Photocatalytic materials

Advanced photocatalytic materials by nanocarbon hybrid materials... 

Wang H, Lewis JP (2006) Second-generation photocatalytic materials anion-doped Ti02. J Phys-C, 18 421-434... 

On the fundamental side, the research on photocatalysis has focused on several topics, including a) the primary processes involved in the production and trapping of photogenerated electrons and holes, using pulsed femtosecond or picosecond laser techniques, b) measurements on the kinetics of the photodecomposition processes on longer time scales, and c) measurements on the kinetics on small size scales. For the first topic, the reader is referred to several recent publications.69-7 This work is of great practical importance, because it helps to point out the critical factors involved in the photocatalytic materials themselves. 

Wang, H. and J.P. Lewis (2006). Second-generation photocatalytic materials Anion-doped Ti02. Journal of Physics-Condensed Matter, 18(2), 421 134. 

Photocatalytic Materials for Water Splitting See Entry 13 above. 77... 

A. Heller and his group has suggested using these photocatalytic methods for treatment of oil slicks, which is a very interesting and economical application [222]. In order to keep the photocatalytic material on the surface of the sea, these researchers have deposited the Ti02 on hollow microbeads of aluminosilicate. The properties of these microsystems are still under investigation. 

Incorporation of titanium oxide species within the framework of mesoporous silicas has been shown to produce highly efficient photocatalytic materials. Extremely careful preparation conditions [84] leads to highly structured materials comprising anatase nanoparticles of dimension between 5 and 10 run. The channeled structure, together with the hydrophobic/hydrophilic character, are also key features controUing their enhanced photoreactivity. The photocatalytic activity of such mesoporous catalysts has been studied for the degradation of phenol in aqueous solutions [85]. It was observed that for structured mesoporous materials with low Ti content, the turnover frequency was four times greater than that for standard P25. 

Apart from oxides such as TiO2, ZnO, and ZrO2, sulfides (typically CdS), nio-bates, tantalates, titanates, and other compounds have been tested as photocatalytic materials for splitting water. Composites (Kida et al., 2003 Rincon et al., 2007) and porous materials (Velaski et al., 2006) have been introduced as electrode materials in photovoltaic cells in the last years. 

The CO2 adsorption and the concurrent reaction with the electrons highly depends on the nature of the material surfaces. Not all the semiconductors have the similar surface arrangement, therefore, the reaction pathway and the interaction of CO2 moiety with surfaces varies according to the materials used. The product and yield vary within the titanium dioxide compounds itself [124]. Since the CO2 reduction doesn t only depend on the visible light activity of the photocatalytic material, but also many other fac-... 

Since 1980, the applications zeolites and molecular sieves in the speciality and fine chemicals increased enormously. Zeolites are being used in the various types of reactions like cyclization, amination, rearrangement, alkylation, acylations, ammoxidation, vapour and liquid phase oxidation reactions. Zeolites and molecular sieves have also been used to encapsulate catalytically active co-ordination complexes like ship-in-bottle and as a support for photocatalytic materials and chiral ligands. Redox molecular sieves have been developed as an important class of liquid and vapour phase oxidation and ammoxidation reactions. We have discussed few typical recent examples of various types of reactions. 

Develop a prototype multi-cell reactor for high throughput evaluation of the electrochemistry of photocatalytic materials... 

We are using a combinatorial approach to discover new photocatalytic materials, which can generate hydrogen using visible light. By first... 

In Situ Studies on Photocatalytic Materials, Surface Intermediates, and Reaction Mechanisms... 

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