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Materials 2017, 10(5), 541; doi:10.3390/ma10050541

Immobilization of TiO2 Nanoparticles on Chlorella pyrenoidosa Cells for Enhanced Visible-Light-Driven Photocatalysis

1
College of Life Science and Technology, Hebei Normal University of Science & Technology, Qinhuangdao 066600, China
2
College of Chemistry and Material Sciences, Hebei Normal University, Shijiazhuang 050016, China
*
Author to whom correspondence should be addressed.
Academic Editor: Walid A. Daoud
Received: 22 March 2017 / Revised: 4 May 2017 / Accepted: 9 May 2017 / Published: 17 May 2017
(This article belongs to the Special Issue Enhancing the Photocatalytic Activity of TiO2 Photocatalysts)
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Abstract

TiO2 nanoparticles are immobilized on chlorella cells using the hydrothermal method. The morphology, structure, and the visible-light-driven photocatalytic activity of the prepared chlorella/TiO2 composite are investigated by various methods. The chlorella/TiO2 composite is found to exhibit larger average sizes and higher visible-light intensities. The sensitization of the photosynthesis pigment originating from chlorella cells provides the anatase TiO2 with higher photocatalytic activities under the visible-light irradiation. The latter is linked to the highly efficient charge separation of the electron/hole pairs. The results also suggest that the photocatalytic activity of the composite remains substantial after four cycles, suggesting a good stability. View Full-Text
Keywords: TiO2; visible light; photocatalysis TiO2; visible light; photocatalysis
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Cai, A.; Guo, A.; Ma, Z. Immobilization of TiO2 Nanoparticles on Chlorella pyrenoidosa Cells for Enhanced Visible-Light-Driven Photocatalysis. Materials 2017, 10, 541.

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