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.com
Volume 5, Issue 6 (Suppl)
J Mat. Sci.
ISSN: 2321-6212
Advanced Materials 2017
October 26-28, 2017
OCTOBER 26-28, 2017 OSAKA, JAPAN
13
TH
INTERNATIONAL CONFERENCE ON
Advanced Materials and Nanotechnology
Effect of copper-core carbon-shell nanoparticles on the growth of cyanobacterium
Microcystis
aeruginosa
and its mechanism
Chao Li
1
, Xiao Zhang
1
, Xiong Wang
1
, Manli Li
1
, Fengying Li
1
and Kun Lian
1, 2
1
Xi’an Jiaotong University, China
2
Suzhou GuanJie Nano Antibacterial Coating Technology Co., Ltd., China
I
n recent years, frequent occurrence of cyanobacteria bloom has disrupted the balance of lakes and reservoirs around
the world. Copper-Core Carbon-Shell Nanoparticles (CCCSNPs), as a novel material, have showed a good antibacterial
and anti-mildew performance in previous study. In this study, we tried to demonstrate the potential effect of CCCSNPs on
cyanobacterium
Microcystis aeruginosa
growth and clarify the mechanism to know the application prospects of the material
in controlling cyanobacteria bloom. Compared with the widely used algaecides CuSO
4
, CCCSNPs significantly reduced
chlorophyll a content of M aeruginosa when the concentration of Cu
2+
in the medium was the same as the CuSO
4
, so the
inhibitory effect of CCCSNPs on algae was better and lasted longer than that of CuSO4. We further explored the mechanism of
inhibitory effect, finding that intracellular excess Reactive Oxygen Species (ROS) were produced after exposure to CCCSNPs,
which were 2.4 and 1.5-fold higher than the control and the CuSO
4
treatment, respectively. Excess ROS formation caused
oxidative damage to algae and reduced the photosynthetic efficiency, which further inhibited algal growth. Therefore, it is
reasonable to propose that CCCSNPs could induce excess ROS production and further interfere with algal photosynthesis to
achieve a satisfactory effect with a longer action time.
Biography
Chao Li has obtained his Bachelor’s degree in Medicine in China and completed his PhD in Biomedicine from Hull University in 2007 where he was mainly engaged
in tumor immunology and nanotechnology used for antitumor drugs research. As a Postdoctoral Fellow, he focused on medical nanomaterials at Centre for Nano-
health of Swansea University from 2007 to 2009 and published over 10 research papers in SCI journals.
cli12@mail.xjtu.edu.cnChao Li et al., J Mat. Sci. 2017, 5:6
DOI: 10.4172/2321-6212-C1-008