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Drastic Dependence of the pH Sensitivity of Fe2O3-Bi2O3-B2O3 Hydrophobic Glasses with Composition

Division of Chemistry for Materials, Graduate School of Engineering, Mie University, 1577 Kurimamachiya-Cho, Tsu City, Mie Prefecture 514-8507, Japan
HORIBA, Ltd., 2 Miyanohigasi, Kisshoin, Minami-Ku, Kyoto 601-8510, Japan
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Fernão D. Magalhães
Materials 2015, 8(12), 8624-8629;
Received: 24 November 2015 / Revised: 7 December 2015 / Accepted: 7 December 2015 / Published: 10 December 2015
(This article belongs to the Special Issue Self-Cleaning and Antimicrobial Surfaces)
Fe2O3-Bi2O3-B2O3 (FeBiB) glasses were developed as novel pH responsive hydrophobic glasses. The influence of the glass composition on the pH sensitivity of FeBiB glasses was investigated. The pH sensitivity drastically decreased with decreasing B2O3 content. A moderate amount of Fe2O3 and a small amount of B2O3 respectively produces bulk electronic conduction and a pH response on glass surfaces. Because the remaining components of the glass can be selected freely, this discovery could prove very useful in developing novel pH glass electrodes that are self-cleaning and resist fouling. View Full-Text
Keywords: Fe2O3-Bi2O3-B2O3 glasses; pH electrodes; hydrophobicity Fe2O3-Bi2O3-B2O3 glasses; pH electrodes; hydrophobicity
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Hashimoto, T.; Murayama, F.; Nakao, M.; Nasu, H.; Ishihara, A.; Nishio, Y. Drastic Dependence of the pH Sensitivity of Fe2O3-Bi2O3-B2O3 Hydrophobic Glasses with Composition. Materials 2015, 8, 8624-8629.

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