Change in Surface Property and Structure of Porous Silica Particles by Hydrothermal Treatments.

Fuji, Masayoshi; Machida, Kotoe; Takei, Takashi; Watanabe, Tohru; Chikazawa, Masatoshi

doi:10.4164/sptj.35.706

Cited by 5 publications

(1 citation statement)

References 8 publications

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“…On the contrary, R-2 and R-3 treatment brought about rehydroxylation with crystallization and changing the surface geometric structure. The consideration is in good agreement with the conclusion of our previous study 27 concerning change in surface property and structure of porous silica particle by hydrothermal treatment.…”

Section: Resultssupporting

confidence: 92%

Effect of Surface Geometric Structure on the Adhesion Force between Silica Particles

Fuji¹,

Machida²,

Takei³

et al. 1998

J. Phys. Chem. B

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The adhesion force between nonporous and porous silica particles was measured by AFM as a function of relative humidity. Various porous samples were prepared by hydrothermal treatments in different conditions. Geometric structure was evaluated by gas adsorption, and the mechanism of rehydroxylation that occurred in hydrothermal treatments was investigated by silanol density, IR spectra, and immersional heat. The adhesion force was measured by AFM, and the result was compared with the geometric structure and the rehydroxylation process. As a result, we proved that capillary condensation occurred in small spaces between two particles contacting each other after water filled the pores and capillary force appeared to contribute to a steep increase of adhesion force. The adhesion force under low relative pressure was attributed to hydrogen bonding force and reflected both the contact area and hydrophilicity of the surface.

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Section: Resultssupporting

confidence: 92%

Effect of Surface Geometric Structure on the Adhesion Force between Silica Particles

Fuji¹,

Machida²,

Takei³

et al. 1998

J. Phys. Chem. B

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View full text Add to dashboard Cite

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Hydrothermal reactions under mechanochemical action

Болдырев

2002

Powder Technology

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粒子表面の機能化

Fuji

2003

Journal of The Surface Science Society of Japan

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A precise surface design of particle, based on the quantitative evaluation between micro physical and macro physical properties on particle surface, is paid to attention in the background of the demand of preparing the high performance material in recent year. In this paper, the knowledge and the method for preparing the particle surface which had aimed physical properties were reviewed. The basic knowledge concerning a real particle surface was introduced at first. Some cases of preparing the functional particle surface by a precise surface design were shown. The positive use of the particle surface such as photo catalysis was also introduced.

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Change in Surface Property and Structure of Porous Silica Particles by Hydrothermal Treatments.

Cited by 5 publications

References 8 publications

Effect of Surface Geometric Structure on the Adhesion Force between Silica Particles

Effect of Surface Geometric Structure on the Adhesion Force between Silica Particles

Hydrothermal reactions under mechanochemical action

粒子表面の機能化

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