Cytotoxicity of NiO nanoparticles and its conversion inside Chlorella vulgaris

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

3 Scopus Citations
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Author(s)

  • Yongqing Li
  • Ran Xiao
  • Zonglai Liu
  • Xiujuan Liang
  • Wei Feng

Detail(s)

Original languageEnglish
Pages (from-to)107-111
Journal / PublicationChemical Research in Chinese Universities
Volume33
Issue number1
Publication statusPublished - 1 Feb 2017

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; Liang, Xiujuan; Feng, Wei.

In: Chemical Research in Chinese Universities, Vol. 33, No. 1, 01.02.2017, p. 107-111.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal