Preparation and Properties of BC/PPy/TiO₂ Composite Membrane

Abstract:

Bacterial cellulose (BC) /Polypyrrole (PPy) /TiO₂ composite membrane was successfully prepared by in situ chemical oxidation polymerization of pyrrole in TiO₂ sol into BC membrane matrix with different concentration of TiO₂. The results of the field emission scanning electron microscopy observation revealed that the TiO₂ nanoparticles coated with PPy were well homogeneously dispersed in the BC matrix. The photocatalytic activity of composite membrane was measured by methyl orange reaction model. Furthermore, the chemical structure of composite membrane and the anatase-TiO₂ crystal structure were characterized by FT-IR spectroscopy and XRD analysis, respectively. According to this study, the photocatalytic activity of composite membranes was improved significantly by the addition of TiO₂ due to the synergistic reaction between TiO₂ and PPy. Besides that, the membrane exhibited the striking flexibility and mechanical properties. This study provided a green and facile method to prepare the BC /PPy /TiO₂ composite membrane which would have potential applications in wastewater treatment.

• Periodical: Materials Science Forum (Volume 789)
• Pages: 183-187
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.789.183
• Online since: April 2014
• Authors: Yi Zheng*, Shi Yan Chen, Lian Tang, Wei Li Zheng, Chuan Lu, Hua Ping Wang
• Keywords: Bacterial Cellulose, Multi-Functional Material, Polypyrrole, TiO₂

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