Phenolic hydroxyl functionalized hyper-crosslinked polymers and their efficient adsorption

Fu, Yuli; Yu, Ke; Wang, You; Cao, Yiwen; Zhong, Shihua; Xu, Mancai; Lei, Ting; Huang, Jianhan

doi:10.1016/j.seppur.2023.123817

Cited by 21 publications

(4 citation statements)

References 45 publications

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“… Additionally, there is a notable enhancement in the O–H vibration (3661–3197 cm –1 ), CO stretching (1726 cm –1 ), and C–O band (1229 cm –1 ) for the intermediate PS-BTCA . These results are consistent with the elemental analysis, indicating a decrease of the chlorine content from 17.3% to 3.99% and an increase of the oxygen content up to 13.48%. , As for the XPS spectra, the high-resolution C 1s revealed the new characteristic peaks corresponding to C–O and CO configuations observed at 285.34 and 286.47 eV, respectively (Figure c) . Similarly, an increase of the C–O and CO vibrations is displayed in the high-resolution O 1s, which had binding energies at 532.39 and 533.78 eV, respectively.…”

Section: Resultssupporting

confidence: 80%

Pore Regulation of Carboxyl-Functionalized Hyper-Crosslinked Polymers and Their Efficient Aniline Adsorption

Wang,

Liang,

Cao

et al. 2024

Ind. Eng. Chem. Res.

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Herein, both surface chemistry engineering and pore partition strategies were adopted to regulate the pore environments of the hyper-crosslinked polymers (HCPs) to strengthen their aniline adsorption from water. Specifically, plentiful carboxyl groups were first anchored on the macropores of polystyrene through the nucleophilic substitution, and then abundant rigid methylene partitioned the macropores of polystyrene into abundant micropores/mesopores through the Friedel−Crafts alkylation. As a result, carboxyl-functionalized HCPs were accurately prepared as planned. PS-BTCA-HCP-4 exhibited the highest adsorption to aniline, boasting the q max of 396 mg/g, which can be largely attributed to its highest S BET of 478.0 m 2 /g and the rich carboxyl groups with the oxygen content of 11.31%. Furthermore, it achieved adsorption equilibrium within 70 min, and its deliberately hierarchical porosity consisting of plentiful micropores/mesopores made a positive contribution.

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Section: Resultssupporting

confidence: 80%

Pore Regulation of Carboxyl-Functionalized Hyper-Crosslinked Polymers and Their Efficient Aniline Adsorption

Wang,

Liang,

Cao

et al. 2024

Ind. Eng. Chem. Res.

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“…The exceptional sorption properties of HPS are based mainly on hydrophobic and π-π interactions [38], but through functionalization the possibilities of using HPS as a sorbent are significantly expanded [39]. Its chemical modification can be carried out after polymer synthesis, for example, via treatment with concentrated sulfuric acid to sulfonate the surface [25,40] or by introducing monomers containing functional groups directly during the synthesis of HPS [41][42][43]. There is a significant amount of research on the application of HPS-based sorbents in medicine.…”

Section: Hypercrosslinked Polystyrene (Hps): Synthesis Properties And...mentioning

confidence: 99%

An Overview of Heterogeneous Catalysts Based on Hypercrosslinked Polystyrene for the Synthesis and Transformation of Platform Chemicals Derived from Biomass

Manaenkov,

Nikoshvili,

Bykov

et al. 2023

Molecules

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Platform chemicals, also known as chemical building blocks, are substances that serve as starting materials for the synthesis of various value-added products, which find a wide range of applications. These chemicals are the key ingredients for many fine and specialty chemicals. Most of the transformations of platform chemicals are catalytic processes, which should meet the requirements of sustainable chemistry: to be not toxic for humans, to be safe for the environment, and to allow multiple reuses of catalytic materials. This paper presents an overview of a new class of heterogeneous catalysts based on nanoparticles of catalytically active metals stabilized by a polymer matrix of hypercrosslinked polystyrene (HPS). This polymeric support is characterized by hierarchical porosity (including meso- and macropores along with micropores), which is important both for the formation of metal nanoparticles and for efficient mass transfer of reactants. The influence of key parameters such as the morphology of nanoparticles (bimetallic versus monometallic) and the presence of functional groups in the polymer matrix on the catalytic properties is considered. Emphasis is placed on the use of this class of heterogeneous catalysts for the conversion of plant polysaccharides into polyols (sorbitol, mannitol, and glycols), hydrogenation of levulinic acid, furfural, oxidation of disaccharides, and some other reactions that might be useful for large-scale industrial processes that aim to be sustainable. Some challenges related to the use of HPS-based catalysts are addressed and multiple perspectives are discussed.

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“…However, some unavoidable challenges limit the application of HCPs as adsorption materials. For example, HCPs synthesized with nonpolar aromatic monomers have strong hydrophobicity and low skeleton density. − These properties make them float on the surface of water, resulting in poor interaction with water, thus hampering adsorption performance. A prospective solution to resolve this issue is the modification of these HCPs into magnetic composites.…”

Section: Introductionmentioning

confidence: 99%

Fe₃O₄ Nanoparticle/Hyper-Cross-Linked Polymer Composites for Dye Removal

Gao,

Lu,

Chen

et al. 2024

ACS Appl. Nano Mater.

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A "dual-purpose reagent" strategy was developed for the facile synthesis of magnetic Fe 3 O 4 nanoparticle/hyper-cross-linked polymers (MHCPs). Ferric chloride serves both as a catalyst for the Friedel−Crafts reaction and as an iron source for the preparation of Fe 3 O 4 magnetic nanoparticles. This preparation method is advantageous in terms of simplicity, eco-friendliness, and cost-effectiveness. A variety of analytical techniques such as scanning electron microscopy, transmission electron microscopy, and Fourier transformed infrared spectra were employed to characterize the composites. The high density of aromatic and alkyl groups on hyper-cross-linked polymers (HCPs) enables them to exhibit a high affinity for dyes through hydrophobic and π−π interactions. The complexation of HCPs with magnetic nanoparticles makes the dye removal process simple, fast, and efficient. As a result, the MHCPs exhibited excellent adsorption performance for different azo dyes. The maximum adsorption capacity of Fe 3 O 4 /HCP TPB for crystal violet (CV) was up to 100.3 mg/g with an adsorption efficiency of 94.1%. The experimental data of CV adsorption on Fe 3 O 4 /HCP TPB were computed by different isotherm and kinetics models. The results showed that the experimental data were in close agreement with the Langmuir model and followed the pseudo-second-order kinetic model. In addition, even after 6 successive cycles of adsorption−desorption, acceptable removal efficiency was still retained. Based on these results, MHCPs are a promising adsorbent in the removal of dyes from the aqueous phase.

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Phenolic hydroxyl functionalized hyper-crosslinked polymers and their efficient adsorption

Cited by 21 publications

References 45 publications

Pore Regulation of Carboxyl-Functionalized Hyper-Crosslinked Polymers and Their Efficient Aniline Adsorption

Pore Regulation of Carboxyl-Functionalized Hyper-Crosslinked Polymers and Their Efficient Aniline Adsorption

An Overview of Heterogeneous Catalysts Based on Hypercrosslinked Polystyrene for the Synthesis and Transformation of Platform Chemicals Derived from Biomass

Fe₃O₄ Nanoparticle/Hyper-Cross-Linked Polymer Composites for Dye Removal

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Phenolic hydroxyl functionalized hyper-crosslinked polymers and their efficient adsorption

Cited by 21 publications

References 45 publications

Pore Regulation of Carboxyl-Functionalized Hyper-Crosslinked Polymers and Their Efficient Aniline Adsorption

Pore Regulation of Carboxyl-Functionalized Hyper-Crosslinked Polymers and Their Efficient Aniline Adsorption

An Overview of Heterogeneous Catalysts Based on Hypercrosslinked Polystyrene for the Synthesis and Transformation of Platform Chemicals Derived from Biomass

Fe3O4 Nanoparticle/Hyper-Cross-Linked Polymer Composites for Dye Removal

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Product

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About

Fe₃O₄ Nanoparticle/Hyper-Cross-Linked Polymer Composites for Dye Removal