Structure and morphological properties of clinoptilolite modified by manganese dioxide

The chemical composition and morphological properties of сlinoptilolite-bearing materials modified by MnО2 have been studied using modern physical methods. Scanning electron microscopy, X-ray spectral microanalysis and optical reflection microscopy were applied. It was experimentally shown that MnО2...

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Bibliographic Details
Published in:St. Petersburg Polytechnical University Journal. Physics and Mathematics 2017-03, Vol.3 (1), p.63-70
Main Authors: Korablev, Vadim V., Chechevichkin, Aleksey V., Boricheva, Irina K., Samonin, Vyacheslav V.
Format: Article
Language:English
Subjects:
Clinoptilolite
MnО2-modification
Nanorod
Scanning electron microscopy
X-ray spectral microanalysis
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Summary:The chemical composition and morphological properties of сlinoptilolite-bearing materials modified by MnО2 have been studied using modern physical methods. Scanning electron microscopy, X-ray spectral microanalysis and optical reflection microscopy were applied. It was experimentally shown that MnО2-modified samples with high and low Si/Al ratios differed in such parameters as the layer thickness, the surface concentration, the degree of particle-surface dealumination, and also in morphological peculiarities of the MnО2-phase. This phase in the samples with high Si/Al ratios exhibited the structure formed by nanorods of 10–20nm in diameter and 500–700nm in length. These nanorods are intermeshed in the net which is cross-linked with the surface of clinoptilolite particles. The MnО2-modification of the samples was established to result in improving their mechanical and chemical strength as compared with the initial forms.
ISSN:2405-7223
2405-7223
DOI:10.1016/j.spjpm.2017.03.001