Dissertation/Thesis Abstract

Design, synthesis, and characterization of medium band gap semiconductors for photocatalytic wastewater remediation
by Milam-Guerrero, JoAnna Lee, M.S., California State University, Long Beach, 2015, 91; 1595783
Abstract (Summary)

Using TiO2 as a standard of comparison, the synthesis and characterization of novel photocatalysts are discussed. An introduction to photocatalysts is given, followed by solid-state synthesis theory and methodology. TiO2-assisted photocatalytic degradation of Methylene Blue (a wastewater contaminant) was investigated using a solar simulator. The degradation as a function of time was monitored by samples being taken at different times throughout the exposure within the solar simulator. The absorbance of each solution was quantified employing a UV-Vis spectrophotometer. In addition, the role of particle size, suspension, electron doping, and light intensity in photocatalytic performance of TiO2 was investigated. Furthermore, solid-state theory was used to create a novel synthetic route for transition metal oxynitride phases.

Methods of characterization and respective data discussed include Powder X-ray Diffraction, Diffuse Reflectance, Particle Sizing, and UV-Vis spectrophotometry.

Indexing (document details)
Advisor: Derakhshan, Shahab
Commitee: Brazier, Christopher, Mezyk, Stephen
School: California State University, Long Beach
Department: Chemistry and Biochemistry
School Location: United States -- California
Source: MAI 55/01M(E), Masters Abstracts International
Subjects: Chemistry, Inorganic chemistry
Keywords: Photocatalyst, Titanium dioxide
Publication Number: 1595783
ISBN: 978-1-321-95305-3
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