Filter paper derived cross-linked interconnected BaBiCoFeO morphology with an enhanced oxygen permeation property

• Published in: RSC advances 2015-12, Vol.6 (2), p.882-89
• Main Authors: Islam, Quazi Arif, Raja, Mir Wasim, Bysakh, Sandip, Basu, Rajendra Nath
• Format: Article
• ISSN: 2046-2069
• DOI: 10.1039/c5ra16227k

This study aims to investigate the effect of an engineered microstructure on the oxygen permeation property of a BaBi 0.2 Co 0.35 Fe 0.45 O 3− δ (BBCF) type perovskite membrane. The interconnected multi-level cross-linked structure of the BBCF membrane has been synthesized by mimicking a common laboratory grade filter paper. The controlled calcination of the cellulose matrix results in a single phase BBCF structure when calcined at 950 °C in air. The average diameter of the interconnected BBCF fiber is about 1 μm as confirmed by FESEM. The electrical conductivity is measured to be ∼20 S cm −1 at 800 °C, higher than that of other conventionally prepared BBCF based membranes. The perovskite membrane derived by exo-templating of the filter paper's cellulose fiber reveals an enhanced oxygen permeation flux of 0.98 ml min −1 cm −2 at 900 °C. Membrane synthesized by filter paper templating method shows higher oxygen permeation flux than similar type membranes developed by conventional methodologies.