Heterogeneous Systems

Charge transfer processes in a heterogeneous system are important to understand the photo and radiation induced process in photoelectrochemical solar cells, energy conversion processes and chemical sensors. A basic understanding of the catalytic properties of representative oxides is also useful for developing photocatalytic or radiolytic treatment strategies for contaminated soils.

To understand the role of oxide surfaces in promoting photochemical and radiolytic transformations.

To elucidate the charge transfer interactions and probe photoinduced charge transfer at the solid/electrolyte interface

Carry out steady state radiolysis of organic compounds adsorbed on to silica, alumina, titania, zirconia, and zeolite and anayze the products and monitor the IR absorption using diffuse reflectance studies.
To employ radical reactions for monotoring the growth of metal particles and/or complexation with radicals and organic mlecules.
To probe the influence of surface in promoting photochemical transformations

Kamat, P. V., Photochemistry on nonreactive and reactive (semiconductor) surfaces. Chem. Rev., 1993, 93, 267-300

Zacheis, G. A., Gray, K. A. and Kamat, P. V., Radiation induced catalytic dechlorination of hexachlorobenzene on various oxide surfaces. J. Phys. Chem. B, 2001, 105, 4715-4720.

Sant, P. A. and Kamat, P. V., Inter-Particle Electron Transfer between Size-Quantized CdS and TiO2 Semiconductor Nanoclusters. Phys. Chem. Chem. Phys., 2002, 4, 198-203.

Lahiri, D., Subramanian, V., T.Shibata, Wolf, E. E., Bunker, B. A. and Kamat, P. V., Photoinduced Transformations at Semiconductor/Metal Interfaces: XAFS Investigation of UV-irradiated TiO2 /Au Films. J. Appl. Phys., 2003, 93, 2575-2582.

Subramanian, V., Wolf, E. E. and Kamat, P. V., Influence of Metal/Metal --Ion Concentration on the Photocatalytic Activity of TiO2-Au Composite Nanoparticles. Langmuir, 2003, 19, 469-474.

Barazzouk, S., Hotchandani, S. and Kamat, P. V., Unusual Electrocatalytic Behavior of Ferrocene Bound Fullerene Cluster Films. J. Mater. Chem., 2002, 12, 2021-2025

Kamat, P. V., Barazzouk, S. and Hotchandani, S., Nanostructured Fullerene Films. Adv. Mater., 2001, 13, 1614-1617.

.Pillai, Z. S. and Kamat, P. V., What Factors Control the Size and Shape of Silver Nanoparticles in the Citrate Ion Reduction Method. J Phys. Chem. B, 2004, 108, 945-951.