Bio-Inspired Hydro-Pressure Consolidation of Silica

J 2018

Bio-Inspired Hydro-Pressure Consolidation of Silica

TAVERI, Gianmarco, Salvatore GRASSO, Francesco GUCCI, Jaromír TOUŠEK, Ivo DLOUHÝ et. al.

Základní údaje

Originální název

Bio-Inspired Hydro-Pressure Consolidation of Silica

Název česky

Tlakové zhutňování silikagelu

Autoři

TAVERI, Gianmarco (203 Česká republika, garant), Salvatore GRASSO (156 Čína), Francesco GUCCI (826 Velká Británie a Severní Irsko), Jaromír TOUŠEK (203 Česká republika, domácí) a Ivo DLOUHÝ (203 Česká republika)

Vydání

Advanced Functional Materials, Wrinheim, Wiley-VCH Verlag, 2018, 1616-301X

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10302 Condensed matter physics

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 15.621

Kód RIV

RIV/00216224:14740/18:00104950

Organizační jednotka

Středoevropský technologický institut

DOI

http://dx.doi.org/10.1002/adfm.201805794

UT WoS

000451118800018

Klíčová slova česky

biosilifikaceů hydrostatický tlak; polykondenzace

Klíčová slova anglicky

biosilicification; hydrostatic pressure; Ostwald ripening; polycondensation; silica

Štítky

CF NMR, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 13. 3. 2019 12:53, Mgr. Pavla Foltynová, Ph.D.

Anotace

ORIG CZ

V originále

Room-temperature hydro-pressure-driven densification of amorphous silica (nanoparticles and microbeads) is developed. This technique is inspired by biological silicification with reference to dissolution, precipitation, and hardening mechanisms. Cold sintering based on uniaxial pressure is taken as a benchmark. Starting from a green-body relative density of 70%, densification exceeding 99% is achieved by adding distilled water or caustic solution to an amorphous powder under a hydrostatic pressure of 450-600 MPa for 5-30 min. Translucent samples are obtained. Silica microbeads are employed as a model system to define the effect of the sintering parameters: pressure, pH, and soaking time. Densification is attained through a preferential precipitation of a second phase from silica dissolution under hydro-pressure. Precipitation is governed by minimization of the surface energy (Ostwald ripening). Transmission electron microscopy, NMR, thermal gravimetric analysis/differential scanning calorimetry, and Fourier transform infrared spectroscopy reveal the mechanisms of the process and the analogies with biosilicification.

Česky

Bylo studováno lakové zhutňování silikagelu za laboratorní teploty.

Návaznosti

LM2015043, projekt VaV

Název: Česká infrastruktura pro integrativní strukturní biologii (Akronym: CIISB)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Czech Infrastructure for Integrative Structural Biology

Citovat

TAVERI, Gianmarco, Salvatore GRASSO, Francesco GUCCI, Jaromír TOUŠEK a Ivo DLOUHÝ. Bio-Inspired Hydro-Pressure Consolidation of Silica. Advanced Functional Materials. Wrinheim: Wiley-VCH Verlag, 2018, roč. 28, č. 48, s. 1805794-1805801. ISSN 1616-301X. Dostupné z: https://dx.doi.org/10.1002/adfm.201805794.

@article{1479537,
   author = {Taveri, Gianmarco and Grasso, Salvatore and Gucci, Francesco and Toušek, Jaromír and Dlouhý, Ivo},
   article_location = {Wrinheim},
   article_number = {48},
   doi = {http://dx.doi.org/10.1002/adfm.201805794},
   keywords = {biosilicification; hydrostatic pressure; Ostwald ripening; polycondensation; silica},
   language = {eng},
   issn = {1616-301X},
   journal = {Advanced Functional Materials},
   title = {Bio-Inspired Hydro-Pressure Consolidation of Silica},
   url = {https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.201805794},
   volume = {28},
   year = {2018}
}

TY  - JOUR
ID  - 1479537
AU  - Taveri, Gianmarco - Grasso, Salvatore - Gucci, Francesco - Toušek, Jaromír - Dlouhý, Ivo
PY  - 2018
TI  - Bio-Inspired Hydro-Pressure Consolidation of Silica
JF  - Advanced Functional Materials
VL  - 28
IS  - 48
SP  - 1805794
EP  - 1805794
PB  - Wiley-VCH Verlag
SN  - 1616301X
KW  - biosilicification
KW  - hydrostatic pressure
KW  - Ostwald ripening
KW  - polycondensation
KW  - silica
UR  - https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.201805794
N2  - Room-temperature hydro-pressure-driven densification of amorphous silica (nanoparticles and microbeads) is developed. This technique is inspired by biological silicification with reference to dissolution, precipitation, and hardening mechanisms. Cold sintering based on uniaxial pressure is taken as a benchmark. Starting from a green-body relative density of 70%, densification exceeding 99% is achieved by adding distilled water or caustic solution to an amorphous powder under a hydrostatic pressure of 450-600 MPa for 5-30 min. Translucent samples are obtained. Silica microbeads are employed as a model system to define the effect of the sintering parameters: pressure, pH, and soaking time. Densification is attained through a preferential precipitation of a second phase from silica dissolution under hydro-pressure. Precipitation is governed by minimization of the surface energy (Ostwald ripening). Transmission electron microscopy, NMR, thermal gravimetric analysis/differential scanning calorimetry, and Fourier transform infrared spectroscopy reveal the mechanisms of the process and the analogies with biosilicification.
ER  -

TAVERI, Gianmarco, Salvatore GRASSO, Francesco GUCCI, Jaromír TOUŠEK a Ivo DLOUHÝ. Bio-Inspired Hydro-Pressure Consolidation of Silica. \textit{Advanced Functional Materials}. Wrinheim: Wiley-VCH Verlag, 2018, roč.~28, č.~48, s.~1805794-1805801. ISSN~1616-301X. Dostupné z: https://dx.doi.org/10.1002/adfm.201805794.

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