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

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 am...

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Published inMaterials Vol. 8; no. 12; pp. 8624 - 8629
Main Authors Hashimoto, Tadanori, Murayama, Fumiya, Nakao, Masashi, Nasu, Hiroyuki, Ishihara, Atsushi, Nishio, Yuji
Format Journal Article
LanguageEnglish
Published Switzerland MDPI 10.12.2015
MDPI AG
Subjects
Communication
Fe2O3-Bi2O3-B2O3 glasses
hydrophobicity
pH electrodes
Fe2O3-Bi2O3-B2O3 glasses
hydrophobicity
pH electrodes
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Summary: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.
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These authors contributed equally to this work.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma8125480