| dc.identifier.uri | http://hdl.handle.net/11401/78152 | |
| dc.description.sponsorship | This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree | en_US |
| dc.format | Monograph | |
| dc.format.medium | Electronic Resource | en_US |
| dc.language.iso | en_US | |
| dc.type | Dissertation | |
| dcterms.abstract | Nano minerals and materials have become a focal point of Geoscience research due to the unique physical, chemical, optical, magnetic, electronic, and reactive properties. Many of these desired properties in Nano technology have the potential to impact society by improving remediation, photovoltaics, medicine and the sustainability limits on Earth for an expanding population. Despite the progress made on the discovery, synthesis, and manufacturing of numerous nano-materials, the atomistic cause of their desired properties is poorly understood. To gain a better understanding of the atomic structure of nano materials and their bulk counterparts we combined several crystallographic techniques to solve the crystal structure and performed formative characterization to ascertain the atomistic source of the desired application. These strategies and tools can be used to expedite discovery, development and the goals of the National Nanotechnology Initiative (NNI). This thesis will cover the optimization of the reaction conditions and resolve the atomic structure to produce pure synthetic nano nolanite (SNN) Fe2V3O7OH. The complete structural model of nolanite was described from a bulk mineral to the nano-regime using a combination of single crystal X-ray diffraction (SC-XRD), pair distribution function analysis (PDF) and neutron powder diffraction from synthetic material. Nolanite is isostructural to ferrihydrite, a ubiquitous nano-mineral, both of these mineral structures have been the subject for debate for the last half of century. A comparative study of the isostructural minerals nolanite, akdalaite and ferrihydrite was utilized to address the discrepancies and consolidate the structural models. Lastly, we developed a structural model for nano-crystalline titanium-based material; mono sodium titanate (MST) using high energy total X-ray scattering and PDF coupled with scanning transmission electron microscope (STEM). In the USA we have accumulated over 76000 metric tons of nuclear waste and the nuclear industry continues to generate an additional 2000 tons every year. MST is the baseline material used for to effectively remove 90Sr and alpha-emitting actinides from strongly alkaline, high-level nuclear waste solutions at the Savannah River site. Despite the success of MST in the remediation of high-level radioactive waste (HLW) the process by which the metals are structurally incorporated is still poorly understood, and there is still no structural model. This study aims to better understand the ion exchange mechanism of MST by generating a structural model derived from synchrotron X-ray powder diffraction data. | |
| dcterms.available | 2018-03-22T22:39:09Z | |
| dcterms.contributor | Parise, John B | en_US |
| dcterms.contributor | Li, Baosheng | en_US |
| dcterms.contributor | Ghose, Sanjit | en_US |
| dcterms.contributor | Ehm, Lars. | en_US |
| dcterms.contributor | Rasbury, Troy. | en_US |
| dcterms.creator | John, Jesse Adam | |
| dcterms.dateAccepted | 2018-03-22T22:39:09Z | |
| dcterms.dateSubmitted | 2018-03-22T22:39:09Z | |
| dcterms.description | Department of Geosciences. | en_US |
| dcterms.extent | 156 pg. | en_US |
| dcterms.format | Application/PDF | en_US |
| dcterms.format | Monograph | |
| dcterms.identifier | http://hdl.handle.net/11401/78152 | |
| dcterms.issued | 2017-08-01 | |
| dcterms.language | en_US | |
| dcterms.provenance | Made available in DSpace on 2018-03-22T22:39:09Z (GMT). No. of bitstreams: 1
John_grad.sunysb_0771E_13431.pdf: 30793742 bytes, checksum: 9976f40929179b1382372b6dd16db0c3 (MD5)
Previous issue date: 2017-08-01 | en |
| dcterms.subject | Geology -- Nanoscience. | |
| dcterms.subject | isostructural | |
| dcterms.subject | Nano | |
| dcterms.subject | neutron powder diffraction | |
| dcterms.subject | pair distribution function | |
| dcterms.subject | synchrotron | |
| dcterms.subject | X-ray diffraction | |
| dcterms.title | Structural Chemistry of Functional Nano-Materials for Environmental Remediation | |
| dcterms.type | Dissertation | |
