Novel synthesis route of porous clay heterostructures via mixed surfactant template and their dielectric behavior

Chotiradsirikun, Suchinda; Guo, Ruyan; Bhalla, A. S.; Manuspiya, Hathaikarn

doi:10.1007/s10934-020-00971-4

Cited by 10 publications

(16 citation statements)

References 33 publications

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“…However, when Ca-Mt (without prior modification) was reacted with pure C12 amine and TEOS, a slight expansion of basal spacing (d 001 ) arose, from 1.51 to 1.72 nm, thus confirming the requirement to expand the interlayer spacing as a first stage prior the preparation of PCH precursors [ 33 ]. The obtained values of 3.61 and 4.01 nm were in the range reported for PCH precursors [ 32 , 33 , 48 ].…”

Section: Resultssupporting

confidence: 72%

“…The FTIR spectrum of Al-PCH precursor exhibited additional bands ranging from 3000 to 2800 cm −1 , which agreed with the anti-symmetric and symmetric vibrations of methyl and methylene groups (–CH 2 ) of the tails ‘s C 12 amine surfactants [ 54 ], whereas a small band at the 1478 cm −1 region is ascribed to the bending vibrations of C–H [ 48 , 54 ]. ( Figure 3 ).…”

Section: Resultsmentioning

confidence: 62%

“…The materials retained the mesoporous character with an increase of the average pore diameter values of 3.82 and 4.67 nm. The microtextural properties of the studied PCH materials were higher compared to those reported for PCH materials prepared by conventional manners reported in the literature [ 48 , 60 , 61 ], and the proposed method could be used to tune the properties of the obtained PCHs; indeed, previous studies have demonstrated that these characteristics were altered by varying the ratios of Al mmoles to clay or Zr mmoles to clay prior the preparation of the PCH derivatives.…”

Section: Resultsmentioning

confidence: 63%

“…After calcination at 550 °C of the Al-PCH and Zr-PCH precursors, the PXRD patterns indicated a reduction of the basal spacing to 3.80 and 3.84 nm, respectively ( Figure 2 ). This fact resulted from the combustion of the organic moieties and to the formation and the condensation of three-dimensional silica species, as reported for PCH materials prepared using conventional methods [ 48 , 49 ].…”

Section: Resultsmentioning

confidence: 84%

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Al and Zr Porous Clay Heterostructures as Removal Agents of Basic Blue-41 Dye from an Artificially Polluted Solution: Regeneration Properties and Batch Design

et al. 2021

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The removal of Basic Blue-41 dye molecules was carried out by using two doped porous clay heterostructures by aluminum (Al) or zirconium (Zr) species. The proposed method of synthesis showed its efficiency, starting from Al or Zr intercalated hydrolyzed species, prior to its reaction with dodecylamine (C12 amine) and tetraethyl orthosilicate (TEOS) as a silica source. The intercalated precursors and their porous clay heterostructures (PCH) derivatives were characterized by different techniques. Solid NMR technique proved the presence of Al species into the intercalated silica between the clay sheets, and in addition to Si in different environments within the PCH materials. The Zr-PCH material exhibited a higher surface area and pore volume compared to its Al-PCH counterpart, with a mesoporous character for both materials. A maximum removed amount of 279 and 332 mg/g was achieved and deduced from the Langmuir equation. The regeneration tests revealed that the removal efficiency of Zr-PCH was retained after five regeneration runs, with a loss of 15% of the original value; meanwhile, the Al-PCH lost 45% of its efficiency after only three cycles. A single-stage batch design was proposed based on the Langmuir isotherm parameters. The increase of the removal capacity of Zr-PCH led to the reduction of the required amounts for the target removal of BB-41 dye compared to Al-PCH.

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Section: Resultssupporting

confidence: 72%

Section: Resultsmentioning

confidence: 62%

Section: Resultsmentioning

confidence: 63%

Section: Resultsmentioning

confidence: 84%

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Al and Zr Porous Clay Heterostructures as Removal Agents of Basic Blue-41 Dye from an Artificially Polluted Solution: Regeneration Properties and Batch Design

et al. 2021

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“…The PCHs synthesis is based on three main steps: (1) intercalation of surfactant (quaternary alkylammonium cations) and co-surfactant (neutral amine) into layered inorganic clay, (2) hydrolysis and condensation of silica precursor (tetraethyl orthosilicate) in the clay gallery, and (3) thermal treatment or solvent extraction in order to remove the organic compounds [ 49 , 50 , 51 , 52 , 53 ]. PCHs are innovative materials with versatile properties such as: tunable textural properties (high surface area, microporosity, and mesoporosity) [ 54 , 55 , 56 , 57 , 58 ], high adsorption capacity of volatile organic compounds (VOCs) [ 59 ], acidic properties [ 60 ], high thermal stability and mechanical strength, catalytic properties [ 61 ], and dielectric properties [ 62 , 63 ]. The properties of PCH can be adjusted according to the targeted application.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Hosts Based on Sodium Alginate and Porous Clay Heterostructures for Drug Encapsulation

et al. 2021

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In this study, some hybrid materials based on sodium alginate (NaAlg) and porous clay heterostructures (PCHs) were investigated as new hosts for 5-Fluorouracil (5-FU) encapsulation. The hybrid hosts were prepared by ionotropic gelation technique using different concentrations of PCHs (1, 3, and 10 wt%) in order to identify the optimal parameters for encapsulation and drug release. The obtained hybrid materials were characterized using FTIR Spectrometry, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and UV-Vis spectrometry to investigate the interactions of the raw materials involved in the preparation of hybrid hosts, the influence of PCHs concentrations on drug encapsulation efficiency and drug release profile. All the results show that the synthesized hybrid materials were able to load a high amount of 5-FU, the encapsulation efficiency and the release profile being influenced by the concentrations of PCHs.

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Improvement of compatibility, mechanical, thermal and dielectric properties of poly(lactic acid) and poly(butylene adipate‐co‐terephthalate) blends and their composites with porous clay heterostructures from mixed surfactant systems

Chotiradsirikun

Than‐ardna

Guo

et al. 2022

Polymers for Advanced Techs

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In this study, nanocomposite poly(lactic acid) and poly(butylene adipate‐co‐terephthalate) (PLA/PBAT) blends were prepared through polymer blending in the presence of multi‐functional epoxy as a compatibilizer that could react with epoxy group and terminated end group of two phases to increase interfacial adhesion between PLA and PBAT and improve the toughness of PLA. The effects of porous clay heterostructure from mixed CTAB:CTAC surfactant in the mole ratio of 1:2 (B1C2‐PCH) were also investigated. The elongation at break of the blends reached 38%, which was eight times that of neat PLA. The cryo‐fractured surface demonstrated the interfacial adhesion caused by the interaction of the epoxy group of the reactive compatibilizer with the terminal carboxyl and hydroxyl groups of PLA and PBAT. Moreover, PBAT reduced the crystallization rate and percent crystallinity of the PLA matrix and further decreased when compatibilizer was used. Alternatively, B1C2‐PCH accelerated the heterogeneous nucleation and crystallization of the nanocomposite films. After adding small amount of B1C2‐PCH, the nanocomposite films demonstrated excellent dielectric properties. Therefore, the improvement of PLA/PBAT nanocomposite blends are capable to be further developed as polymeric capacitor films.

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Novel synthesis route of porous clay heterostructures via mixed surfactant template and their dielectric behavior

Cited by 10 publications

References 33 publications

Al and Zr Porous Clay Heterostructures as Removal Agents of Basic Blue-41 Dye from an Artificially Polluted Solution: Regeneration Properties and Batch Design

Al and Zr Porous Clay Heterostructures as Removal Agents of Basic Blue-41 Dye from an Artificially Polluted Solution: Regeneration Properties and Batch Design

Hybrid Hosts Based on Sodium Alginate and Porous Clay Heterostructures for Drug Encapsulation

Improvement of compatibility, mechanical, thermal and dielectric properties of poly(lactic acid) and poly(butylene adipate‐co‐terephthalate) blends and their composites with porous clay heterostructures from mixed surfactant systems

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