Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"Carbon dots"”.
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Carbon dots as sustainable photocatalysts for organic synthesis
… and environmentally benign materials, carbon dots (CDs) have the potential to replace costly or harmful photocatalysts for a range of synthetically relevant transformations. This dissertation aims to establish CDs as versatile, sustainable photocatalysts for organic synthesis. Chapter 2 …
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INVESTIGATION OF CARBON DOTS BEHAVIOR: DIFFUSIOPHORESIS AND INFLUENCE ON THE OIL-WATER INTERFACES
Carbon dots (CDs) are promising for enhanced oil recovery, medical and environmental applications, but the successful implementation of CDs in these fields needs a comprehensive understanding of their transport behavior within solvent gradients and their influence on interfacial tension and surface …
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Experimental characterization and computational modeling of N-doped Carbon Dots for future optoelectronic applications
… low-cost alternative is currently represented by carbon-based nanoparticles known as Carbon Dots that generally display low toxicity and excellent biocompatibility. Their most important feature is their efficient fluorescence in the visible region that in most cases varies with the excitation …
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CAPILLARY ELECTROPHORESIS ANALYSIS OF SINGLE-STRANDED DNA APTAMERS AND THEIR INTERACTIONS WITH PROTEIN TARGETS AND CARBON DOTS
… and CE-LIF) was used to explore whether or not carbon dots (CDs) could significantly change the mobility of ssDNA samples upon noncovalent interaction. Preliminary observations revealed substantial interactions between carbon dots and ssDNA, as evidenced by changes in fluorescence emission of …
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From purification, spectroscopy, and microscopy of carbon dots to synthesis modeling and AI-assisted spectral data extraction
Carbon dots (CDs) occupy a unique niche among nano-sized fluorescent materials. This dissertation integrates purification-first experiments, single-particle multimodal characterization, physical modeling, and AI-assisted data curation. Part A develops and applies rigorous purification and …
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Hydrothermal synthesis and characterization of carbon dots for enhanced biosensing: A focus on optical properties and DNA interactions
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-12-01
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Next generation multi-color carbon dots: A comprehensive understanding of their photophysical properties and subsequent use for biomedical applications
As an upcoming and emerging class of carbon-based nanomaterials, carbon dots (CDs) have garnered widespread attention amongst researchers over the past decade owing to their strong optical properties, water solubility, excellent biocompatibility, and easy synthetic procedures. These remarkable …
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Group IV element-based luminescent nanoparticles: synthesis, environmental impact evaluation and bio-imaging applications
… Si, and Ge) based fluorescent materials, such as carbon dots, Si or Ge semiconductor nanocrystals, are finding favor in researchers’ eyes as they are conventionally considered as non-toxic elements and pose negligible influence on both the environment and human health. Under such context, this …
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Sustainable photocatalysis using carbon-based materials through interfacial and solvent engineering
… attention as a pathway toward a sustainable carbon economy. Among the wide range of semiconducting materials investigated, carbon-based nanomaterials have been considered as promising candidates due to their non-toxicity, scalability, cost-effectiveness, and distinctive optical and …
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A drug-free theranostic approach for localized and systemic diseases via nanoparticles
… modalities. These nanoparticles are based on carbon dots and hafnium oxide which can be imaged with fluorescent imaging and CT imaging as two major imaging modalities in the clinic. The surface-modified nanoparticles were utilized in this thesis to work out the localized diseases (dental …
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RECYCLING OF WASTE BLOOD INTO FUNCTIONAL CARBON NANOPARTICLES
… converting expired blood into hemoglobin-derived carbon nanoparticles (Hemodots, HDs) with potential biomedical applications. The study addresses challenges in blood waste management and explores alternative anticoagulant therapies. Through a hydrothermal process, optimal conditions for HD …
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Micro- and nanostructured materials via ultrasonic spray pyrolysis
… USP preparation of gold nanoparticles in porous carbon, and the USP preparation of porous metal oxide. Another example of using traditional synthetic method to produce fluorescent carbon nanoparticles will also be demonstrated. First, USP has been applied to produce gold nanoparticles …
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Dynamic imaging of nanoparticles on femtoseconds to minutes time scale at atomic resolution
… manipulating of energy transfer in PbS quantum dots, the imaging of polarization-dependent plasmons on gold nanoislands, and the unraveling of the carbon dot's fluorescence mechanism. Building on this success, a femtosecond time-resolved optical setup has been implemented to integrate the extra …
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Chemical modification of petroleum coke and applications of derived materials
… and is a solid product mainly composed of carbon (> 80 wt%) with some impurities. These impurities, in particular sulfur, limit petcoke as feedstock for the application-like fuel. The aim of this thesis was to explore the possible application of petcoke without activation procedure, which …
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Using light to control and investigate cell biology
It is no surprise that light plays an important role in life. With the development of modern technologies, light has also proven to be a powerful tool for the interrogation of molecular and cellular biology. Beyond its use in microscopic applications, light has emerged as an attractive modulator of …
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The Fundamental Photophysics of Fluorescent Carbon Nanodots
Carbon Nanodots (CDs) are a new protagonist of carbon-based nanoscience by which the paradigm of carbon as a black material unable to emit light has been completely revolutionised. They have been emerging as a new frontier in Nanoscience at the beginning of 2000s, and their potential is evident …
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Photoelectrochemical and Chemoenzymatic Reforming for Sustainable Fuel Production
… semiconductor photocatalysts based on TiO₂, CdS, carbon-nitrides (CNx) and carbon dots (CDs) have been widely used for the photocatalytic reforming (PC reforming) of pre-treated waste substrates to organic products, accompanied with clean hydrogen (H₂) generation. However, these conventional …
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The in vitro effects of heavy metals and nanoparticles on the immune system
… graphene oxide nanoparticles (GONPs) and carbon dots (CDs). These compounds were selected to evaluate the potential effects these compound may have on the immune system. The murine macrophage cell line RAW 264.7 and human whole blood cell cultures (WBCs) were selected as immune system …
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Tailoring the redox enzyme-material interface for enhanced electro- and photocatalytic fuel synthesis
The utilisation of sunlight to convert carbon dioxide (CO2) to glucose in natural photosynthesis serves as inspiration for the design of (semi)artificial systems which convert electrical or solar energy into chemical fuels. These artificial (photo)synthetic systems are generally comprised of either …
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Understanding the Toxicity Effects of Nanostructures: I. Effect of Physico-chemical Properties on Environmentally Relevant Organismal Toxicity. II. Design of Novel Nanostructures to Reduce Environmental Toxicity while Retaining Functional Properties
… reduction through engineering. Nano silver, nano carbon, and nano copper were chosen as the subjects of study due to their prevalent use in consumer products, and likely entrance into the environment during use and disposal. </p><p>The majority of the research focuses on silver nanomaterials …
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