Authors:T. Braun, H. Rausch, L. Bíró, Z. Konya, and I. Kiricsi
By using instrumental neutron activation analysis (INAA) it has been shown that some pristine carbon SWNT's and MWNT's of
different makes, contain a multitude of trace element impurities at various concentration levels including also amounts which
can be considered as nanoelectronically dopant quantities. The same holds for the above mentioned carbon nanotubes also after
their inadequately so-called purification.
Authors:A. Béres, I. Pálinkó, Á. Fudala, I. Kiricsi, Y. Kiyozumi, F. Mizukami, and J. Nagy
Mg-Al L(ayered) D(ouble) H(ydroxide) was prepared and its thermal behaviour was characterized by thermoanalytical methods
(TG, DTG, DTA), 27Al M(agic) A(ngle) S(pinning) NMR spectroscopy, X-ray diffractometry (XRD) and S(canning) E(lectron) M(icroscopy). Heat treatment
destroyed the layered structure, which could only be partially reconstituted by rehydration. On calcination mixed oxide with
the predominance of basic sites were formed. Pillaring the LDH with Fe(CN)64- anions was also performed. The material was characterized by XRD and BET measurements. Heat stability of the pillared substance
was investigated, too. Pillaring proved to be successful, however, decreased heat resistance was found in the intercalated
material relative to the guest LDH.