面化学性质。然后，它将测试这些气体对CO2， N2， O2和H2的吸附，以确定最有希望的气体分离组合。该项目的最后阶段包括测试二元和多组分气体分离的材料。