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Open AccessFeature PaperArticle

Water Vapor Adsorption by Some Manganese Oxide Forms

Faculty of Chemistry, Odessa I.I. Mechnikov National University, 2, Dvoryanska St., 65082 Odessa, Ukraine
Author to whom correspondence should be addressed.
Colloids Interfaces 2018, 2(4), 61;
Received: 19 October 2018 / Revised: 12 November 2018 / Accepted: 14 November 2018 / Published: 15 November 2018
Manganese oxide forms prepared by different methods differ by their compositions, phase ratios in polyphase samples, and crystallite sizes (XRD and TEM characterization). Among the phases, tunnel-structured β-MnO2 (pyrolusite), α-MnO2 (cryptomelane), ε-MnO2 (akhtenskite), and β-Mn2O3 (bixbyite) have been identified. Water vapor sorption isotherms showed substantial differences in the affinities of water molecules to oxide surfaces of the manganese oxide forms under study. The parameters of the BET equation and pore size distribution curves have been calculated. The manganese oxide forms have mesoporous structures characterized by uniform and non-uniform pore sizes as well as by moderate hydrophilic behavior. View Full-Text
Keywords: adsorption; water vapor; manganese oxide forms adsorption; water vapor; manganese oxide forms
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MDPI and ACS Style

Rakitskaya, T.; Truba, A.; Dzhyga, G.; Nagaevs’ka, A.; Volkova, V. Water Vapor Adsorption by Some Manganese Oxide Forms. Colloids Interfaces 2018, 2, 61.

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