Adsorption of hydroquinone and Pb(II) from water by β-cyclodextrin/polyethyleneimine bi-functional polymer

Xu, Weifeng; Liu, Xiang; Tang, Kewen

doi:10.1016/j.carbpol.2022.119806

Cited by 29 publications

(5 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The band at 3450 cm −1 was ascribed to the − OH stretching, and the peaks at around 620 cm −1 were assigned to S�O. 12,58 After the adsorption of HQ, the outcomes of FT-IR indicated that the peaks (3149, 1392, 1638, 1035 cm −1 ) of NSAC-ZIF-67@C belong to −NH 2 , C−N, C�C and phenols (C−O) shifted to the wavenumber region peaks (3128, 1384, 1626, 1027 cm −1 ) of NSAC-ZIF-67@C-HQ. 11 These phenomena may be mainly responsible for the π−π interactions between the aromatic ring of HQ and the NSAC-ZIF-67@C, hydrogen-bonding formation between the −NH 2 groups and phenol hydroxyl groups.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The development of adsorbents with high efficiency and excellent adsorption performance for the HQ is necessary. Various adsorbents have been considered, including activated carbon, functionalized graphene, MXene, polyethylenimine, and metal–organic framework (MOF) materials. ,− Especially, biomass-derived activated carbon has been conceived as potential candidates owing to its abundant resources, renewability, and eco-friendliness . Generally, the specific surface area and functional groups of the adsorbent play a crucial role in the adsorption performance of HQ.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

ZIF-67 and Biomass-Derived N, S-Codoped Activated Carbon Composite Derivative for High-Effective Removal of Hydroquinone from Water

Yang,

Wang,

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Hydroquinone (HQ) in wastewater is of great concern, as it is harmful to human health and threatens the ecological environment. However, the existing adsorbents have low adsorption capacity for HQ. To improve the removal of HQ, N,Scodoped activated carbon-ZIF-67 (NSAC-ZIF-67@C) was synthesized in this study by in situ growth of ZIF-67 on N,S-codoped activated carbon (NSAC) and carbonization. The influence of pH, contact time, and initial concentration on the adsorption behaviors of NSAC-ZIF-67@C on HQ were investigated. Owing to the synergistic effect of abundant active sites and well-developed pore structure, the NSAC-ZIF-67@C achieved a prominent adsorption capacity of 962 mg•g −1 and can still retain high adsorption performance after 5 cycles for HQ, which is superior to that of reported other adsorbents. HQ adsorption follows the pseudosecond-order kinetics model (R 2 = 0.99999) and the Freundlich isotherm model. X-ray photoelectron spectroscopy (XPS) analysis before and after adsorption as well as density functional theory (DFT) calculation results showed that pyridinic-N-termini were conducive to the π−π interactions and hydrogen-bonding interactions. Therefore, the adsorption mechanisms of NSAC-ZIF-67@C on HQ involve pore filling, electrostatic attraction, π−π interaction, and hydrogen bonding. This study is expected to provide a reference for designing highly effective adsorbents for wastewater treatment.

show abstract

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

ZIF-67 and Biomass-Derived N, S-Codoped Activated Carbon Composite Derivative for High-Effective Removal of Hydroquinone from Water

Yang,

Wang,

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…The organic synthetic polymer materials used for loading β-CD mainly include polyvinyl alcohol (PVA) [70,71,91], PEI [72], and polydopamine [92]. Zhao et al [70] synthesized a water-insoluble β-CD polymer (β-CDP) by loading β-CD onto PVA 1799 using citric acid as the crosslinking agent and sodium dihydrogen phosphate as the catalyst (Figure 17).…”

Section: Organic Synthetic Support-immobilized β-Cdmentioning

confidence: 99%

Achievements in Preparation of Cyclodextrin–Based Porous Materials for Removal of Pollutants

Bao,

Zhang,

Cao

et al. 2024

Separations

View full text Add to dashboard Cite

Cyclodextrin–based porous materials have been widely applied in removing various organic pollutants from water environments, due to their unique physical and chemical properties, like the size–matching effect and hydrophobic interaction. Large numbers of hydroxyl groups in its external structure give cyclodextrin a high solubility in water, but the existence of these hydroxyl groups also endows cyclodextrin with the ability to be chemically modified with various functional groups to reduce its solubility in water and, meanwhile, to develop some novel functionalized cyclodextrin–based porous materials for selective removal of the target organic pollutants. This review focuses on the recent development in the synthesis of cyclodextrin–based porous materials (crosslinked cyclodextrin polymers and immobilized cyclodextrins), as well as highlighting their applications and mechanisms in the removal of dyes, endocrine disruptors, and mixed pollutants from water. Finally, the challenges and future perspectives in related research fields are discussed.

show abstract

“…11 Due to their solubility in water, CDs cannot be used directly for separation; they must be rst made insoluble and supported on a porous material. 12 In the literature, there are some attempts to use CDs for the removal of specic contaminants, such as heavy metals, 13 endocrin disruptors, 14 dyes, 15 and some pharmaceutical compounds, 4,16 all very recent. However, the properties of the produced adsorbent can signicantly vary depending on the specic interactions between support and active phase, and the effects can be different depending on the probe molecule used for the adsorption tests.…”

Section: Introductionmentioning

confidence: 99%

Elimination of aspirin and paracetamol from aqueous media using Fe/N-CNT/β-cyclodextrin nanocomposite polymers: theoretical comparative survey via advanced physical models

et al. 2023

View full text Add to dashboard Cite

show abstract

Adsorption of hydroquinone and Pb(II) from water by β-cyclodextrin/polyethyleneimine bi-functional polymer

Cited by 29 publications

References 52 publications

ZIF-67 and Biomass-Derived N, S-Codoped Activated Carbon Composite Derivative for High-Effective Removal of Hydroquinone from Water

ZIF-67 and Biomass-Derived N, S-Codoped Activated Carbon Composite Derivative for High-Effective Removal of Hydroquinone from Water

Achievements in Preparation of Cyclodextrin–Based Porous Materials for Removal of Pollutants

Elimination of aspirin and paracetamol from aqueous media using Fe/N-CNT/β-cyclodextrin nanocomposite polymers: theoretical comparative survey via advanced physical models

Contact Info

Product

Resources

About