An improved methodology for adsorption characterization of unmodified and modified silica gels

Choma, J.; Kloske, M.; Jaroniec, Mietek

doi:10.1016/s0021-9797(03)00573-3

Cited by 26 publications

(18 citation statements)

References 14 publications

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“…The capillary condensation and evaporation takes place at different relative pressures which leads to the formation of a hysteresis loop on the adsorption-desorption isotherm. Normally, hysteresis due to capillary condensation is not expected to occur in well-structured homogeneous MPS materials since mesopore diameters are much smaller to support a liquid meniscus (Choma et al 2003).…”

Section: Resultsmentioning

confidence: 99%

Effect of synthesis time and treatment on porosity of mesoporous silica materials

et al. 2009

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Section: Resultsmentioning

confidence: 99%

Effect of synthesis time and treatment on porosity of mesoporous silica materials

et al. 2009

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“…N 2 adsorption-desorption isotherm (77 K) is a standard technique employed to characterize the pore structure and network of a material. It is perhaps simple and the most widely used method to determine the specific surface area, pore size and pore size distribution for meso and micro porous adsorbents (Smart, et al 2013;Choma, et al 2003). The gas adsorption isotherm is divided into six categories (Smart, et al 2013;Choma, et al 2003;Weidenthaler, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…It is perhaps simple and the most widely used method to determine the specific surface area, pore size and pore size distribution for meso and micro porous adsorbents (Smart, et al 2013;Choma, et al 2003). The gas adsorption isotherm is divided into six categories (Smart, et al 2013;Choma, et al 2003;Weidenthaler, 2011). Five of the six categories are mentioned in the IUPAC recommendations (Choma, et al 2003).…”

Section: Introductionmentioning

confidence: 99%

“…The gas adsorption isotherm is divided into six categories (Smart, et al 2013;Choma, et al 2003;Weidenthaler, 2011). Five of the six categories are mentioned in the IUPAC recommendations (Choma, et al 2003).…”

Section: Introductionmentioning

confidence: 99%

“…An example of this uncommon isotherm is observed for water adsorption on activated carbon (Weidenthaler, 2011). Type VI isotherm is a highly uniform surface which shows a layer-by-layer adsorption (Smart et al 2013;Choma et al 2003;Weidenthaler, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Characterization of Inorganic Membranes for Hydrocarbon Separation from N2 for Environmental Applications

Kajama¹,

Shehu²,

Okon³

et al. 2015

EER

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This paper reports the preparation and characterization of a tubular alumina and silica membrane for propylene (C 3 H 6 ) and nitrogen (N 2 ) separation. Dip-coating technique was employed to prepare silica membrane. Nitrogen adsorption measurements reveal that this membrane possesses mesostructure with pore diameter of 3.940 nm and BET surface of 0.484 m 2 /g. Scanning electron microscopy (SEM) studies show that the layers are defect free and energy diffraction X-ray analysis (EDXA) confirms the compositional element of silica. Propylene and nitrogen permeation tests also confirmed that the membrane is defect free with C 3 H 6 /N 2 selectivity of 1.79 higher than ideal Knudsen selectivity.

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Photocatalytic efficiency of sol–gel synthesized Mn‐doped TiO₂ nanoparticles for degradation of brilliant green dye and mixture of dyes

Bhosale

Sutar

Deshmukh

et al. 2022

J Chinese Chemical Soc

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The Mn‐doped TiO2 nanoparticle photocatalysts have been prepared by a simple sol–gel method. 1, 3, and 5 mol% Mn‐doped TiO2 nanoparticles have been prepared by using a stoichiometric amount of manganese acetate and titanium isopropoxide as precursors of Mn and Ti respectively. The physico‐chemical characterization of the prepared samples has been studied by x‐ray diffraction (XRD), Brunauer–Emmett–Teller surface area analysis, field emission scanning electron microscope, energy dispersive x‐ray analysis, high‐resolution transmission electron microscopy, x‐ray photoelectron spectroscopy, Ultraviolet–visible spectroscopy, photoluminescence spectroscopy, Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). XRD study reveals the formation of pure anatase phase of TiO2 and decrease in crystalline size of TiO2 on increasing the Mn doping content. TGA reveals minimum weight loss in the high‐temperature region of 500–1,000°C, showing the thermal stability of the catalyst. FTIR study shows highly bonding in metal atoms. These samples have been tested for photocatalytic degradation of brilliant green dye. 5 mol% Mn‐doped TiO2 is having nearly four times more photocatalytic activity than pure TiO2. In addition, Mn‐doped TiO2 has shown excellent photodegradation of a mixture of three dyes namely, rhodamine B, brilliant green, and methylene blue.

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An improved methodology for adsorption characterization of unmodified and modified silica gels

Cited by 26 publications

References 14 publications

Effect of synthesis time and treatment on porosity of mesoporous silica materials

Effect of synthesis time and treatment on porosity of mesoporous silica materials

Preparation and Characterization of Inorganic Membranes for Hydrocarbon Separation from N2 for Environmental Applications

Photocatalytic efficiency of sol–gel synthesized Mn‐doped TiO₂ nanoparticles for degradation of brilliant green dye and mixture of dyes

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An improved methodology for adsorption characterization of unmodified and modified silica gels

Cited by 26 publications

References 14 publications

Effect of synthesis time and treatment on porosity of mesoporous silica materials

Effect of synthesis time and treatment on porosity of mesoporous silica materials

Preparation and Characterization of Inorganic Membranes for Hydrocarbon Separation from N2 for Environmental Applications

Photocatalytic efficiency of sol–gel synthesized Mn‐doped TiO2 nanoparticles for degradation of brilliant green dye and mixture of dyes

Contact Info

Product

Resources

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Photocatalytic efficiency of sol–gel synthesized Mn‐doped TiO₂ nanoparticles for degradation of brilliant green dye and mixture of dyes