Selective adsorption of uranyl and potentially toxic metal ions at the core-shell MFe2O4-TiO2 (M=Mn, Fe, Zn, Co, or Ni) nanoparticles

Bian, Liang; Nie, Jianan; Jiang, Xiaoqiang; Song, Mianxin; Dong, Faqin; Shang, Liping; Hu, Deng; He, Huichao; Belzile, Nelson; Chen, Yuwei; Xu, Bing; Liu, Xiao‐Nan

doi:10.1016/j.jhazmat.2018.11.076

Cited by 33 publications

(7 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The spectrum of ZnFe 2 O 4 with different water contents in the precursor is shown in Figure c. The adsorption bands at 3424 and 1642 cm –1 correspond to the O–H vibration, which confirms the presence of hydroxyl groups on the surface . The −OH vibration peak intensified in the ZnFe 2 O 4 samples with higher water contents in the precursor solution, and the strongest absorption peak appeared in the ZnFe 2 O 4 spectrum (8 mL of H 2 O), implying an increase in hydroxyl groups on the surface of ZnFe 2 O 4 .…”

Section: Resultsmentioning

confidence: 88%

“…30 The amounts of oxygen-containing groups were proportional to the peak intensity. 31 The −OH vibration peak intensified in the ZnFe 2 O 4 samples with higher water contents in the precursor solution, and the strongest absorption peak appeared in the ZnFe 2 O 4 spectrum (8 mL of H 2 O), implying an increase in hydroxyl groups on the surface of ZnFe 2 O 4 . Two adsorption bands near 1300 and 1420 cm −1 were ascribed to CO stretching, which indicate trace amounts of residual ethylene glycol on the surface.…”

Section: The Impact Of Water Content In Precursor Solution Onmentioning

confidence: 92%

See 1 more Smart Citation

Tuning the Interfacial Properties of Spinels to Improve the Antimony Adsorption Ability

Guo

et al. 2021

Langmuir

View full text Add to dashboard Cite

Structure and interfacial properties are important factors that affect a spinel's adsorption performance. In this article, by changing the water content in a precursor during synthesis, the interfacial properties of normal and inverse spinels were tuned to improve Sb adsorption. The results showed that changing the water content did not alter the crystal structure of synthesized zinc ferrite (ZnFe 2 O 4 ) and cobalt ferrite (CoFe 2 O 4 ), but it had a significant effect on the crystallite size and the number of surface hydroxyl groups. For normal spinel ZnFe 2 O 4 and inverse spinel CoFe 2 O 4 , the crystallite size decreased while the surface hydroxyl groups increased when the water content gradually increased from 1 to 8 mL. Spinels with smaller crystallite size and more surface hydroxyl groups enhanced Sb adsorption. The adsorption capacity of ZnFe 2 O 4 and CoFe 2 O 4 for low concentrations of Sb(V) increased from 8.45 and 10.64 mg/g to 15.05 and 17.00 mg/g, respectively. This work has greatly improved the adsorption capacity of spinel materials through a simple tunable method and is expected to provide new ideas for the interfacial tuning of spinel materials, which shows great potential applications for wastewater treatment.

show abstract

Section: Resultsmentioning

confidence: 88%

Section: The Impact Of Water Content In Precursor Solution Onmentioning

confidence: 92%

Tuning the Interfacial Properties of Spinels to Improve the Antimony Adsorption Ability

Guo

et al. 2021

Langmuir

View full text Add to dashboard Cite

show abstract

“…Compared with undoped TiO 2 , Fig. 3 displayed small deviation in the bands positions under 1627 cm -À1 after the addition of Co and Fe ions indicating the introducing of Co and Fe ions in the TiO 2 lattice and formation of TieOeCo and TieOeFe network [53,60,61]. On the other hand, the intensity of the band at 666 cm -À1 enhanced after the addition of Fe 3 O 4 indicating the overlapping of this band with the absorption band that resulted from the FeeO band [48,62].…”

Section: Ftir Analysismentioning

confidence: 95%

“…In the spectra, broad peaks appeared at 3420, 1627 and 1382 cm À1 attributed to the stretching and bending vibrations of eOH and adsorbed water on the samples surface [41,53,54].…”

Section: Ftir Analysismentioning

confidence: 99%

Fe3O4/Co3O4–TiO2 S-scheme photocatalyst for degradation of organic pollutants and H2 production under natural sunlight

Abutalib

Alghamdi

Rajeh

et al. 2022

Journal of Materials Research and Technology

View full text Add to dashboard Cite

“…Nowadays, the heavy-metal pollutants discharged from industry are detrimental to the environment and human society. − As a notorious heavy-metal ion, hexavalent chromium (Cr(VI)) can cause cancer, pulmonary congestions, and liver damage. , Therefore, a variety of techniques such as adsorption, membrane separation, and photocatalytic reduction have been applied to remove harmful Cr(VI) ions. − The photocatalytic conversion of toxic Cr(VI) to innocuous Cr(III) under visible light is viewed as a promising approach due to its environmental friendliness and facile operation. , Numerous semiconductors have been reported for the removal of Cr(VI), including CdS, g-C 3 N 4 , and WO 3 . − However, most of the catalysts are limited by high cost, low efficiency, and slow reduction rate. , …”

Section: Introductionmentioning

confidence: 99%

Integration of MIL-101-NH₂ into Cellulosic Foams for Efficient Cr(VI) Reduction under Visible Light

Hao

Sun

et al. 2021

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

In this Article, a hybrid foam was fabricated through the integration of amine-functionalized Fe-MOF (MIL-101-NH2) into cellulosic matrix. The existence of enormous group linkages and ionic bonding interactions among the composite foam network leads to a uniform dispersion of MIL-101-NH2 and high affinity between the MOF and cellulose skeleton. As-prepared hybrid foams were utilized as photocatalysts to reduce toxic hexavalent chromium ions (Cr(VI)) under visible light. Optimal performance was observed over CM-1 (with a MIL-101-NH2 and nanocellulose mass ratio of 1:1). When compared to pure MOF nanoparticle counterparts, the CM-1 foam presented preferable and more efficient Cr(VI) removal performance. The reasons could be attributed to the hierarchal pore structure and uniform MOF loading. Moreover, the flexible foams could be easily separated from the solution and preserved more than 80% removal efficiency of Cr(VI) after 10 runs. This work would shed light on how to construct high-efficiency photocatalysts for environmental governance from sustainable materials.

show abstract

Selective adsorption of uranyl and potentially toxic metal ions at the core-shell MFe2O4-TiO2 (M=Mn, Fe, Zn, Co, or Ni) nanoparticles

Cited by 33 publications

References 75 publications

Tuning the Interfacial Properties of Spinels to Improve the Antimony Adsorption Ability

Tuning the Interfacial Properties of Spinels to Improve the Antimony Adsorption Ability

Fe3O4/Co3O4–TiO2 S-scheme photocatalyst for degradation of organic pollutants and H2 production under natural sunlight

Integration of MIL-101-NH₂ into Cellulosic Foams for Efficient Cr(VI) Reduction under Visible Light

Contact Info

Product

Resources

About

Selective adsorption of uranyl and potentially toxic metal ions at the core-shell MFe2O4-TiO2 (M=Mn, Fe, Zn, Co, or Ni) nanoparticles

Cited by 33 publications

References 75 publications

Tuning the Interfacial Properties of Spinels to Improve the Antimony Adsorption Ability

Tuning the Interfacial Properties of Spinels to Improve the Antimony Adsorption Ability

Fe3O4/Co3O4–TiO2 S-scheme photocatalyst for degradation of organic pollutants and H2 production under natural sunlight

Integration of MIL-101-NH2 into Cellulosic Foams for Efficient Cr(VI) Reduction under Visible Light

Contact Info

Product

Resources

About

Integration of MIL-101-NH₂ into Cellulosic Foams for Efficient Cr(VI) Reduction under Visible Light