Development of 3D MOF Nanocomposites with Semiconducting Behavior for Resistive Gas Sensors and Photodetectors Applications

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dc.contributor.advisorKim, Seonghwan (Sam)
dc.contributor.authorHimayoonnia, Setareh
dc.contributor.committeememberDu, Ke
dc.contributor.committeememberKim, Keekyoung Kim
dc.date.accessioned2023-12-18T18:54:17Z
dc.date.available2023-12-18T18:54:17Z
dc.date.issued2023-12-05
dc.description.abstractThis thesis presents a comprehensive exploration of three distinct projects involving novel nanocomposites consisting of metal-organic frameworks (MOFs) combined with multiwall carbon nanotubes (MWCNTs) and carbon nanofibers (CNFs). These projects encompass methane (CH4) detection, the application of MOF composites for diabetes diagnosis through acetone detection, and their utilization as advanced photodetectors. In the first project, addressing the critical issue of CH4 detection, an innovative MOF/MWCNTs-based resistive sensor was developed. CH4 detection is crucial due to its environmental and safety implications. Existing detection methods often struggle with low concentrations of CH4 at room temperature (RT), typically within the range of a few parts per million (ppm). The developed sensor offers cost-efficiency, reliability, high sensitivity, and selectivity, presenting a breakthrough technology with the potential to significantly enhance environmental monitoring and industrial safety. The second project focuses on diabetes management, a global health concern. Traditional invasive blood glucose measurements can be cumbersome. To simplify and improve diabetes monitoring, the research investigates non-invasive nanomaterial-based gas sensors for detecting acetone, a diabetes biomarker. The developed MOF/MWCNTs nanocomposite resistive sensor offers selective detection of acetone at RT and atmospheric pressure, exhibiting remarkable sensitivity. The limit of detection is three orders of magnitude lower than the concentration of acetone in the exhaled breath of diabetic patients. The third project explores the application of MOF/CNF nanocomposites in photodetectors, crucial components in various technological domains. Traditional photodetectors face limitations, such as broadband absorption and the need for costly optical filters in narrowband applications. The introduced MOF/CNF nanocomposites address these challenges, combining the strengths of MOFs and CNFs while mitigating their weaknesses. This research not only overcomes limitations in traditional and recent nanomaterials-based photodetectors but also extends the capabilities of three-dimensional (3D) MOFs in narrowband photodetection applications, potentially revolutionizing photodetection technology. Overall, this thesis explores the potential of MOF-based nanocomposites in addressing critical challenges in CH4 detection, diabetes management, and photodetection, holding promise for environmental preservation, healthcare, and technological advancements.
dc.identifier.citationHimayoonnia, S. (2023). Development of 3D MOF nanocomposites with semiconducting behavior for resistive gas sensors and photodetectors applications (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.
dc.identifier.urihttps://hdl.handle.net/1880/117629
dc.language.isoen
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgary
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subject.classificationEngineering
dc.titleDevelopment of 3D MOF Nanocomposites with Semiconducting Behavior for Resistive Gas Sensors and Photodetectors Applications
dc.typedoctoral thesis
thesis.degree.disciplineEngineering – Mechanical & Manufacturing
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.thesis.accesssetbystudentI require a thesis withhold – I need to delay the release of my thesis due to a patent application, and other reasons outlined in the link above. I have/will need to submit a thesis withhold application.
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