Magnetic chitosan microspheres: An efficient and recyclable adsorbent for the removal of iodide from simulated nuclear wastewater

Li, Xin; Zeng, Danlin; He, Zhiyong; Ke, Ping; Tian, Yuhui; Wang, Guanghui

doi:10.1016/j.carbpol.2021.118729

Cited by 37 publications

(10 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increase in the I atomic ratio demonstrated the successful loading of I 2 . The distribution of the I element remained uniform after I 2 loading, indicating that I 2 was evenly dispersed in the carrier . This distribution was related to the cavity structure within the carrier and the distribution of I – …”

Section: Resultsmentioning

confidence: 90%

“…Therefore, it is always prohibited to measure pure iodine for SEM and XPS tests to prevent equipment contamination. However, I 2 complexed in compounds such as polyiodides could be analyzed using SEM and XPS as sublimation is no longer a concern. − For the carrier β-CD-POF(I) used in this study, I – was coordinated with β-CD to form a framework. I 2 was stably encapsulated within the cavities of β-CD-POF(I) and did not readily vaporize even under high vacuum, enabling accurate characterization via SEM and XPS.…”

Section: Resultsmentioning

confidence: 99%

“…The distribution of the I element remained uniform after I 2 loading, indicating that I 2 was evenly dispersed in the carrier. 51 This distribution was related to the cavity structure within the carrier and the distribution of I − . 32 The XPS analysis of I 2 @β-CD-POF(I) revealed the peaks corresponding to C 1s (284.8 eV), K 2p (292.8 eV), O 1s (532.4 eV), and I 3d (618.6 eV) (Figure 4A).…”

Section: Characterizations and Mechanism Of I 2 @β-Cd-pof(i)mentioning

confidence: 99%

See 2 more Smart Citations

Supramolecular Structure of the β-Cyclodextrin Metal–Organic Framework Optimizes Iodine Stability and Its Co-delivery with l-Menthol for Antibacterial Applications

Zhao,

Li,

Guo

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The spread of upper respiratory tract (URT) infections harms people's health and causes social burdens. Developing targeted treatment strategies for URT infections that exhibit good biocompatibility, stability, and strong antimicrobial effects remains challenging. The dual antimicrobial and antiviral effects of iodine (I 2 ) in combination with the cooling sensation of L-menthol in the respiratory tract can simultaneously alleviate URT inflammation symptoms. However, as both I 2 and L-menthol are volatile, addressing stability issues is crucial. In this study, a potassium iodide β-cyclodextrin metal−organic framework [β-CD-POF(I)] with appropriate particle size was used to coload and deliver I 2 and L-menthol. Primarily, β-CD-POF(I) was employed as the most efficient carrier to significantly enhance the stability of I 2 , surpassing any other known protection strategies in the pharmaceutical field (CD complexations, PVP conjugations, and cadexomer iodine). The mechanism underlying the improvement in stability of I 2 by β-CD-POF(I) was investigated through scanning electron microscopy with energy-dispersive X-ray spectroscopy, Xray photoelectron spectroscopy, Raman spectroscopy, and molecular docking. The results revealed that the key processes involved in improving stability were the inclusion of I 2 by β-CD cavities in β-CD-POF(I) and the formation of polyiodide anion between iodine ions and I 2 . Furthermore, the potential of β-CD-POF(I) to load and deliver drugs was validated, and coloading of L-menthol and I 2 demonstrated reliable stability. β-CD-POF(I) achieved a rate of URT deposition ≥95% in vitro, and the combined antibacterial effects of coloaded I 2 and L-menthol was better than I 2 or PVP-I alone, with no irritation noted following URT administration in rabbits. Therefore, the stable coloading of drugs by β-CD-POF(I), leading to enhanced antimicrobial effects, provides a new strategy for treating URT infections.

show abstract

Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Section: Characterizations and Mechanism Of I 2 @β-Cd-pof(i)mentioning

confidence: 99%

See 1 more Smart Citation

Supramolecular Structure of the β-Cyclodextrin Metal–Organic Framework Optimizes Iodine Stability and Its Co-delivery with l-Menthol for Antibacterial Applications

Zhao,

Li,

Guo

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…5) and the pseudo-second-order kinetic model (Eq. 6) were fitted to the experimental data [25][26][27][28] .…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Removal of U(VI) from aqueous solution by Al 0 /Ni 0 bimetallic material

Ma,

Sang,

Zhang

et al. 2024

Preprint

View full text Add to dashboard Cite

The widespread use of nuclear energy has led to a growing concern over environmental pollution resulted from uranium which has prompted global attention on wastewater treatment. Al0 and Ni0 metals have been used by numerous researchers both domestically and internationally to removal U(VI) from aqueous solution due to their unique chemical properties. In this work, Al0/Ni0 bimetallic material (Al0/Ni0-BM) was prepared by synchronous liquid-phase reduction method. Due to the structure of bimetallic material and synergistic effect, it exhibited a higher removal rate compared with single zero valent metal. The uranium removal rate was 98.90%, well-fitting with the pseudo-second-order kinetic model, reduction model and Langmuir isothermal adsorption model. The high removal performance was attributed to the electron transfer mechanism between material and U element and the adsorption effect of corresponding hydroxides. The thermodynamic parameters demonstrated that the adsorption of U(VI) on the Al0/Ni0-BM was an endothermic and spontaneous process controlled by physical and chemical adsorptions. In conclusion, Al0/Ni0-BM showed an excellent potential for understanding U(VI) removal from aqueous solution by zero valent bimetallic materials.

show abstract

“…Many manufacturing process including crosslinking, precipitation, and electrodeposition are used to produce MCCs with different structures including beads, films, nanoparticles, fibers, microspheres, microcapsules, etc. [ 10 , 11 , 12 , 13 , 14 , 15 , 16 ]. Electrodeposition stands out from the rest, as it offers the advantage that assembly of stimuli-responsive chitosan can be triggered by electrical signals with exquisite spatial and temporal control [ 6 , 8 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Combination of Micelle Collapse and CuNi Surface Dissolution for Electrodeposition of Magnetic Freestanding Chitosan Film

et al. 2022

View full text Add to dashboard Cite

Magnetic chitosan hydrogel has aroused immense attention in recent years due to their biomedical significance and magnetic responsiveness. Here, A new electrodeposition method is reported for the fabrication of a novel CuNi-based magnetic chitosan freestanding film (MCFF) in an acidic chitosan plating bath containing SDS-modified CuNi NPs. Contrary to chitosan’s anodic and cathodic deposition, which typically involves electrochemical oxidation, the synthetic process is triggered by coordination of chitosan with Cu and Ni ions in situ generated by the controlled surface dissolution of the suspended NPs with the acidic plating bath. The NPs provide not only the ions required for chitosan growth but also become entrapped during electrodeposition, thereby endowing the composite with magnetic properties. The obtained MCFF offers a wide range of features, including good mechanical strength, magnetic properties, homogeneity, and morphological transparency. Besides the fundamental interest of the synthesis itself, sufficient mechanical strength ensures that the hydrogel can be used by either peeling it off of the electrode or by directly building a complex hydrogel electrode. Its fast and easy magnetic steering, separation and recovery, large surface area, lack of secondary pollution, and strong chelating capability could lead to it finding applications as an electrochemical detector or adsorbent.

show abstract

Magnetic chitosan microspheres: An efficient and recyclable adsorbent for the removal of iodide from simulated nuclear wastewater

Cited by 37 publications

References 71 publications

Supramolecular Structure of the β-Cyclodextrin Metal–Organic Framework Optimizes Iodine Stability and Its Co-delivery with l-Menthol for Antibacterial Applications

Supramolecular Structure of the β-Cyclodextrin Metal–Organic Framework Optimizes Iodine Stability and Its Co-delivery with l-Menthol for Antibacterial Applications

Removal of U(VI) from aqueous solution by Al 0 /Ni 0 bimetallic material

Combination of Micelle Collapse and CuNi Surface Dissolution for Electrodeposition of Magnetic Freestanding Chitosan Film

Contact Info

Product

Resources

About