Structural characterization of hexadecyltrimethylammonium-smectite composites and their potentiometric electrode applications

Çubuk, Osman; Çağlar, Bülent; Topçu, Cihan; Çoldur, Fatih; Sarp, Gökhan; Tabak, Ahmet Fatih; Şahin, Erdal

doi:10.1016/j.apsusc.2015.02.110

Cited by 22 publications

(22 citation statements)

References 88 publications

(104 reference statements)

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“…The XRPD diffractograms indicate that in the case of the C 16 and 2C 12 surfactants, from 1.0 CEC to 2.0 CEC level loading, the d 001 basal spacing has two values, Figure 2. This result is in agreement with the fact that C 16 and 2C 12 surfactants have more than one molecular arrangement as described by Park [24] and Cubuk et al [30] for Ca-montmorillonite interlayers. This may depend on different availability for loading of different particles.…”

Section: X-ray Diffraction Of the Organoclayssupporting

confidence: 92%

“…The peaks related to d 001 spacing are shifted to lower Bragg angles for all modified clay samples with increased surfactant loading. This variation in the intercalation spacing is systematic with length, number of long alkyl chains and level of surfactant loading applied for the Ca-montmorillonite clays, which is in agreement with the previous studies [23,24,30,42]. The increase of the d 001 basal spacing at the surfactant intercalation also sustains the decrease of the relative density.…”

Section: X-ray Diffraction Of the Organoclayssupporting

confidence: 91%

“…This effect of the level of loading on the d 001 basal spacing values is in agreement with the previous studies [23,24,29,37,40,41]. Cubuk et al and Caglar et al [30,31] reported that the basal spacing (d 001 ) values of modified clays, prepared with C 12 and C 16 surfactants added between 0.5 CEC and 3.0 CEC increased for each successive level loading (XRD step size 0.026º for 2θ). However, in the present work we found that the basal spacing remains the same in some cases for two successive level loadings.…”

Section: X-ray Diffraction Of the Organoclayssupporting

confidence: 90%

“…Four (CH 3 ) 2 N + ions as bromide salts have been used in solid-state intercalation reactions with two natural clays of smectite type collected in the Eastern part of Burkina Faso. Clays modified with quaternary alkylammoniums derivatives such as n-hexadecyltrimethylammonium and ndodecytrimethyl-ammonium bromides have been reported in a number of studies [12,21,24,29,30,31], those intercalated with n-tetradecyltrimethylammonium and di-ndodecyldimethylammonium bromides have only been the subject of a limited number of studies [21,23,24,29,32].…”

Section: Introductionmentioning

confidence: 99%

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Solid-state synthesis and physico-chemical characterization of modified smectites using natural clays from Burkina Faso

Garikoé¹,

Sorgho²,

Guel³

et al. 2021

Bull. Chem. Soc. Eth.

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Solid-state intercalation was applied to prepare organo-smectites using cationic surfactants and natural clays containing smectite at various surfactant/smectite ratios. The surfactants enter the interlayers of smectites causing a swelling of the clays. The used clays were collected in Siétougou and Diabari villages located in the eastern part of Burkina Faso. The solid-state intercalation was successful for all four surfactants applied, n-dodecyltrimethylammonium bromide, (n-C12H25(CH3)3NBr), n-tetradecyltrimethylammonium bromide, (n-C14H29(CH3)3NBr), n-hexadecyltrimethylammonium bromide (n-C16H33(CH3)3NBr) and di-n-dodecyldimethylammonium bromide ((n-C12H25)2(CH3)2NBr) at different levels of the cation exchange capacity (CEC). The synthesized organo-smectites were characterized regarding relative density, structural and textural properties. XRPD data showed a systematic increase of the basal spacing of the unit cell of the smectite up to >38 Å at 2.0-CEC loading of the surfactant. This increase indicates that the surfactants penetrated into the smectite interlayers with the surfactants being arranged parallel to the layers at low concentrations and almost perpendicular at high ones. FTIR spectra of the organo-smectites showed a decrease in the intensities of the water bands at around 1630 cm-1 and 3400 cm-1, and new specific bands close to 2920 cm-1 and 2850 cm-1 were assigned to the asymmetric and symmetric stretching of CH2 groups of the surfactants, respectively. KEY WORDS: Smectite, Organo-smectite, Surfactant, Intercalation Bull. Chem. Soc. Ethiop. 2021, 35(1), 43-59. DOI: https://dx.doi.org/10.4314/bcse.v35i1.4

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Section: X-ray Diffraction Of the Organoclayssupporting

confidence: 92%

Section: X-ray Diffraction Of the Organoclayssupporting

confidence: 91%

Section: X-ray Diffraction Of the Organoclayssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Solid-state synthesis and physico-chemical characterization of modified smectites using natural clays from Burkina Faso

Garikoé¹,

Sorgho²,

Guel³

et al. 2021

Bull. Chem. Soc. Eth.

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“…In this context, earlier our research group has reported a number of cation and anion selective electrodes [19][20][21][22][23] and ongoing studies have been motivated on the development of novel ion selective electrodes for different species.…”

Section: Introductionmentioning

confidence: 99%

Construction of a novel highly selective potentiometric perchlorate sensor based on neocuproine–Cu(II) complex formed in situ during the conditioning period

Önder¹,

Topçu²,

Çoldur³

2018

chemija

Self Cite

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A potentiometric perchlorate-selective electrode based on a phenanthroline derivative, neocuproine (2,9-dimethyl-1,10-phenanthroline), was developed. An electroactive substance, a neocuproine complex of Cu 2+ , providing a selective response to perchlorate was formed in situ in the electrode membrane structure during the conditioning process. Membrane optimization studies showed that the most suitable membrane composition was 1.0% (w/w) neocuproine, 69.0% (w/w) o-nitrophenyloctylether (o-NPOE) and 30.0% (w/w) poly(vinyl chloride) (PVC) in terms of potentiometric performance characteristics. For the proposed electrode, the linear range, slope, detection limit, pH working range and response time were determined as 2.5 × 10 -7 -1.0 × 10 -1 M, -53.01 mV/decade, 1.0 × 10 -7 M, 4.0-12.5 and ≈3 s, respectively. The proposed sensor was successfully used in the determination of perchlorate contents of some perchlorate spiked tap, river and dam water samples.

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8-Hydroxyquinoline intercalated montmorillonite composite: characterization and application for copper ion determination as potentiometric electrode

Udomphan

Sontawee

Dangsanga

2023

J Solid State Electrochem

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Structural characterization of hexadecyltrimethylammonium-smectite composites and their potentiometric electrode applications

Cited by 22 publications

References 88 publications

Solid-state synthesis and physico-chemical characterization of modified smectites using natural clays from Burkina Faso

Solid-state synthesis and physico-chemical characterization of modified smectites using natural clays from Burkina Faso

Construction of a novel highly selective potentiometric perchlorate sensor based on neocuproine–Cu(II) complex formed in situ during the conditioning period

8-Hydroxyquinoline intercalated montmorillonite composite: characterization and application for copper ion determination as potentiometric electrode

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