New route to synthesize highly active nanocrystalline sulfated titania-silica: Synergetic effects between sulfate species and silica in enhancing the photocatalysis efficiency

Article Abstract:

A simple and efficient approach to produce highly active nanocrystalline SO4(super 2-)/TiO2-SiO2 is reported and the favorable synergetic effects between sulfate species and silica in enhancing its photocatalysis efficiency is revealed. The results revealed that for SO4(super 2-)/TiO2 and TiO2-SiO2 the sole presence of either sulfate species or silica imposes negative effects on the photocatalysis behavior of titania, leading them to have negligible photoactivities.

Catalysis, Sulfates

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A strategy to increase the efficiency of the dye-sensitized TiO(sub 2) solar cells operated by photoexcitation of dye-to TiO(sub 2) charge-transfer bands

Article Abstract:

A strategy to increase the efficiency of the dye-synthesized TiO(sub 2) solar cells (DSSC) operated by phooexitation of dye-to-TiO(sub 2) charge-transfer bands is presented. It is shown that the increase of dye-to-TiO(sub 2) -charge-transfer (DTCT) band resulted in the increase of fill factor from 62.6% to 72.3% and provides n insight into the strategy to increase the eta value of type-II DSSCs.

Photochemical research

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Uphill energy trapping by reaction center in bacterial photosynthesis. 2. Unistep charge separation, virtually mediated by special pair, by photoexcitation in the place of excitation transfer from the antenna system

Article Abstract:

An experiment is proposed to investigate unifiedly the differences in the energy trapping process by the reaction center (RC) of Rhodobacter sphaeroides and Rhodopseudomonas virdis. The experiment involves the direct photoexcitation of RC in place of excitation transfer from the core antenna LH1.

Chemistry, Physical and theoretical, Physical chemistry, Excited state chemistry

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