Defense Date
2024
Document Type
Dissertation
Degree Name
Doctor of Philosophy
Department
Mechanical and Nuclear Engineering
First Advisor
Wei-Ning Wang
Abstract
My dissertation addresses the urgent need for environmental solutions by developing innovative materials and methods to reduce carbon dioxide (CO2) emissions. It encompasses two main research initiatives: the creation of metal-organic frameworks (MOFs) using a microdroplet-based spray process, and the enhancement of electrochemical reduction (ECR) of CO2.
A significant innovation in my work is a novel technique for MOF production, which utilizes atomized microdroplets of MOF precursor solutions. This method significantly reduces processing time and enhances scalability. Specifically, it produces copper 1,4-benzenedicarboxylate (Cu-BDC) MOFs, optimizing operating pressures and flow regimes to discover unique morphologies that could potentially improve CO2 capture capabilities.
Additionally, my research on CO2 ECR has introduced a new electrocatalyst, Co-Ni-N-C, characterized by a bimetallic Co-Ni-N6 moiety. This catalyst demonstrates excellent efficiency in converting CO2 to carbon monoxide (CO), a crucial intermediate for higher carbon products. Addressing the challenge of advancing to C2 products, I have developed another catalyst, Cu3NPd, which stabilizes positively charged Cu sites essential for multicarbon product formation. This catalyst enhances CO binding and dimerization, aiming to increase the yield of C2 products.
Overall, my dissertation explores significant advancements in MOF synthesis and CO2 utilization, offering new insights into the development of functional materials for both CO2 capture and conversion. These contributions underscore the importance of innovative material design in addressing environmental challenges.
Rights
© The Author
Is Part Of
VCU University Archives
Is Part Of
VCU Theses and Dissertations
Date of Submission
5-3-2024