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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

Investigation of the Formation and Photo-activity of Titanium Dioxide and Polyelectrolytes

McAuley, Scott 12 January 2011 (has links)
Anatase titanium dioxide was synthesized using a hydrothermal treatment of bis(ammonium lactato) titanium dihydroxide (ALT) under a variety conditions. Heating the precursor produces highly crystalline particles that do not undergo a crystal phase transition upon calcination; however, it does remove a layer of surface adsorbed lactate. Three titanium-polyelectrolyte composites (PAA, PAH, and PEI) were formed through electrostatic polymer chain collapse. In order to gain a measure of the relative photo-activity of these various samples the interaction and de-colouration of methylene blue (MB) was investigated. The composite particles were not active whereas the non-composite titanium dioxide and solution phase PAA were individually active. MB was found to form dimers with anionic PAA through electrostatic interaction; however, there was no difference in the de-colouration rate of these dimers versus the monomers. Finally, it was found that pre-irradiating the polyelectrolyte prior to combining with MB decreases the de-colouration rate.
52

Investigation of the Formation and Photo-activity of Titanium Dioxide and Polyelectrolytes

McAuley, Scott 12 January 2011 (has links)
Anatase titanium dioxide was synthesized using a hydrothermal treatment of bis(ammonium lactato) titanium dihydroxide (ALT) under a variety conditions. Heating the precursor produces highly crystalline particles that do not undergo a crystal phase transition upon calcination; however, it does remove a layer of surface adsorbed lactate. Three titanium-polyelectrolyte composites (PAA, PAH, and PEI) were formed through electrostatic polymer chain collapse. In order to gain a measure of the relative photo-activity of these various samples the interaction and de-colouration of methylene blue (MB) was investigated. The composite particles were not active whereas the non-composite titanium dioxide and solution phase PAA were individually active. MB was found to form dimers with anionic PAA through electrostatic interaction; however, there was no difference in the de-colouration rate of these dimers versus the monomers. Finally, it was found that pre-irradiating the polyelectrolyte prior to combining with MB decreases the de-colouration rate.
53

Synthesis of cationic macromonomers by living polymerizations for comb-branched polyelectrolytes /

Zeng, Faquan. January 2001 (has links)
Thesis (Ph.D.) -- McMaster University, 2001. / Includes bibliographical references. Also available via World Wide Web.
54

Synthesis and characterization of polyelectrolytes and aqueous latices.

Wu, Xiao Yu. Pelton, R.H. HAMIELEC, A.E. WOODS, D.R. Unknown Date (has links)
Thesis (Ph.D.)--McMaster University (Canada), 1993. / Source: Dissertation Abstracts International, Volume: 54-12, Section: B, page: 6237. Advisers: R. H. Pelton; A. E. Hamielec; D. R. Woods.
55

Polyelectrolyte multilayer coatings for conductive nanomaterials patterning and anti-wrinkling applications

Hendricks, Troy Richard. January 2008 (has links)
Thesis (Ph.D.)--Michigan State University. Dept. of Chemical Engineering, 2008. / Title from PDF t.p. (viewed on Apr. 3, 2009) Includes bibliographical references (p. 75-84). Also issued in print.
56

Influence of the membrane ion exchange capacity on the catalyst layer of proton exchange membrane fuel cell /

Navessin, Titichai. January 1900 (has links)
Thesis (Ph.D.) - Simon Fraser University, 2004. / Theses (Dept. of Chemistry) / Simon Fraser University. Includes bibliographical references.
57

Modeling and analysis of proton exchange membrane fuel cell /

Parikh, Harshil R. January 2004 (has links)
Thesis (M.S.)--Ohio University, March, 2004. / Includes bibliographical references (leaves 69-71).
58

DNA condensate morphology Examples from the test tube and nature /

Vilfan, Igor Drasko. January 2005 (has links)
Thesis (Ph. D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2006. / Nicholas V. Hud, Committee Chair ; Donald F. Doyle, Committee Member ; Rigoberto Hernandez, Committee Member ; Roger M. Wartell, Committee Member ; Loren D. Willliams, Committee Member.
59

Kinetics and catalysis of the water-gas-shift reaction : a microkinetic and graph theoretic approach

Callaghan, Caitlin A. January 2006 (has links)
Dissertation (Ph.D.)--Worcester Polytechnic Institute. / Keywords: microkinetics, reaction routes, mechanism analysis, water-gas-shift. Includes bibliographical references (p.295-305).
60

Modeling and analysis of proton exchange membrane fuel cell

Parikh, Harshil R. January 2004 (has links)
Thesis (M.S.)--Ohio University, March, 2004. / Title from PDF t.p. Includes bibliographical references (leaves 69-71)

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