Porous zinc oxide films: Controlled synthesis, cytotoxicity and photocatalytic activity

► Controllable fabrication of series of film-form ZnO photocatalytists was studied. ► ZnO-based materials inhibited the cell proliferation and spread. ► Photocatalytic activity of ZnO-based materials was pore density-dependent. ► The film-form structures hold promise for realize reliable photocataly...

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Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2011-12, Vol.178, p.8-14
Main Authors: Wang, Hua-Jie, Sun, Yuan-Yuan, Cao, Ying, Yu, Xue-Hong, Ji, Xiao-Min, Yang, Lin
Format: Article
Language:English
Subjects:
adverse effects
Anodic oxidation technique
Anodizing
Applied sciences
Catalysis
Catalytic reactions
Chemical engineering
Chemistry
Cytotoxicity
Density
energy
Exact sciences and technology
Fibroblasts
General and physical chemistry
metabolism
methyl orange
oxidation
Photocatalysis
Photocatalyst
Porosity
Porous zinc oxide
Reactors
scanning electron microscopes
Scanning electron microscopy
Spreads
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Thin films
X-radiation
Zinc oxide
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Summary:► Controllable fabrication of series of film-form ZnO photocatalytists was studied. ► ZnO-based materials inhibited the cell proliferation and spread. ► Photocatalytic activity of ZnO-based materials was pore density-dependent. ► The film-form structures hold promise for realize reliable photocatalytists. The anodic oxidation technique was successfully carried out to fabricate porous ZnO films. Energy dispersive X-ray and scanning electron microscope indicated that the anodic oxidation time was the key factor to control surface pore density, which varied from 0.2 ± 0.01% to 59.8 ± 5.4%. The cytotoxicity study indicated that porous ZnO films displayed the pore density-dependent cytotoxicity on the metabolism and spread of NIH 3T3 fibroblasts. The photocatalytic activity of porous ZnO films was investigated by employing methyl orange as the model compound and it was pore density-dependent. In view of the relatively facile separation property and subsequently the decrease of toxic side effects to the environment of film-form ZnO products compared to powder products, this study suggested the superior potential of the former as the photocatalyst.
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2011.09.088