Novel porous glass with chemical resistance and good shaping ability prepared from borosilicate glass containing ZnO

Yazawa, Tetsuo; Tanaka, Hiroshi; Eguchi, Kiyohisa; Yokoyama, Shigeru; Arai, Takashi

doi:10.1007/bf01910071

Cited by 14 publications

(7 citation statements)

References 4 publications

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“…This results in a highly porous glass. On the basis of this spinodal phase separation, the porous glasses with highly connective micropore, meso-pore, and macro-pore, which are promising materials for separation membranes, enzyme and catalyst supports, photonic materials, and so forth − can be obtained.…”

Section: Introductionmentioning

confidence: 99%

Effect of Additive ZrO₂ on Spinodal Phase Separation and Pore Distribution of Borosilicate Glasses

Kuraoka

Akai

et al. 2001

J. Phys. Chem. B

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Sodium borosilicate porous glasses arising from spinodal phase separation are promising functional materials for separation membranes, enzyme and catalyst supports, and photonic materials. The present paper studied the effect of the additive of ZrO 2 on the spinodal phase separation and pore distribution of the sodium borosilicate glasses using 11 B nuclear magnetic resonance spectrum, 29 Si nuclear magnetic resonance spectrum, mercury measurement, and nitrogen adsorption techniques. The experimental results showed that ZrO 2 inhibited both the initiation process in early stage and the coarsening process in later stage of the spinodal phase separation. The pore volume was found to decrease slightly with the addition of ZrO 2 at the beginning. However, when ZrO 2 content > 7 mass%, the pore volume decreases dramatically with further addition of ZrO 2 . 65% of the pore volume in the sample without addition of ZrO 2 will be lost when the addition amount of ZrO 2 increases from 0 to 10 mass%. The inhibition effect on the pore volume is due to the structural change of boron network by the introduction of ZrO 2 . The oxygen defects, such as oxygen vacancy, which initiates the spinodal phase separation, are reduced during the transformation process from four-coordinated boron to three-coordinated boron by the introduction of ZrO 2 . The growth of the pore size of the sample, which is controlled by the dynamic process of coarsening in the later stage of the spinodal phase separation, is also inhibited by the introduction of ZrO 2 . With the addition of zirconia, the three-coordinated boron with stronger bond energy increases. This may reduce the movement of the oxygen-contained boron groups during mass transfer of the coarsening process of the spinodal phase separation, and consequently inhibit the growth of the pore size.

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Section: Introductionmentioning

confidence: 99%

Effect of Additive ZrO₂ on Spinodal Phase Separation and Pore Distribution of Borosilicate Glasses

Kuraoka

Akai

et al. 2001

J. Phys. Chem. B

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“…4) On the other hand, addition of CaO or ZnO promotes phase separation, which is suitable for the preparation of porous materials. 5) Phase separated bulk materials have also been reported in other glass ceramics comprising amorphous and crystalline glass regions. 6),7) After phase separation, a porous or microstructured bulk material can be prepared using variations in the chemical stability of the material.…”

Section: Introductionmentioning

confidence: 94%

Fabrication of Sr0.5Ba0.5Nb2O6-precipitated microstructured ceramics for photocatalytic application

Yoshida

Masai

Takahashi

et al. 2011

J. Ceram. Soc. Japan

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We have succeeded in preparing Sr 0.5 Ba 0.5 Nb 2 O 6 (SBN50)-precipitated ceramics by acid etching via a glass-ceramic process using SrOBaONb 2 O 5 B 2 O 3 ZnOSiO 2 glasses. Although the mother glass has good resistance to acid etching, the phase separated glass-ceramic obtained by crystallization was easily etched. This phase separation process was favorable for removing the amorphous B 2 O 3 ZnO phase and a superfluous crystalline phase. Addition of SiO 2 , substituted for B 2 O 3 , was effective for maintaining the bulk structure of the SBN50-etched ceramic because of its ability to form a strong and chemically stable network. We have found that the SBN50-precipitated ceramic demonstrates photocatalytic activity, which is the first report on the activity of SBN50.

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“…Compared to organic hollow fibre membrane, inorganic membrane exhibits various kinds of excellent properties, which include stability in organic solvent, 1 durability at high temperature, 2,3 resistance to compaction under high pressure 4 and easy shaping ability. 5 Owing to the chemical, thermal and mechanical stabilities, the inorganic hollow fibre membrane is mainly used as desalination membrane, 6 mixed gas separation membrane, [7][8][9] catalyst support 10 and enzyme immobilisation matrix. 11 Conventionally, there are three kinds of inorganic hollow fibre membranes: ceramic membrane, 12,13 glass membrane 14 and carbon membrane.…”

Section: Introductionmentioning

confidence: 99%

Hydrofluoric acid corrosion behaviour of SiO₂glass used to prepare glass hollow fibre membrane

Zhang¹,

Xiao²,

An³

et al. 2012

Corrosion Engineering, Science and Technology

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This paper describes the corrosion behaviour of SiO 2 glass hollow fibres by hydrofluoric acid (HF). The decrease of corrosion rate after 6 h etching could be explained by the change of surface area and concentration of the HF solution. The small and positive DS implies that the decrease in disordering takes place due to the transformation of the amorphous glass phase to SiF 4 and Na 2 SiF 6 . The results show that many pit typed corrosion masks showed on the surface of the glass hollow fibres. The microflaws and defects lead to the formation of pits on the glass surface.

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Novel porous glass with chemical resistance and good shaping ability prepared from borosilicate glass containing ZnO

Cited by 14 publications

References 4 publications

Effect of Additive ZrO₂ on Spinodal Phase Separation and Pore Distribution of Borosilicate Glasses

Effect of Additive ZrO₂ on Spinodal Phase Separation and Pore Distribution of Borosilicate Glasses

Fabrication of Sr0.5Ba0.5Nb2O6-precipitated microstructured ceramics for photocatalytic application

Hydrofluoric acid corrosion behaviour of SiO₂glass used to prepare glass hollow fibre membrane

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Novel porous glass with chemical resistance and good shaping ability prepared from borosilicate glass containing ZnO

Cited by 14 publications

References 4 publications

Effect of Additive ZrO2 on Spinodal Phase Separation and Pore Distribution of Borosilicate Glasses

Effect of Additive ZrO2 on Spinodal Phase Separation and Pore Distribution of Borosilicate Glasses

Fabrication of Sr0.5Ba0.5Nb2O6-precipitated microstructured ceramics for photocatalytic application

Hydrofluoric acid corrosion behaviour of SiO2glass used to prepare glass hollow fibre membrane

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Effect of Additive ZrO₂ on Spinodal Phase Separation and Pore Distribution of Borosilicate Glasses

Effect of Additive ZrO₂ on Spinodal Phase Separation and Pore Distribution of Borosilicate Glasses

Hydrofluoric acid corrosion behaviour of SiO₂glass used to prepare glass hollow fibre membrane