Interlayer-free microporous cobalt oxide silica membranes via silica seeding sol-gel technique
Liang Liu, David K Wang, Dana L Martens, Simon Smart, Joao C Diniz da Costa
JOURNAL OF MEMBRANE SCIENCE | ELSEVIER SCIENCE BV | Published : 2015
This work shows for the first time that interlayer-free cobalt oxide silica membranes can be produced via a novel silica sol-gel seeding process. The silica seed, synthesized from the StÖber process, had an average particle size of 70nm, which is incorporated into the polymeric cobalt silica sol with a particle size of less than 1nm. Calcined cobalt oxide silica xerogels were microporous and had similar average pore sizes when the seeding ratio is less than 0.4, although the calcined silica seed itself was mesoporous. The microporous structure of the seeded cobalt oxide silica matrices was maintained by the penetration of the polymeric sol into the silica seeds at low seed ratios and effecti..View full abstract
Awarded by Australian Research Council (ARC) Future Fellowship Program
L. Liu would like to acknowledge the scholarship from The University of Queensland and CO2CRC - Cooperative Research Centre for Greenhouse Gas Technologies. The authors would like to acknowledge financial support provided by the Australian Government through its CRC programme to support this CO2CRC research project. The authors acknowledge the assistance of Dr. Julius Motuzas and the facilities, and the scientific and technical assistance, of the Australian Microscopy & Microanalysis Research Facility at the Centre for Microscopy and Microanalysis, the University of Queensland. J. C. Diniz da Costa acknowledges the financial support given by the Australian Research Council (ARC) Future Fellowship Program (FT130100405).