Tadyszak, K, Wereszczyńska, B and Gonet, M (2020) CT, MR and EPR imaging of graphene oxide aerogels. Solid State Sciences, 109. 106402. ISSN 1293-2558
Abstract
The shape and intrinsic pore structure of pristine and partially reduced graphene oxide (prGO) aerogels/hydrogels was imaged using three complementary techniques: Magnetic Resonance Imaging (MRI), Computer Tomography (CT) and Electron Paramagnetic Resonance Imaging (EPRI). Each method is sensitive to different features of the sample: CT images are contrasted with mass density changes across sample, MRI with hydrogen density, nuclear relaxation times, diffusion, and finally EPRI with radical density. The complementarity of the techniques is presented on exemplary chosen prGO aerogels, which are currently researched for variety of applications, such as biomaterials in tissue engineering. All techniques have their strengths and weaknesses which are thoroughly pointed out and discussed. EPRI technique, which has been perfected only during last years, is used here for the first time to image carbon-based foams. Finally scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS) is used to characterize surface and elemental content of fabricated prGO aerogels/hydrogels.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Keywords: | Graphene oxide aerogel; Reduced graphene oxide; Lyophilization; EPR imaging; Magnetic resonance imaging; Computer tomography |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Medicine (Leeds) > Leeds Institute of Cardiovascular and Metabolic Medicine (LICAMM) > Biomedical Imaging Science Dept (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 04 Jan 2021 12:14 |
Last Modified: | 04 Jan 2021 12:14 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.solidstatesciences.2020.106402 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:169279 |