Towards Iron-Titanium Oxide Nanostructures from Ecuadorian Black Mineral Sands

نویسندگان

چکیده

Ecuadorian black mineral sands were used as starting material for the production of iron-titanium oxide nanostructures. For this purpose, two types processing carried out, one incorporating a pre-treatment before conducting an alkaline hydrothermal synthesis (NaOH 10 M at 180 °C 72 h), and other prescinding first step. Nanosheet-assembled flowers nanoparticle agglomerates obtained from procedure including pre-treatment. Conversely, nanobelts plate-like particles prepared by single route. The nanoscale features product morphologies observed scanning electron microscopy (SEM) transmission (TEM) analyses. ilmenite hematite molar fractions, within ilmenite-hematite solid solution, in as-synthetized samples estimated Brown’s approach using computed values unit-cell volumes Le Bail adjustments X-ray powder diffraction (XRPD) patterns. resulting materials mainly composed Fe-rich solutions (hematite contents ≥0.6). Secondary phases, which possibly belong to lepidocrocite-like or corrugated titanate structures, also identified. current study demonstrated feasibility employing resources low-cost precursors synthesize high-added-value nanostructures with promising applications several fields.

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ژورنال

عنوان ژورنال: Minerals

سال: 2021

ISSN: ['2075-163X']

DOI: https://doi.org/10.3390/min11020122