Photooxidation pathway of sulforhodamine-B. dependence on the adsorption mode on Ti02 exposed to visible light radiation

Article Abstract:

University researchers from China, Japan and Canada investigated the kinetics of sulforhodamine-B photooxidation in aqueous media in the presence of Ti02 to determine the type of species and pathways produced in the reaction.

China, Research and Testing Services, Scientific Research and Development Services, Research & Development-Universities, Brief Article, Oxidation-reduction reaction, Oxidation reduction reactions, Sulfur compounds, University research, Titanium

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Photoassisted degradation of dye pollutants. 3. Degradation of the cationic dye rhodamine B in aqueous anionic surfactant/TiO2 dispersions under visible light irradiation: evidence for the need of substrate adsorption on TiO2 particles

Article Abstract:

The rhodamine B (RhB) chromophore can be photodegraded on the TiO2 particle surface under visible light illumination. This can be done through a process involving electron injection sensitization of TiO2. The preadsorption on the surface of TiO2 particles is precondition for skillful photodegradation of RhB under visible light irradiation. The degradation happens at the particle surface and not in the solution bulk. Adsorption and photodegradation of RhB are greatly intensified by adding the anionic surfactant sodium dodecylbenzenesulfonate to the aqueous TiO2 dispersions.

Comment:

The rhodamine B chromophore can be photodegraded on the TiO2 particle surface under visible light illumination

United States, Synthetic Organic Dye and Pigment Manufacturing, Organic Dyes & Pigments, Organic dyes, Article

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Photocatalyzed degradation of polymers in aqueous semiconductor suspensions. 3. Photooxidation of a solid polymer: TiO2-blended poly(vinyl chloride) film

Article Abstract:

Researchers from Canada and Japan performed photoxidation using UV irradiation and sunlight on a TiO2-blended polyvinyl chloride film and analyzed its dechlorination and CO2 evolution.

Plastics Material and Resin Manufacturing, Plastics materials and resins, Polyvinyl Chloride, Polymer industry, Polyvinyl chloride industry

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