Preparation Of Anti-degradation Bacterial Cellulose Composite Membrane Used For Fuel Cell

The bacterial cellulose membrane is a renewable and environmental friendly biomaterial, it shows many advantages such as strong mechanical property, good chemical stability and low price. Due to these properties BC membrane has also been used as food, optical materials, membraneous material and biomedical material. The platinum(Pt) and cerium oxide(CeO2) nanoparticles catalysts were doped on bacterial cellulose membranes(BCM) by wet chemical method.CeO2 was treated on BC by hydro-thermal method. Hexachloroplatinic acid was used to produce Pt reduced by sodium borohydride. The cerium oxide/platinum-bacterial cellulose membranes(CeO2/Pt-BCM) with different amount of Pt were synthesized. The present of these particles was confirmed by XPS(X-ray photoelectron spectrometer). The morphologies were characterized by using TEM (transmission electron microscopy), EDS (energy dispersive spectroscopy),and XRD (X-ray diffractometry). The spherical hybrid nanoparticles with mean diameter of 30nm well embed in BCM was confirmed by TEM and XRD. It was found that the homemade membranes have profound prospect to catalytic decompose hydrogen peroxide(H2O2). The capacity of H2O2 decomposition was tested by UV-Vis. These experiments show that it is a feasible way to mitigate polymer electrolyte membrane (PEM) degradation caused by free-radical. However, free radical still attack the membrane. When Pt nanoparticle adopt on the membranes, membrane durability has been enhanced.