Effects of Quantum Dots Adsorption on Algal Photosynthesis

被引:77
作者
Lin, Sijie [1 ]
Bhattacharya, Priyanka [1 ,4 ]
Rajapakse, Nihal C. [2 ]
Brune, David E. [3 ]
Ke, Pu Chun [1 ,4 ]
机构
[1] Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA
[2] Clemson Univ, Dept Hort, Clemson, SC 29634 USA
[3] Clemson Univ, Dept Agr & Biol Engn, Clemson, SC 29634 USA
[4] Clemson Univ, Ctr Opt Mat Sci & Engn, Clemson, SC 29634 USA
基金
美国国家科学基金会;
关键词
NANOPARTICLES; TOXICITY;
D O I
10.1021/jp904343s
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
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 CO2 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.
引用
收藏
页码:10962 / 10966
页数:5
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