AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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STUDIA CHEMIA - Issue no. 1 / 2004 | |||||||
Article: |
SCANNING ELECTRON MICROSCOPY STUDY OF UNDOPED AND METAL DOPED ANODIC POROUS ALUMINA MEMBRANES. Authors: ZOFIA VÉRTESY, ERZSÉBET VERESS, GHEORGHE MIHĂILESCU, STELA PRUNEANU, LÁSZLÓ P. BIRÓ . |
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Abstract: Porous Al2O3 membranes were prepared by low-temperature anodic oxidation in aqueous electrolyte solution of Al foils with and without thermal pretreatment. Some of membranes were doped with Co and Ni by a.c. electrolysis. Scanning electron microscopy of the membranes confirms the existence of strain field regions, thus providing an experimental evidence of the earlier proposed mechanism for the development of the porous structure. The Co doped membranes were found as being very effective substrates for catalytic growth of carbon nanotubes. | |||||||