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Kayıt Tarihi: 2021-13-Ocak
Aktif Durum: Pasif
Gönderilenler: 30
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| Gönderen: 2021-22-Ocak Saat 05:29 | Kayıtlı IP
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Preparation of alumina nanoshell coated porous silica
spheres for inorganic anions separation
alumina/">alumina fusedIt had been reported that
alumina nanoshell coating could be obtained on the
external surface of various substrates in one-nanometer
precision in aqueous solution. In this work, alumina
nanoshell coated mesoporous silica microbeads
(nanoAl2O3/mesoSiO2) were prepared with the similar
method, and were successfully applied to inorganic anions
separation. As the mass transfer speed is largely
constrained in the mesopore compared with that on the
open surface, it was found that a complete alumina
nanoshell coating could be obtained within the mesopore
until the five-time coating was carried out. After
characterization by BET, SEM and FTIR, it was found that
the obtained nanoAl2O3/mesoSiO2 particles are smooth and
well dispersed, and the mesopores are well reserved. In
addition, the full coverage of nanoAl2O3 shell in
mesopores was also confirmed by the binding capacity
experiments with berberine.
visit
hslabrasive.com Finally, the nanoAl2O3/mesoSiO2
particles were packed in silica capillary for the
separation of inorganic anions I−, SCN−, Br−, NO2− and
NO3− with ion chromatography (IC), and a column
efficiency of 3.8 × 104 plates per meter was obtained
for I−.
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Konu: Preparation of alumina nanoshell
