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. 2020 Sep 18;13(18):4152. doi: 10.3390/ma13184152

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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SEM images of the cross-sectional view of ALG (left column) and PVA (right column) membranes filled with 15 wt% of hematite, magnetite or iron(III) acetylacetonate, respectively. Samples were coated with 5 nm layer of Au. Magnification and acceleration voltage: 10,000× and 5 kV (ALG), and 5000× and 10 kV (PVA). (a) plain ALG; (b) plain PVA; (c) ALG_Fe₂O₃; (d) PVA_Fe₂O₃; (e) ALG_Fe₃O₄; (f) PVA_Fe₃O₄; (g) ALG_Fe(acac)₃ and (h) PVA_Fe(acac)_3.

SEM images of the cross-sectional view of ALG (left column) and PVA (right column) membranes filled with 15 wt% of hematite, magnetite or iron(III) acetylacetonate, respectively. Samples were coated with 5 nm layer of Au. Magnification and acceleration voltage: 10,000× and 5 kV (ALG), and 5000× and 10 kV (PVA). (a) plain ALG; (b) plain PVA; (c) ALG_Fe₂O₃; (d) PVA_Fe₂O₃; (e) ALG_Fe₃O₄; (f) PVA_Fe₃O₄; (g) ALG_Fe(acac)₃ and (h) PVA_Fe(acac)_3.