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.
Results
Showing 1 to 20 of 76 for “"Titanium dioxide (TiO2)"”.
-
Titanium dioxide (TiO2) as buffer layer in organic solar cell device
… and ITO. By introducing thin buffer layer of titanium dioxide (TiO2) between ITO and PCBM may improve overall efficiency of the inverted structure OSC because the new suggested interlayer provide efficient pathway for electrons collections. The aim of this research is to fabricate an inverted …
-
Photodegradation of biopolymer doped with titanium dioxide (TiO2) as ultraviolet (UV) stabilizer
… oxide filler which is 2.5, 5, 7.5 and 10 % of titanium dioxide (TiO2) to form biopolymer composite (BPC). The resistance to UV light and mechanical properties of BP and BPC were determined after exposure the thin films in UV weatherometer for an extended period of time at 250, 500, 750,1000, …
-
Photodegradation of biopolymer doped with titanium dioxide (TiO2) as ultraviolet (UV) stabilizer
… oxide filler which is 2.5, 5, 7.5 and 10 % of titanium dioxide (TiO2) to form biopolymer composite (BPC). The resistance to UV light and mechanical properties of BP and BPC were determined after exposure the thin films in UV weatherometer for an extended period of time at 250, 500, 750,1000, …
-
Effect of Ionic Liquid Electrolytes in DSSCs with Titanium Dioxide (TiO2) Inverse Opal Structures
… incomplete infiltration of the DSSC’s nanoporous TiO2 electrode. Here, we present a study of DSSCs with TiO2 inverse opal electrodes of controlled pore sizes (0.1-1 m) and ionic liquid derivatives of 1-alkyl-3-methylimidazolium tetrafluoroborate (alkyl: ethyl, butyl, and decyl) with viscosities …
-
Optimization of titanium dioxide (TiO2) thin film using dip coating technique for oxygen gas sensor
Titanium dioxide (TiO2) thin film gas sensors have been widely used and investigated in the detection of target gases. However, to obtain anatase phase for oxygen gas sensor with low and short annealing temperature is the obstacle in the fabrication of oxygen gas sensor. It is thus desirable to …
-
Evaluation and testing of a novel photocatalytic reactor with model water pollutants.
… reactor, which employs a commercial pellet titanium dioxide (TiO2) catalyst, was tested for water treatment capability by investigating the photocatalytic degradation of contaminants from waste water discharges such as; hydrocarbons in produced water from the oil industry and synthetic dyes …
-
A quantum dot heterojunction photodetector
… sandwiched between an electron-transporting titanium dioxide (TiO2) layer and a hole-transporting N,N' diphenyl-N,N' bis(3-ethylphenyl)-(1,1'-biphenyl)- 4,4'-diamine (TPD) organic small molecule layer. The wide band gap TiO2 and TPD layers are found to block charge injection under reverse …
-
On the phase transition and photo-reactivity on the micro-sized titanium dioxide single crystal.
Titanium Dioxide (TiO2) has been extensively studied across various fields including photocatalysis, electrochemistry, optics, etc. Studying the micro-sized TiO2 single crystals could bridge the gap between the nano-sized crystal TiO2 results and theoretical studies on their bulk crystals and …
-
Investigation of flow-limited field-injection electrostatic spraying for nanofabrication and direct-write patterning: Application to dye-sensitized solar cells
… controlled nanostructure of the mesoporous titanium dioxide (TiO2) electrode. This work concentrates on the investigation of flow-limited field-injection electrostatic spraying (FFESS) and its application in the advancement of dye-sensitized solar cell research. This includes a fundamental …
-
Ultraviolet-C Powered Air Purifying Respirator (UVC PAPR)
… built an alternate ultraviolet-A (UVA) activated titanium dioxide (TiO2) photocatalytic oxidation (PCO) chamber. This work encompasses the overall design of the system, safety considerations, and testing to quantify its pathogen inactivation efficacy and to characterize system performance.
-
Band Gap Engineering Of Titania Systems Purposed For Photocatalytic Activity
… extrapolate material properties and behavior. Titanium dioxide (tio2) is one such material that stands to gain a great deal from the use of these simulations. In its anatase form, titania (tio2) has been found to exhibit a band gap nearing 3.2 ev. If titania is to become a viable alternative to …
-
Synthesis and characterization of nanostructured catalysts for photovoltaic applications
… to investigate the effect of the morphology of titanium dioxide (TiO2) nanoparticles on the electron transport properties and light harvesting potential in a dye sensitized solar cell (DSSC). Particular attention was given to develop synthetic methods to produce metal oxide photocatalysts with …
-
New Forms of Defect Engineering in Silicon and Metal Oxide Semiconductors
… semiconductors as well, such as metal oxides. Titanium dioxide (TiO2) is an ideal test case because of the presence of charged point defects and also its broad applications. Through nonthermal optical stimulation the results show that illumination inhibits the diffusion of oxygen in TiO2.
-
Study of Semiconducting Nanomaterials: Photoelectrochemistry and Dynamic Light Scattering
… collision studies of bare and sensitized titanium dioxide (TiO2) nanoparticles (NPs). A detailed study of NP colloidal behavior has been described with respect to dynamic light scattering (DLS) measurements. In our system, we studied electron transfer across the semiconductor (SC) …
-
Mesoporous ZnO/TiO2 nanowire heterojunction photo-anodes for quantum-dot sensitised solar cells
… offer an interesting alternative to traditional titanium dioxide (TiO2) as an electron transport layer in QDSSCs primarily due to their superior electron mobility and direct growth capabilities. Their one-dimensional nanostructure provides a direct pathway for electron transport, significantly …
-
Computational study of low index surface of an anatase TiO2 doped with ruthenium (Ru) and strontium (sr) for application in Dye sensitized solar cells
Titanium dioxide (TiO2) is considered to be an ideal semiconductor for photocatalysis because of its high stability, low cost and safety towards both humans and the environment. Doping TiO2 with different elements has attracted much attention as the most important way of enhancing the visible light …
-
Charge transfer engineering in Phenyl-modified Carbon Nitride-based hybrid systems: from powder Photocatalysts to Thin films
… concept, PhCN is combined with carbon nanotubes, titanium dioxide (TiO2), and zinc oxide (ZnO) to construct hybrid photocatalysts and thin films. Powder-based systems provide insight into interfacial charge transfer mechanisms and photocatalytic performance under visible light. To address …
-
Oxidation barrier and light protective packaging properties for controlling light induced oxidation in milk
… light interference properties (UV barrier, 2.1% titanium dioxide (TiO2) LPA, 4.0% TiO2 LPA, 6.6% TiO2 LPA) under light exposure up to 72h was compared to control packages (light-exposed, light-protected). Chemical measures of oxidation included dissolved oxygen content, formation of secondary …
-
Characteristic of renewable polymer incorporated with stabilizer to characterize the endurance to ultra voilet irradiation exposure
… polyphenyl isocyanate, distilled water and titanium dioxide (TiO2) as filler to form renewable polymer. Two fabrication method was used; (i) manual casting which produced renewable polymer foam (RF) and (ii) compression moulding at 90 oC based on the evaporation of volatile matter and the …
-
Harnessing solar energy: vapor phase polymerized poly(3,4-Ethylenedioxythiophene) for solid state dye-sensitized solar cells and the photodegradation of organic toxicants
… it has the potential to penetrate the mesoporous titanium dioxide (TiO2) which can improve the interaction between the dye and hole transport layer PEDOT.</p> <p>There has also been an increased interest in TiO2 fibers as a photocatalyst for the degradation of persistent organic and …
Page 1 of 4