Iron triad nanomaterials and their sustainable application in the environment

Zhang, Qiuya; Zhou, Wei; Cui, Yue; Lyu, Chaojie; Liu, Tong; Zhang, Rongzun; Zhang, Rui; Zheng, Jinlong; Shi, Zhaoliang; Lu, Chengxing; Guo, Lin

doi:10.1039/c7en01024a

Cited by 9 publications

(4 citation statements)

References 66 publications

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“…In recent years, special attention has been paid to nanocomposites based on metal oxides or ferrites, interest in which is due to the high potential for their use as catalysts, the basis for carriers of drugs, sensors and adsorbents of pollutants, and waste water treatment [ 1 , 2 , 3 , 4 , 5 ]. The wide range of their application is based on the possibility of obtaining nanostructured composites with large specific surface area, functional groups, and resistance to degradation [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Efficiency of Detection and Capture of Manganese in Aqueous Solutions of FeCeOx Nanocomposites Doped with Nb2O5

Kozlovskiy

Egizbek

Здоровец

et al. 2020

Sensors

293

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: The main purpose of this work is to study the effectiveness of using FeCeOx nanocomposites doped with Nb2O5 for the purification of aqueous solutions from manganese. X-ray diffraction, energy–dispersive analysis, scanning electron microscopy, vibrational magnetic spectroscopy, and mössbauer spectroscopy were used as research methods. It is shown that an increase in the dopant concentration leads to the transformation of the shape of nanoparticles from spherical to cubic and rhombic, followed by an increase in the size of the nanoparticles. The spherical shape of the nanoparticles is characteristic of a structure consisting of a mixture of two phases of hematite (Fe2O3) and cerium oxide CeO2. The cubic shape of nanoparticles is typical for spinel-type FeNbO4 structures, the phase contribution of which increases with increasing dopant concentration. It is shown that doping leads not only to a decrease in the concentration of manganese in model solutions, but also to an increase in the efficiency of adsorption from 11% to 75%.

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Section: Introductionmentioning

confidence: 99%

Evaluation of the Efficiency of Detection and Capture of Manganese in Aqueous Solutions of FeCeOx Nanocomposites Doped with Nb2O5

Kozlovskiy

Egizbek

Здоровец

et al. 2020

Sensors

293

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“…Zuschriften and 44.038 8.B ased on the diffraction peak at 35.68 8 of TS-SnO 2 @Fe 2 O 3 (MOF), the coated layer was assigned to the rhombohedral a-Fe 2 O 3 phase (JCPDS no.3 3-0664), [16] which was further confirmed by ACTEM ( Figure 1f). Thermogravimetric analysis (TGA) of TS-SnO 2 @MIL-100(Fe) (Figure 2b)i ndicated three mass loss events:1 )removal of solvent molecules,2)loss of guest molecules and degradation of small organics,and 3) ligand degradation and formation of final product a-Fe 2 O 3 after 350 8 8C.…”

Section: Angewandte Chemiementioning

confidence: 62%

Hollow Multi‐Shelled Structure with Metal–Organic‐Framework‐Derived Coatings for Enhanced Lithium Storage

et al. 2019

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Herein, we present heterogeneous hollowm ultishelled structures (HoMSs) prepared by exploiting the properties of the metal-organic framework (MOFs) casing.Through accurately controlling the transformation of MOF layer into different heterogeneous casings,w ec an precisely design HoMSs of SnO 2 @Fe 2 O 3 (MOF) and SnO 2 @FeO x -C(MOF), which not only retain properties of the original SnO 2 -HoMSs, but also structural information from the MOFs.T ested as anode materials in LIBs,S nO 2 @Fe 2 O 3 (MOF)-HoMSs demonstrate superior lithium-storage capacity and cycling stability to the original SnO 2 -HoMSs,w hich can be attributed to the topological features from the MOF casing.M aking as harp contrast to the electrodes of SnO 2 @Fe 2 O 3 (particle)-HoMSs fabricated by hydrothermal method, the capacity retention after 100 cycles for the SnO 2 @Fe 2 O 3 (MOF)-HoMSs is about eight times higher than that of the SnO 2 @Fe 2 O 3 (particle)-HoMS.Benefiting from the high theoretical capacity,l ow cost and wide availability,S nO 2 -based materials have attracted great research interest as high-performance anode materials for lithium-ion batteries (LIBs). [1] However,SnO 2 anode materials still suffer from poor capacity retention over extended charge-discharge cycling due to the large volume inflation (> 300 %) caused by the alloying reaction with Li to form Li 4.4 Sn. [2] To solve this problem, three approaches have been proposed:1 )preparing SnO 2 -based electrode materials with hollow or porous nanostructures [3] which can buffer the stress of the volume expansion. Of these,t he hollow multi-shelled structures,a bbreviated as HoMS by Wangsg roup, [4] shows promising results;2)Coating aphysical buffer layer of carbon or silica on the surface of SnO 2 can protect it from collapse during long-term reactions that will greatly enhance the cycling stability [5] and reversible capacity; [6] 3) Coating aphysical and chemical buffer layer of heterogeneous metal oxide on the surface of the SnO 2 -based electrode material, such as SnO 2 @Fe 2 O 3 and SnO 2 @Co 3 O 4 , [7] can greatly enhance the structural stability and also improve the storage capacity. However,t here is no general approach to achieve the above three structural designs at the same time.HoMSs have attracted alot of attention for their excellent performance in energy density and capacity of lithium-ion batteries (LIBs). [8] Compared with the conventional solidelectrode structures,H oMSs are ideal buffer structures to improve the structure stability of electrodes,b ecause their hollow interior space can buffer the stress of the volume expansion caused by Li + -insertion/extraction process. [9] Thec oating approach is reported as aw idely usable and efficient method for modifying electrode performance for LIBs. [10] Especially,m etal-organic frameworks (MOFs) can easily combine with other materials to give heterogeneous structures,which makes MOFs promising coating material in catalysis,s ensors,a nd gas storage and separation. [11] Additionally,a sthe highly ordered peri...

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“…Based on the diffraction peak at 35.6° of TS‐SnO 2 @Fe 2 O 3 (MOF), the coated layer was assigned to the rhombohedral α‐Fe 2 O 3 phase (JCPDS no. 33‐0664), which was further confirmed by ACTEM (Figure f). Thermogravimetric analysis (TGA) of TS‐SnO 2 @MIL‐100(Fe) (Figure b) indicated three mass loss events: 1) removal of solvent molecules, 2) loss of guest molecules and degradation of small organics, and 3) ligand degradation and formation of final product α‐Fe 2 O 3 after 350 °C.…”

Section: Methodsmentioning

confidence: 94%

Hollow Multi‐Shelled Structure with Metal–Organic‐Framework‐Derived Coatings for Enhanced Lithium Storage

et al. 2019

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Herein, we present heterogeneous hollow multi‐shelled structures (HoMSs) prepared by exploiting the properties of the metal–organic framework (MOFs) casing. Through accurately controlling the transformation of MOF layer into different heterogeneous casings, we can precisely design HoMSs of SnO2@Fe2O3(MOF) and SnO2@FeOx‐C(MOF), which not only retain properties of the original SnO2‐HoMSs, but also structural information from the MOFs. Tested as anode materials in LIBs, SnO2@Fe2O3 (MOF)‐HoMSs demonstrate superior lithium‐storage capacity and cycling stability to the original SnO2‐HoMSs, which can be attributed to the topological features from the MOF casing. Making a sharp contrast to the electrodes of SnO2@Fe2O3 (particle)‐HoMSs fabricated by hydrothermal method, the capacity retention after 100 cycles for the SnO2@Fe2O3 (MOF)‐HoMSs is about eight times higher than that of the SnO2@Fe2O3 (particle)‐HoMS.

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Iron triad nanomaterials and their sustainable application in the environment

Abstract: It reviews the most recent progress in detection, treatment, and recycling of contaminants mainly from wastewater using iron triad nanomaterials.

Cited by 9 publications

References 66 publications

Evaluation of the Efficiency of Detection and Capture of Manganese in Aqueous Solutions of FeCeOx Nanocomposites Doped with Nb2O5

Evaluation of the Efficiency of Detection and Capture of Manganese in Aqueous Solutions of FeCeOx Nanocomposites Doped with Nb2O5

Hollow Multi‐Shelled Structure with Metal–Organic‐Framework‐Derived Coatings for Enhanced Lithium Storage

Hollow Multi‐Shelled Structure with Metal–Organic‐Framework‐Derived Coatings for Enhanced Lithium Storage

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