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Электронный каталог: Kurbonov, S. - Ordered Mesoporous Silica Prepared with Biodegradable Gemini Surfactants as Templates for Environ...
Kurbonov, S. - Ordered Mesoporous Silica Prepared with Biodegradable Gemini Surfactants as Templates for Environ...
Статья
Автор: Kurbonov, S.
Materials: Ordered Mesoporous Silica Prepared with Biodegradable Gemini Surfactants as Templates for Environ...
б.г.
ISBN отсутствует
Автор: Kurbonov, S.
Materials: Ordered Mesoporous Silica Prepared with Biodegradable Gemini Surfactants as Templates for Environ...
б.г.
ISBN отсутствует
На полку
Статья
Kurbonov, S.
Ordered Mesoporous Silica Prepared with Biodegradable Gemini Surfactants as Templates for Environmental Applications / S.Kurbonov, M.V.Avdeev, [a.o.]. – Text : electronic // Materials. – 2025. – Vol. 18, No. 4. – P. 773. – URL: https://doi.org/10.3390/ma18040773. – Bibliogr.: 47.
Mesoporous silica sieves have been prepared through sol–gel synthesis using diester gemini surfactants as pore templates, aiming to obtain new materials with potential use for water remediation. A series of mesoporous spherical silica particles of submicron size have been prepared in an alkali-catalyzed reaction, using a tetraethyl orthosilicate precursor and bis-quaternary ammonium gemini surfactants with diester spacers of varied lengths as pore-forming agents. The effect of the spacer length on the particle morphology was studied using nitrogen porosimetry, small-angle X-ray scattering (SAXS), ultra-small-angle neutron scattering, scanning, and transmission electron microscopy (SEM, TEM). The results revealed that for all spacer lengths, a long-range hexagonal pore ordering developed in the materials. The silica particles were nearly spherical, with sizes below 1 micrometer, and a weak dependence of the mean particle size on the spacer length could be observed. The template removal procedure had a strong influence on the porosity: calcination caused a moderate shrinkage of the pores while retaining the hexagonal structure, whereas treatment with acidified ethanol resulted in only partial removal of the surfactants; however, the hexagonal structure was severely destroyed. The applicability of the obtained calcined materials as adsorbents for heavy metal ions from water was studied with the example of Pb(II). A high sorption capacity of 110 mg/g was obtained in batch experiments, at pH 5 and 4 h contact time.
ОИЯИ = ОИЯИ (JINR)2025
Спец.(статьи,препринты) = С 342 г1 - Замедление и диффузия нейтронов. Дифракция
Спец.(статьи,препринты) = С 332.8 - Синхротронное излучение. Лазеры на свободных электронах. Получение и использование рентгеновских лучей
Спец.(статьи,препринты) = С 33 а - Нанофизика. Нанотехнология$
Бюллетени = 14/025
Kurbonov, S.
Ordered Mesoporous Silica Prepared with Biodegradable Gemini Surfactants as Templates for Environmental Applications / S.Kurbonov, M.V.Avdeev, [a.o.]. – Text : electronic // Materials. – 2025. – Vol. 18, No. 4. – P. 773. – URL: https://doi.org/10.3390/ma18040773. – Bibliogr.: 47.
Mesoporous silica sieves have been prepared through sol–gel synthesis using diester gemini surfactants as pore templates, aiming to obtain new materials with potential use for water remediation. A series of mesoporous spherical silica particles of submicron size have been prepared in an alkali-catalyzed reaction, using a tetraethyl orthosilicate precursor and bis-quaternary ammonium gemini surfactants with diester spacers of varied lengths as pore-forming agents. The effect of the spacer length on the particle morphology was studied using nitrogen porosimetry, small-angle X-ray scattering (SAXS), ultra-small-angle neutron scattering, scanning, and transmission electron microscopy (SEM, TEM). The results revealed that for all spacer lengths, a long-range hexagonal pore ordering developed in the materials. The silica particles were nearly spherical, with sizes below 1 micrometer, and a weak dependence of the mean particle size on the spacer length could be observed. The template removal procedure had a strong influence on the porosity: calcination caused a moderate shrinkage of the pores while retaining the hexagonal structure, whereas treatment with acidified ethanol resulted in only partial removal of the surfactants; however, the hexagonal structure was severely destroyed. The applicability of the obtained calcined materials as adsorbents for heavy metal ions from water was studied with the example of Pb(II). A high sorption capacity of 110 mg/g was obtained in batch experiments, at pH 5 and 4 h contact time.
ОИЯИ = ОИЯИ (JINR)2025
Спец.(статьи,препринты) = С 342 г1 - Замедление и диффузия нейтронов. Дифракция
Спец.(статьи,препринты) = С 332.8 - Синхротронное излучение. Лазеры на свободных электронах. Получение и использование рентгеновских лучей
Спец.(статьи,препринты) = С 33 а - Нанофизика. Нанотехнология$
Бюллетени = 14/025
