Synthesis and characterisation of microporous titania membranes by dip-coating of anodised alumina substrates using sol–gel method

Kermanpur, A.; Ghassemali, Ehsan; Salemizadeh, S.

doi:10.1016/j.jallcom.2007.06.114

Cited by 22 publications

(6 citation statements)

References 10 publications

(13 reference statements)

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“…4b) The structural features provide high surface area and a large stationary phase loading supporting to a high extraction capacity for titania formed in 30 min reaction time. The pore size of titania formed in 30 min is around three times larger than the pore sizes of these prepared by dip-coating of anodized alumina using sol-gel method 26 and in SPME titania wire fabricated by in situ oxidation with H2O2 for DDT analysis. 22 …”

Section: Optimization Of Sol-gel Preparation Of Titania As Sorbent Fomentioning

confidence: 90%

“…These coating techniques include direct-pasting, 15 electrodeposition, 14,16 chemical oxidation [20][21][22] and sol-gel techniques. [23][24][25][26] The sol-gel process usually involves catalytic hydrolysis of the alkoxide precursors and polycondensation of the hydrolyzed products in the sol solution to form a macromolecular network structure of sol-gel metal oxides. 27,28 Sol-gel coating technology is a good option for SPME wire preparation in these coating techniques.…”

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confidence: 99%

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Sol-gel Titania-Coated Needles for Solid Phase Dynamic Extraction-GC/MS Analysis of Desomorphine and Desocodeine

Srimurugan

Chen

et al. 2011

ANAL. SCI.

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Novel sol-gel titania film coated needles for solid-phase dynamic extraction (SPDE)-GC/MS analysis of desomorphine and desocodeine are described. The high thermal stability of titania film permits efficient extraction and analysis of poorly volatile opiate drugs. The influences of sol-gel reaction time, coating layer, extraction and desorption time and temperature on the SPDE needle performance were investigated. The deuterium labeled internal standard was introduced either during the extraction of analyte or directly injected to GC after the extraction process. The latter method was shown to be more sensitive for the analysis of water and urine samples containing opiate drugs. The proposed conditions provided a wide linear range (from 5 -5000 ppb), and satisfactory linearity, with R 2 values from 0.9958 to 0.9999, and prominent sensitivity, LOQs (1.0 -5.0 ng/g). The sol-gel titania film coated needle with SPDE-GC/MS will be a promising technique for desomorphine and desocodeine analysis in urine.

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Section: Optimization Of Sol-gel Preparation Of Titania As Sorbent Fomentioning

confidence: 90%

mentioning

confidence: 99%

Sol-gel Titania-Coated Needles for Solid Phase Dynamic Extraction-GC/MS Analysis of Desomorphine and Desocodeine

Srimurugan

Chen

et al. 2011

ANAL. SCI.

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“…According to Figure 5, the thermogravimetric curve follows 19% weight loss during two steps. The first step extends up to about 130 ∘ C that is attributed to the removal of adsorbed water corresponding to endothermic peak [22][23][24]. The second step extends up to 420 ∘ C that is according to the expulsion of organics and the dehydroxylation of Ti(OH) 4 .…”

Section: Thermal Analysismentioning

confidence: 99%

Synthesis of Nanostructured Anatase Mesoporous Membranes with Photocatalytic and Separation Capabilities for Water Ultrafiltration Process

Tajer-Kajinebaf

Sarpoolaky

Mohammadi

2013

International Journal of Photoenergy

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In this work, the nanostructured anatase mesoporous membranes were prepared for water ultrafiltration (UF) process with photocatalytic and physical separation capabilities. A macroporous substrate was synthesized fromα-Al2O3, then a colloidal titania sol was used for the preparation of the intermediate layer. Also, the membrane top layer was synthesized by deposition and calcination of titania polymeric sol on the intermediate layer. The characterization was performed by DLS, TG-DTA, XRD, BET, FESEM, TEM, and AFM techniques. Also, the filtration experiments were carried out based on separation of methyl orange from aqueous solution by a membrane setup with a dead-end filtration cell. Photocatalytic activity of the membranes was evaluated by methyl orange photodegradation using UV-visible spectrophotometer. The mean particle size of the colloidal and polymeric sols was 14 and 1.5 nm, respectively. The anatase membranes exhibited homogeneity, with the surface area of 32.8 m2/g, the mean pore size of 8.17 nm, and the crystallite size of 9.6 nm. The methyl orange removal efficiency by the mesoporous membrane based on physical separation was determined to be 52% that was improved up to 83% by a coupling photocatalytic technique. Thus, the UF membrane showed a high potential due to its multifunctional capability for water purification applications.

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“…A low pH is favorable for hydrolysis reaction (Sekulic et al 2004). An optimum pH value of 2 is required to form a stable sol (Kermanpur et al 2008). HCl (or other acids) could be incorporated in the sol preparation to control the condensation rate and to prevent fast gelation of the sol (Habibi et al 2007a, Van Gestel et al 2002.…”

Section: Fundamental Of Heterogeneous Photocatalysismentioning

confidence: 99%

Hybrid TiO2 photocatalytic ceramic membranes : fabrication, characterization and performance evaluation

Goei¹

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Synthesis and characterisation of microporous titania membranes by dip-coating of anodised alumina substrates using sol–gel method

Cited by 22 publications

References 10 publications

Sol-gel Titania-Coated Needles for Solid Phase Dynamic Extraction-GC/MS Analysis of Desomorphine and Desocodeine

Sol-gel Titania-Coated Needles for Solid Phase Dynamic Extraction-GC/MS Analysis of Desomorphine and Desocodeine

Synthesis of Nanostructured Anatase Mesoporous Membranes with Photocatalytic and Separation Capabilities for Water Ultrafiltration Process

Hybrid TiO2 photocatalytic ceramic membranes : fabrication, characterization and performance evaluation

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