Cytotoxicity of NiO nanoparticles and its conversion inside Chlorella vulgaris
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 107-111 |
Journal / Publication | Chemical Research in Chinese Universities |
Volume | 33 |
Issue number | 1 |
Publication status | Published - 1 Feb 2017 |
Link(s)
Abstract
Cytotoxicity of nickel oxide nanoparticles(NiO NPs) with average diameter of 20 nm were investigated on cultured Chlorella vulgaris. Alga growth-inhibition tests were taken and ultrastructure changes of the microalgae were characterized with transmission electron microscopy(TEM). The biological interface conversion effect between NiO nanoparticles and Chlorella vulgaris were studied by X-ray diffraction(XRD), high-resolution transmission electron microscopy(HRTEM) and X-ray photoelectron spectroscopy(XPS). The results indicated that the NiO nanoparticles had severe inhibitory effect on the growth of microalgae, with a 96 h EC50 value of 31.4 mg/L. Under the exposure to NiO NPs suspensions, Chlorella vulgaris cells showed plasmolysis with a shriveled cell shape, disrupted plasma mem-brane, leaked cytosol and disordered thylakoid grana lamella. The NiO NPs were aggregated and partially reduced to Ni0 inside the Chlorella vulgaris. The bioaccumulation and bio-reduction ability of Chlorella vulgaris provide us with a possible strategy of remediation of aquatic pollution conducted by toxic metal oxide nanoparticles.
Research Area(s)
- Chlorella vulgaris, Conversion, Cytotoxicity, Nanoparticles
Citation Format(s)
Cytotoxicity of NiO nanoparticles and its conversion inside Chlorella vulgaris. / Li, Yongqing; Xiao, Ran; Liu, Zonglai et al.
In: Chemical Research in Chinese Universities, Vol. 33, No. 1, 01.02.2017, p. 107-111.
In: Chemical Research in Chinese Universities, Vol. 33, No. 1, 01.02.2017, p. 107-111.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review