About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Characterization of Minerals, Metals and Materials 2022
|
Presentation Title |
Understanding 3D Volumetric Analysis of Active MOF Embedded in Thin Film Polymer |
Author(s) |
Andy Holwell, Maadhav Kothari, Markus Boese, Simon Vo, Russell Morris, Alexander Forse, Suzi Pugh |
On-Site Speaker (Planned) |
Maadhav Kothari |
Abstract Scope |
Metal organic frameworks (MOFs) are a structurally tuneable class of hierarchical porous materials with a wide range of host-guest chemistry. MOFs are incredibly difficult to structurally characterise using typical scanning electron microscopy methods. Beam stability, along with non-conductive nature and porous framework result in multiple problems for nanoimaging and structural milling. We demonstrate novel imaging and 3D volumetric chemical analysis techniques using MOF-74 type analogue for carbon capture and mixed membrane composite CPO-27-Ni. Using imaging strategies that include high resolution variable pressure microscopy with optimised beam path lengths and charge reduction, we demonstrate superior imaging at low vacuum, improving imaging quality and eliminating sample charging. We also employ a cryogenically cooled in situ stage to undertake 3D volumetric analysis of a MOF composite membrane in conjunction with EDS. Thus, we show a new methodology for volumetric analysis of MOF composites and optimal imaging using low pressure, low kV electron microscopy. |
Proceedings Inclusion? |
Planned: |
Keywords |
Polymers, Characterization, Other |