Charge separation and surface reconstruction: A [Mn.sup.2+] doping study

Article Abstract:

The hydrothermal synthesis of Mn doped anatase (Ti[O.sub.2]) nanoparticles, which uses scrolled nanotubes of Ti[O.sub.2] and Mn[Cl.sub.2] as the starting materials, is presented. The results have indicated that while doping of the bulk region contributes to magnetic properties, doping of the surface region has played a major role in the primary events of charge separation and can be used for tuning the charge separation processes in nanoparticles.

Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Manganese, Manganese (Metal), Nanotechnology, Thermal properties, Magnetic properties

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Complex and charge transfer between Ti[O.sub.2] pyrroloquinoline quinone

Article Abstract:

The coupling of pyrroloquinoline quinone (PQQ) onto the Ti[O.sub.2] and the light-induced charge separation and interfacial electron transfer that extends from the PQQ-Ti[O.sub.2]/dopamine (PQQ-Ti[O.sub.2]/DA) triad are described. The results have shown that PQQ-Ti[O.sub.2]/DA triad has unique photoelectrochemical properties that promote spatial separation of photogenerated charges, holes localized at dopamine and electrons at PQQ.

Usage, Quinone, Quinones, Charge transfer, Photoelectron spectroscopy

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Revealing the nature of trapping sites in nanocrystalline titanium dioxide by selective surface modification

Article Abstract:

The study of the effect of enediol modification of surface Ti atoms on the electronic properties of excess electrons injected by electron- beam radiolysis is described. The results suggest that the bidentate dopamine complex is more efficient for charge separation than the carboxyl complex with surface Ti atoms.

Radiolysis

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