Preparation and Properties of Iron Oxide Doped Mesoporous Silica Systems

Кондрашова, Н. Б.; Shamsutdinov, Artem Sh.; Батуева, Т. Д.; Вальцифер, В. А.; Стрельников, В. Н.; Упоров, С. А.

doi:10.1007/s10904-019-01370-2

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…What is interesting is that the SiO2FexOy material, even if it indicates a relatively small specific surface area, has a very large total pore volume, namely 1.55 cm 3 /g. The data from the literature show that the pore volume obtained is high, unlike other similar studies [27,28], which may lead us Analysing the data obtained and correlating with the IUPAC references [26], we notice that the analysed material has a specific behaviour to the type IVa isotherm. This type of isotherm has H3-type hysteresis.…”

Section: N2 Sorption Analysismentioning

confidence: 57%

“…What is interesting is that the SiO 2 Fe x O y material, even if it indicates a relatively small specific surface area, has a very large total pore volume, namely 1.55 cm 3 /g. The data from the literature show that the pore volume obtained is high, unlike other similar studies [27,28], which may lead us to expect good results in terms of vanadium recovery by adsorption on the synthesized material.…”

Section: N2 Sorption Analysismentioning

confidence: 58%

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Vanadium (V) Adsorption from Aqueous Solutions Using Xerogel on the Basis of Silica and Iron Oxide Matrix

et al. 2022

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Vanadium is considered a strategic metal with wide applications in various industries due to its unique chemical and physical properties. On the basis of these considerations, the recovery of vanadium (V) is mandatory because of the lack of raw materials. Various methods are used to recover vanadium (V) from used aqueous solutions. This study develops a clean and effective process for the recovery of vanadium (V) by using the adsorption method. At the same time, this study synthesizes a material starting from silica matrices and iron oxides, which is used as an adsorbent material. To show the phase composition, the obtained material is characterized by X-ray diffraction showing that the material is present in the amorphous phase, with a crystal size of 20 nm. However, the morphological texture of the material is determined by the N2 adsorption–desorption method, proving that the adsorbent material has a high surface area of 305 m2/g with a total pore volume of 1.55 cm3/g. To determine the efficiency of the SiO2FexOy material for the recovery of vanadium through the adsorption process, the role of specific parameters, such as the L-to-V ratio, pH, contact time, temperature, and initial vanadium concentration, must be evaluated. The adsorption process mechanism was established through kinetic, thermodynamic, and equilibrium studies. In our case, the process is physical, endothermic, spontaneous, and takes place at the interface of SiO2FexOy with V2O5. Following equilibrium studies, the maximum adsorption capacity of the SiO2FexOy material was 58.8 mg (V)/g of material.

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Section: N2 Sorption Analysismentioning

confidence: 57%

“…What is interesting is that the SiO 2 Fe x O y material, even if it indicates a relatively small specific surface area, has a very large total pore volume, namely 1.55 cm 3 /g. The data from the literature show that the pore volume obtained is high, unlike other similar studies [27,28], which may lead us to expect good results in terms of vanadium recovery by adsorption on the synthesized material.…”

Section: N2 Sorption Analysismentioning

confidence: 58%