"Previous studies have yielded unconvincing and contradictory results, because the light stimulus always triggered a series of processes, making it difficult to distinguish the primary photoreaction
from the subsequent steps," says Dube.
Caption: Figure 4: X ray diffraction of Mg/Al hydrotalcites with different Mg/Al ratios activated at 500[degrees]C before photoreaction
kinetics was monitored via the IR spectra as a function of irradiation time.
This condition of photoreaction
was also sufficient to inactivate baculovirus in an indirect virus detection assay in which Sf9 cells were infected with UVDEX treated or nontreated baculovirus (data not shown).
A photocatalyst accelerates a photoreaction
in the presence of a catalyst.
Taking into account the linear relationship between the substrate concentration and the absorbance (Abs), which is described by the Lambert-Beer law, the resulting expression is (given by Equation 7; therefore, the obtained constants rate were taken from the initial photoreaction
region (up to 10 hours) in all cases.
The adsorption at different values of the initial concentration of the catalyst showed that for high concentrations of Ti[O.sub.2] the adsorption is unfavorable due to the agglomeration phenomena and this cause a reduction of specific surface available to the activation in a photoreaction
(Bekkouche, et al, 2004).
TABLE 1: Identification of the small molecular intermediates of aniline during the photoreaction
Average concentrations (ppb) of compounds measured in the photoreaction
It is considered an important step towards the production of a photoreaction
with the ability to convert carbon dioxide and atmospheric methane to chemicals at industrial scale.
measurement was estimated by monitoring the intensity changes of the cinnamate absorption at maximal value.
UV-B susceptibility and photoreaction
of arctic Daphnia morphotypes.