Fundamental Investigations into the Metal-Organic Framework Redox-Hopping Charge Transport——Mechanisms and Improvement Strategies
| dc.contributor.author | Yan, Minliang | en |
| dc.contributor.committeechair | Morris, Amanda | en |
| dc.contributor.committeemember | Lin, Feng | en |
| dc.contributor.committeemember | Qiao, Rui | en |
| dc.contributor.committeemember | Moore, Robert Bowen | en |
| dc.contributor.committeemember | Madsen, Louis A. | en |
| dc.contributor.department | Graduate School | en |
| dc.date.accessioned | 2024-10-17T08:00:10Z | en |
| dc.date.available | 2024-10-17T08:00:10Z | en |
| dc.date.issued | 2024-10-16 | en |
| dc.description.abstract | Redox hopping is the dominant charge transport mechanism in many catalyst-modified metal-organic frameworks (MOFs). Previous studies have shown that ion diffusion is the rate-determining step of redox hopping, but the realization regarding to the fundamental mechanism of redox hopping in MOF is still infantile. In this dissertation, we will discuss the redox hopping process in MOFs from multiple perspectives, including how to use the Scholz model to analyze the coefficients in redox hopping, the influence of the type of carrier, the influence of electrolyte concentration, and the influence of temperature on redox hopping, so as to try to reveal the mechanism of the redox hopping process and make some constructive suggestions for the future design and application of MOF based on this topic. | en |
| dc.description.abstractgeneral | Redox hopping is a keyway that electron moves in many special materials called metal-organic frameworks (MOFs) used as catalysts. While we know that the movement of ion is always the bottleneck in MOF because of their huge volume when compared to tiny electrons, there's still a lot to learn about the basic details of how redox hopping works in MOFs. This thesis explores redox hopping in MOFs from various angles. It looks at how we can use a specific model (the Scholz model) to understand this process better and examines the effects of different factors like the type of carrier (electron or hole), the concentration and type of the electrolyte, and the temperature. The goal is to uncover the fundamental workings of redox hopping and gives helpful ideas or principles to guide the design and applications of MOFs in the future. | en |
| dc.description.degree | Doctor of Philosophy | en |
| dc.format.medium | ETD | en |
| dc.identifier.other | vt_gsexam:41471 | en |
| dc.identifier.uri | https://hdl.handle.net/10919/121349 | en |
| dc.language.iso | en | en |
| dc.publisher | Virginia Tech | en |
| dc.rights | Creative Commons Attribution 4.0 International | en |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en |
| dc.subject | Metal-Organic Framework | en |
| dc.subject | Charge Transfer | en |
| dc.subject | Redox Hopping | en |
| dc.subject | Ion Diffusion | en |
| dc.subject | Activation Energy | en |
| dc.subject | Diffusion Coefficient | en |
| dc.title | Fundamental Investigations into the Metal-Organic Framework Redox-Hopping Charge Transport——Mechanisms and Improvement Strategies | en |
| dc.type | Dissertation | en |
| thesis.degree.discipline | Macromolecular Science and Engineering | en |
| thesis.degree.grantor | Virginia Polytechnic Institute and State University | en |
| thesis.degree.level | doctoral | en |
| thesis.degree.name | Doctor of Philosophy | en |