Deposits of clastic carbonate-dominated (calciclastic) sedimentary slope systems in the rock record have been identified mostly as linearly-consistent carbonate apron deposits, even though most ancient clastic carbonate slope deposits fit the submarine fan systems better. Calciclastic submarine fans are consequently rarely described and are poorly understood. Subsequently, very little is known especially in mud-dominated calciclastic submarine fan systems. Presented in this study are a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) that reveals a >250 m thick calciturbidite complex deposited in a calciclastic submarine fan setting. Seven facies are recognised from core and thin section characterisation and are grouped into three carbonate turbidite sequences. They include: 1) Calciturbidites, comprising mostly of highto low-density, wavy-laminated bioclast-rich facies; 2) low-density densite mudstones which are characterised by planar laminated and unlaminated muddominated facies; and 3) Calcidebrites which are muddy or hyper-concentrated debrisflow deposits occurring as poorly-sorted, chaotic, mud-supported floatstones. These

Phd by thesis

The surface science of titanium dioxide

Signaling Recognition Events with Fluorescent Sensors and Switches.

TiO2 photocatalysis and related surface phenomena

Ru(II) polypyridine complexes: photophysics, photochemistry, eletrochemistry, and chemiluminescence

Separation and oxidative degradation of organic pollutants in aqueous systems by pervaporation and vacuum-ultraviolet-photolysis

TiO2-codoped [FeII(bpy)3]2+/zeolite Y systems are revealed to be efficient photocatalysts for photochemically enhanced Fenton processes. Preparation, characterization, and tests using 2,4-xylidine as a model pollutant are described, and a first mechanistic hypothesis explaining the rather high photochemical reactivity of the catalyst system is given.

[FeII(bpy)3]2+/TiO2-codoped zeolites: synthesis, characterization, and first application in photocatalysis.

Aerosols of submicron polystyrene particles were oxidized by either vacuum-ultraviolet (VUV) irradiation in the presence of molecular oxygen (O2) and/or by ozone (O3). Different degrees of oxidation and oxidative degradation were reached by VUV-photolysis depending on radiant energy, O2 and H2O concentrations in the bulk gas mixture as well as on particle diameter. The same functionalization was obtained by exposing the aerosol to O3, however, oxidation, in particular oxidative degradation, was less efficient. The evolution of hydroxyl and carbonyl functions introduced was quantified by ATR-FTIR spectroscopy of filtered particles, and oxidative degradation of the polymer particles was confirmed by determining size and number of aerosol particles before and after oxidation. Efficiency analyses are based on the results of an O3 actinometry and on an evaluation of the rate of absorbed photons by the aerosol particles in function of their size.

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Oxidation of polystyrene aerosols by VUV-photolysis and/or ozone

Microheterogeneous systems consisting of sodium perfluorooctanoate (1), 2, 2, 3, 3, 4, 4, 4-heptafluoro-1-butanol (2), perfluorohexane (3) and water, representing the first practically perfluorinated microemulsions based on ionic surfactants have been formulated. A pseudoternary phase diagram shows a central region of turbid or transparent gels and two regions of monophasic systems (O/W- and W/O-microemulsions) which have been characterized by NMR. spectroscopy.

The Formulation of Four‐Components Practically Perfluorinated Microemulsions

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André M. Braun

Papers

Separation and oxidative degradation of organic pollutants in aqueous systems by pervaporation and vacuum-ultraviolet-photolysis

[FeII(bpy)3]2+/TiO2-codoped zeolites: synthesis, characterization, and first application in photocatalysis.

Oxidation of polystyrene aerosols by VUV-photolysis and/or ozone

The Formulation of Four‐Components Practically Perfluorinated Microemulsions

Colloidal and Supported TiO2: Toward Nonextractable and Recyclable Photocatalysts for Radical Polymerizations in Aqueous Dispersed Media