This indicates thatlight is necessary for photosynthesis.
Harnessing solar energy has recently attracted much attention due to the increased importance of environmental and energy issues. In particular, the photolysis of water using photocatalysts, so called artificial photosynthesis, has been receiving great attention in terms of the direct and efficient solar energy conversion system to produce O2 and H2 as chemical fuels. The effectiveness of water splitting using photocatalysts is determined by the utilization of visible light of the solar spectrum, capacity of the harvested light to generate charge carriers, and the extent of charge separation and transfer. Thus, the selection of semiconducting photocatalyst materials with proper band position, bandgap energy, and long-lived stability is critical for the viable water splitting system. Herein we report on the synthesis of highly porous, 1-D tungsten-doped BiVO4 nanofibers (W:BiVO4 NFs). To facilitate photocatalysis, we introduced nickel nanoparticles (NiOx NPs) as co-catalysts on the surface of the W:BiVO4 NFs. The outstanding water oxidation performance of the NiOx NPs-functionalized W:BiVO4 NFs were obtained through (i) the control of polymer/precursor to achieve porous W:BiVO4 NFs (for higly increased surface area), (ii) the control of tungsten-doping level (for fast charge transfer), and (iii) the optimization of the loading amounts of NiOx NPs (for efficient charge pathway suppression of charge recombination).
The aim was to show that light is necessary for photosynthesis.
Nov 26, 2009 · Is light necessary for photosynthesis?
The light intensity atthis point is called the light compensation point, and it represents thelight intensity at which O2 production in photosynthesis is balanced byO2 consumption in respiration.
Come light is necessary for photosynthesis.
Interestingly, those seagrass specimens acclimated to high light (where high rates of photosynthesis and consequent uptake of bicarbonate would be highest) showed the greatest ability to actively take up bicarbonate. In high light experiments, these previously high light-acclimated specimens were shown to be only light limited, while the shade-acclimated organisms were both light and carbon limited when put into high light. Other seagrass species (e.g., and ) have been shown to have external carbonic anhydrase, and so may have different uptake mechanisms.