Molecules Photodegradation
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Layered Zinc Hydroxide Salts Intercalated with Anionic Surfactants and Adsolubilized with UV Absorbing Organic Molecules
Two anionic surfactants, dodecylsulfate (DDS) and dodecylbenzenesulfonate (DBS), were intercalated into layered zinc hydroxide salts (LHS) using the direct alkaline co-precipitation method, and characterized by powder X-ray diffraction (PXRD), Fourier-transform infrared (FTIR) and thermogravimetric analysis/differential thermal analysis (TGA/DTA). Different
J. Braz. Chem. Soc.. Publicado em: 2015-09
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2. Estudo das interações entre os fungicidas (carbendazim e fuberidazole) e as partículas de argila em suspensão aquosa. Adsorção, fotofísica e fotoquímica / Study of the interaction between fungicides (carbendazim and fuberidazole) and the clay particles in suspension aqueous. Adsorption, photophysical, photochemical
In the present work, studies on the interaction between the fungicides (carbendazim and fuberidazole) and clay particles in aqueous suspension. It has been studied by isotherm adsorption, UV spectroscopy, emission of fluorescence and X-Ray. The results were fitted according the Langmuir, Freundlich and Dubinin- Radushkevich isotherms indicating a high affini
Publicado em: 2009
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3. Fotodegradação de polímeros solúveis em água e moléculas modelo via processos oxidativos avançados / Photodegradation of water soluble polymers and model molecules via advanced oxidative processes
The aim of this work was to investigate polymer photodegradation mechanisms and stabilizing agents. The course of photooxidative degradation of some water soluble polymers (poly(vinylpyrrolidone), PVP; poly(acrylamide), PAM and poly(ethylene glycol), PEG) in the presence of hydrogen peroxide, Fenton reagent and iron salt has been investigated. PVP showed the
Publicado em: 2008
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4. Estudo dos mecanismos de fotodegradação de corantes sobre dióxido de titânio através de técnicas de espectroscopia Raman intensificadas / Study of photodegradation mechanisms of dyes on titanium dioxide through techniques of Raman spectroscopy intensified
The use of spectroscopic techniques for the study of environmental questions is a research area has been experiencing important developments in recent years. These techniques embrace intensified spectroscopic methods, which offer great sensibility and selectivity for the detection of chemical species in low concentrations. In this work, we propose the introd
Publicado em: 2005
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5. Polymeric nanocomposites containing azodyes, phthalocyanines and luminescent polymers / Compósitos poliméricos nanoestruturados de azocorantes,ftalocianinas e polímeros luminescentes
This thesis describes the fabrication and possible applications of layer-by-Iayer (LBL) nanostructured films for three distinct systems comprising i) azopolymers and azodyes, ii) organometallic molecules (phthalocyanines) and iii) luminescent polymers and azodyes. Optically induced birefringence and surface relief gratings (SRGs) were studied in the azobenze
Publicado em: 2003