Mechanistic study on boron adsorption and isotopic separation with magnetic magnetite nanoparticles

Chen, Tao; Lyu, Jiafei; Wang, Qingfeng; Bai, Peng; Wu, Ying; Guo, Xianghai

doi:10.1007/s10853-020-05546-x

Cited by 16 publications

(3 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Their ratio is determined by the reduction level [ 56 ]. The O1s XPS spectra of Fe 3 O 4 phase displayed two peaks centered at 530.3 and 532.1 eV, which are attributed to Lo (Fe–O–Fe) and OHo (Fe–O–H), respectively [ 61 ]. Reduction of hematite to magnetite shifted the BE of Lo type from 529.6 to 530.4 eV, reflecting a decrease of their redox reactivity ( Table 6 ).…”

Section: Resultsmentioning

confidence: 99%

Core-Shell Fe2O3@La1−xSrxFeO3−δ Material for Catalytic Oxidations: Coverage of Iron Oxide Core, Oxygen Storage Capacity and Reactivity of Surface Oxygens

et al. 2021

View full text Add to dashboard Cite

A series of Fe2O3@LSF (La0.8Sr0.2FeO3−δ perovskite) core-shell materials (CSM) was prepared by infiltration of LSF precursors gel containing various complexants and their mixtures to nanocrystalline aggregates of hematite followed by thermal treatment. The content of LSF phase and amount of carboxyl groups in complexant determine the percent coverage of iron oxide core with the LSF shell. The most conformal coating core-shell material was prepared with citric acid as the complexant, contained 60 wt% LSF with 98% core coverage. The morphology of the CSM was studied by HRTEM-EELS combined with SEM-FIB for particles cross-sections. The reactivity of surface oxygen species and their amounts were determined by H2-TPR, TGA-DTG, the oxidation state of surface oxygen ions by XPS. It was found that at complete core coverage with perovskite shell, the distribution of surface oxygen species according to redox reactivity in CSM resemble pure LSF, but its lattice oxygen storage capacity is 2–2.5 times higher. At partial coverage, the distribution of surface oxygen species according to redox reactivity resembles that in iron oxide.

show abstract

Section: Resultsmentioning

confidence: 99%

Core-Shell Fe2O3@La1−xSrxFeO3−δ Material for Catalytic Oxidations: Coverage of Iron Oxide Core, Oxygen Storage Capacity and Reactivity of Surface Oxygens

et al. 2021

View full text Add to dashboard Cite

show abstract

“…9). According to previous knowledge [38,79,[81][82][83], the trigonal borate geometry is more stable with the heavier boron isotope ( 11 B), whereas the tetrahedral borate geometry prefers the lighter boron isotope ( 10 B). Therefore, resulting in these geometric compositions and isotopic preferences of the borates, the possibility of B(OH) − 4 formation is higher in EBA liquid waste than in NBA liquid waste.…”

Section: Chemical and Geometrical Characterizations Of Ebaand Nba-liq...mentioning

confidence: 99%

The geochemical role of B-10 enriched boric acid in cemented liquid radioactive wastes

Rostamiparsa

Tolnai

Czömpöly

et al. 2023

J Radioanal Nucl Chem

View full text Add to dashboard Cite

Boric acid is a significant radioactive waste generated during the operation of nuclear power plants. Cementitious materials have been widely studied for the immobilization of boric acid. The generally used natural boric acid has been replaced by enriched boric acid for geochemical reasons and are expected to have varied behaviors in cementitious matrices. Results showed that simulated enriched/natural boric acid liquid wastes mostly contain boron in $${\mathrm{B}(\mathrm{OH})}_{4}^{-}$$ B ( OH ) 4 - and $${{\mathrm{B}}_{5}{\mathrm{O}}_{6}(\mathrm{OH})}_{4}^{-}$$ B 5 O 6 ( OH ) 4 - ionic forms, but the mass ratio of these species is higher in enriched boric acid solutions. In function with the concentration of enriched/natural boric acid, the solidified cementitious materials show different mineralogy.

show abstract

“…The development and investigation of efficient boron removal processes from aqueous solutions have become a crucial task due to the increasing boron concentration in surface and groundwater, as well as the need to treat seawater in desalination plants and wastewater from industries using boric acid as raw material [ 24 , 25 , 26 ]. The major challenge in selectively removing boron lies in the fact that it exists in water in the forms of various chemical species and that their concentrations vary from one region to another [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Effective Removal of Boron from Aqueous Solutions by Inorganic Adsorbents: A Review

Lou,

Yohai,

Boada

et al. 2023

Molecules

View full text Add to dashboard Cite

Increasing levels of boron in water exceeding acceptable thresholds have triggered concerns regarding environmental pollution and adverse health effects. In response, significant efforts are being made to develop new adsorbents for the removal of boron from contaminated water. Among the various materials proposed, inorganic adsorbents have emerged as promising materials due to their chemical, thermal, and mechanical stability. This review aims to comprehensively examine recent advances made in the development of inorganic adsorbents for the efficient removal of boron from water. Firstly, the adsorption performance of the most used adsorbents, such as magnesium, iron, aluminum, and individual and mixed oxides, are summarized. Subsequently, diverse functionalization methods aimed at enhancing boron adsorption capacity and selectivity are carefully analyzed. Lastly, challenges and future perspectives in this field are highlighted to guide the development of innovative high-performance adsorbents and adsorption systems, ultimately leading to a reduction in boron pollution.

show abstract

Mechanistic study on boron adsorption and isotopic separation with magnetic magnetite nanoparticles

Cited by 16 publications

References 56 publications

Core-Shell Fe2O3@La1−xSrxFeO3−δ Material for Catalytic Oxidations: Coverage of Iron Oxide Core, Oxygen Storage Capacity and Reactivity of Surface Oxygens

Core-Shell Fe2O3@La1−xSrxFeO3−δ Material for Catalytic Oxidations: Coverage of Iron Oxide Core, Oxygen Storage Capacity and Reactivity of Surface Oxygens

The geochemical role of B-10 enriched boric acid in cemented liquid radioactive wastes

Effective Removal of Boron from Aqueous Solutions by Inorganic Adsorbents: A Review

Contact Info

Product

Resources

About