We report on the adsorption of CdSe/ZnS quantum dots and its effects on algal photosynthesis. A logarithmic trend was established for the adsorption process using UV−vis spectrophotometry, with Freundlich constants determined as k = 0.588 ppm 1− n and n = 0.629. Both our CO 2 depletion and O 2 production assays showed a significantly inhibited photosynthetic activity of the algae exposed to the quantum dots, suggesting the potential impact of nanoparticle adsorption on the photochemistry of plant species.
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Lin et al. (2009) studied this question.
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