Article ID Journal Published Year Pages File Type
8147431 St. Petersburg Polytechnical University Journal: Physics and Mathematics 2017 8 Pages PDF
Abstract
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 10-20 nm in diameter and 500-700 nm 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.
Related Topics
Physical Sciences and Engineering Physics and Astronomy Atomic and Molecular Physics, and Optics
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