Preparation of surface-functionalized porous clay heterostructures via carbonization of soft-template and their adsorption performance for toluene

Wang, Yuebo; Su, Xiaoli; Xu, Zhen; Wen, Ke; Zhang, Ping; Zhu, Jianxi; He, Hongping

doi:10.1016/j.apsusc.2015.11.261

Cited by 46 publications

(21 citation statements)

References 63 publications

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“…Wang et al. synthesized PCHs where the template was not removed by calcination, but the organoclay suffers an acid treatment and later a pyrolytic treatment, which supposes the formation of PCHs with activated carbon in the galleries acting as molecular sieve and improving the benzene adsorption in comparison with the PCH …”

Section: Uses and Applications Of Pchsmentioning

confidence: 99%

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Synthesis, Characterization, Uses and Applications of Porous Clays Heterostructures: A Review

Cecilia

García‐Sancho

Vilarrasa-García

et al. 2018

The Chemical Record

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Porous clay heterostructures (PCH) are obtained by the insertion of an organic bulky cation in the interlayer spacing of a smectite, causing a swelling of the clay mineral. Right after, oxides species, mainly silicon oxide, are incorporated as pillars galleries between adjacent layers to form a porous structure after the removal of the template. The ordering of the clay mineral as well the organic cation incorporated in the synthetic step favors the modulation of the textural properties of the PCH. In addition, the incorporation of heteroatoms in the pillars galleries can also modulate the acidity of the PCH. The modulation of the pore size and the acid properties provides to these materials a wide range of applications in the fields of adsorption and catalysis. This paper carries out a detailed review of the synthesis of PCH, characterization as well as uses and application reported in the literature.

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Section: Uses and Applications Of Pchsmentioning

confidence: 99%

“…Thus, Wang et al. carried out a pyrolytic treatment instead of the calcination step, obtaining porous materials with mesoporosity of the clay galleries and microporosity coming from the activated carbon . On the other hand, Santos et al.…”

Section: Uses and Applications Of Pchsmentioning

confidence: 99%

Synthesis, Characterization, Uses and Applications of Porous Clays Heterostructures: A Review

Cecilia

García‐Sancho

Vilarrasa-García

et al. 2018

The Chemical Record

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“…After ultrasound treatment, however, the sodium counterion (Na1s) disappeared, and the S2p signal remarkably decreased in the SHpho‐MFS (Figure e). The peak of SO 2 was observed in the SHpho‐MFS, but its intensity remarkably decreased compared to the intensity of SO 3 in the SHphi‐MFS, confirming the cleavage of the ‐SO 3 group during the ultrasound treatment (Figure d,g). The C1s spectrum of the SHphi‐MFS was deconvoluted into four components: CH at 284.1 eV, CN at 284.9 eV, CS at 285.9 eV, and CN at 287.5 eV (Figure c) .…”

Section: Resultsmentioning

confidence: 59%

A Potential Amphiprotic Sponge with a Controlled Release Characteristic of Protons on Demand for Oil/Water Separation and Acid/Base Neutralization

Kaang

Lee

Han

et al. 2019

Adv Materials Inter

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Ultralight sponges with the ability to release protons on demand, namely, superhydrophobic melamine formaldehyde sponges (SHpho‐MFSs), which are characterized as being safe‐to‐handle, convenient‐to‐use, easy‐to‐store, easy‐to‐carry, and easy‐to‐collect, are switched from superhydrophilic MFSs (SHphi‐MFSs) by a one‐step ultrasound treatment at a low pH. The wettability of the SHphi‐MFS is completely switched from the outside to the inside of the MFS. After wettability switching is achieved, the SHpho‐MFS that is prewetted with water and oil is able to selectively separate both water and oil, respectively. A compressed SHpho‐MFS also exhibits excellent separation performance of a water‐in‐oil emulsion. Furthermore, since the SHpho‐MFS can linearly release protons in an aqueous solution, during the oil/water separation (water‐removing), an aqueous solution of a strong base is neutralized or changed into a certain solution with a tailored pH by a simple filtration step using an appropriately sized SHpho‐MFS. The SHpho‐MFS can maintain a slow reaction rate and reduce the sudden release of heat during neutralization. Controlled release of the SHpho‐MFS capable of the ordered production of protons on demand is also achieved because the release “on and off” behavior of protons is repeatedly observed for every cycle.

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“…Figure 3e displays the deconvolution of this newly emerging XPS feature peak of HCSW‐KH570‐SH, which can be resolved into two Gaussian components. The peak at 164.31 eV is assigned to sulfur making bond with carbon (CSC), which can be interpreted as the chemical bonds formed by the reaction between SH of TMPMP and CC of HCSW‐KH570. In addition, the peak at 163.30 eV is attributed to sulfur only bonded to sulfur and hydrogen (SH), which demonstrates that SH coming from TMPMP did not react with CC coming from HCSW‐KH570 completely …”

Section: Resultsmentioning

confidence: 99%

Surface modification of calcium sulfate whisker using thiol‐ene click reaction and its application in reinforced silicone rubber

Chen

Ding

Dong

et al. 2020

Journal of Polymer Science

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The hemihydrate calcium sulfate whisker (HCSW) was modified by γ‐(methacryloxy)propyl trimethoxy silane (KH570) and trimethylolpropane tris(3‐mercaptopropionate) via wet modification and thiol‐ene click reaction, and then the unmodified and modified HCSW were added into α, ω‐dihydroxy polysiloxane (DPS) matrix to prepare silicon rubber composites. After the dual‐surface modification, the surface of HCSW was transformed to hydrophobic, the hydration of whisker was obviously improved, and the whisker dispersed more evenly in the polymer. The mechanical properties, dynamic mechanical properties, and the medium resistance of the silicone rubber composite were compared. The tensile test shows that the silicone rubber shows better mechanical properties after adding the modified whiskers, among which HCSW‐KH570‐SH has the most significant reinforcement effect. Moreover, DPS/HCSW‐KH570‐SH shows the best medium resistance in toluene, gasoline, and water. The addition of modified whiskers can improve the storage modulus of silicone rubber significantly, while DMA and DSC show that the addition of modified whiskers can reduce the glass transition temperature of silicone rubber. The bound rubber indicates that the interface interaction between HCSW‐KH570‐SH and silicone rubber is the best.

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Preparation of surface-functionalized porous clay heterostructures via carbonization of soft-template and their adsorption performance for toluene

Cited by 46 publications

References 63 publications

Synthesis, Characterization, Uses and Applications of Porous Clays Heterostructures: A Review

Synthesis, Characterization, Uses and Applications of Porous Clays Heterostructures: A Review

A Potential Amphiprotic Sponge with a Controlled Release Characteristic of Protons on Demand for Oil/Water Separation and Acid/Base Neutralization

Surface modification of calcium sulfate whisker using thiol‐ene click reaction and its application in reinforced silicone rubber

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