Facile fabrication of pH-sensitive nanoparticles based on nanocellulose for fast and efficient As(V) removal

Chai, Fei; Wang, Runkai; Yan, Lili; Li, Guanghui; Cai, Yang; Xi, Chunyan

doi:10.1016/j.carbpol.2020.116511

Cited by 37 publications

(5 citation statements)

References 33 publications

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“…In recent years, the coexistence of BPA and Cu 2+ has been frequently detected in soils, surface waters, and groundwater environments [93]. The molecular chain of PEI has many free amino groups [94], which can easily chelate with metal ions [95]. Therefore, the use of PEI as a carrier to prepare the composite materials can improve the removal efficiency of metal ions.…”

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

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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.

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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

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“…Besides that, the developed adsorbent could also be easily regenerated by EDTA and retain the adsorption capacity after repeatedly using. Recently, Chai et al (2020) 116 fabricated a functionalized CNC with PEI and glutaraldehyde in order to remove arsenic. The maximum adsorption capacity was 255.19 mg g −1 .…”

Section: Nanocellulose As Adsorbent Of Heavy Metalsmentioning

confidence: 99%

Nanocellulose: a bioadsorbent for chemical contaminant remediation

et al. 2021

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“…The obtained adsorbent could selectively adsorb AgCl 1−i from the Ag(I)-Cu(II)-Ni(II) solution; however, toxic glutaraldehyde was used in the functionalization. Chai et al [ 18 ] prepared a pH-sensitive nanocellulose adsorbent modified with polyethyleneimine (PEI) and glutaraldehyde, which was efficient in the removal of As(V) at pH 3. Glutaraldehyde was used as a crosslinker between TEMPO-oxidized nanocellulose and PEI.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Removal of Cr(VI), Pb2+, and Cu2+ from Aqueous Solutions Using Amino-Functionalized Cellulose Nanocrystal

Huang

Guo

et al. 2021

Molecules

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In this work, the amino-functionalized cellulose nanocrystal (ACNC) was prepared using a green route and applied as a biosorbent for adsorption of Cr(VI), Pb2+, and Cu2+ from aqueous solutions. CNC was firstly oxidized by sodium periodate to yield the dialdehyde nanocellulose (DACNC). Then, DACNC reacted with diethylenetriamine (DETA) to obtain amino-functionalized nanocellulose (ACNC) through a Schiff base reaction. The properties of DACNC and ACNC were characterized by using elemental analysis, Fourier transform infrared spectroscopy (FT-IR), Kaiser test, atomic force microscopy (AFM), X-ray diffraction (XRD), and zeta potential measurement. The presence of free amino groups was evidenced by the FT-IR results and Kaiser test. ACNCs exhibited an amphoteric nature with isoelectric points between pH 8 and 9. After the chemical modification, the cellulose I polymorph of nanocellulose remained, while the crystallinity decreased. The adsorption behavior of ACNC was investigated for the removal of Cr(VI), Pb2+, and Cu2+ in aqueous solutions. The maximum adsorption capacities were obtained at pH 2 for Cr(VI) and pH 6 for Cu2+ and Pb2+, respectively. The adsorption all followed pseudo second-order kinetics and Sips adsorption isotherms. The estimated adsorption capacities for Cr(VI), Pb2+, and Cu2+ were 70.503, 54.115, and 49.600 mg/g, respectively.

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Facile fabrication of pH-sensitive nanoparticles based on nanocellulose for fast and efficient As(V) removal

Cited by 37 publications

References 33 publications

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

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

Nanocellulose: a bioadsorbent for chemical contaminant remediation

Enhancing Removal of Cr(VI), Pb2+, and Cu2+ from Aqueous Solutions Using Amino-Functionalized Cellulose Nanocrystal

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