Zirconium Oxide and Iron Zirconate Obtained from Citrus Pectin and Nitrates Applied in the Photo-fenton-like Process

Antoniazzi, Cristiane; Castro, Edilene Alcântara de; Anaissi, Fauze Jacó

doi:10.17807/orbital.v10i5.980

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The finding that the XRD patterns of all samples were different with respect to relative intensity indicated that the SiO 2 ratios induced these changes. The insertion of Fe 3+ ions into the zirconosilicate matrix was not detected as a new phase, because the avail-able concentration was considered low [20,21]. Moreover, The XRD pattern of Fe-Zr-O composite (Figure 1a-c) was similar to that of ZrO 2 , with only some minor differences in structure [15][16][17][18].…”

Section: Characterization Of the Synthesized Materialsmentioning

confidence: 99%

“…On the other hand, the isomorphous substitutions of various ions as metal dopants into the zeolitic frameworks have also attracted interest over the last decade [12][13][14][15][16][17][18][19]. These metal dopants can be incorporated into the zirconosilicates frameworks, either as guest species in a solid solution or as separate phases encapsulated in the zeolite frameworks [19][20][21]. It has been shown that the dopants lead to changing ion-exchange activities of zeolite materials, in which the isomorphous substitutions of some ions with others have different oxidation states through incorporations into tetrahedral positions [13,15].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis and Adsorption Behavior of Microporous Iron-Doped Sodium Zirconosilicate with the Structure of Elpidite

Elshehy

2021

Surfaces

View full text Add to dashboard Cite

Decontamination of water from radionuclides contaminants is a key priority in environmental cleanup and requires intensive effort to be cleared. In this paper, a microporous iron-doped zeolite-like sodium zirconosilicate (F@SZS) was designed through hydrothermal synthesis with various Si/Zr ratios of 5, 10, and 20, respectively. The synthesized materials of F@SZS materials were well characterized by various techniques such as XRD, SEM, TEM, and N2 adsorption–desorption measurements. Furthermore, the F@SZS-5 and F@SZS-10 samples had a crystalline structure related to the Zr–O–Si bond, unlike the F@SZS-20 which had an overall amorphous structure. The fabricated F@SZS-5 nanocomposite showed a superb capability to remove cesium ions from ultra-dilute concentrations, and the maximum adsorption capacity was 21.5 mg g–1 at natural pH values through an ion exchange mechanism. The results of cesium ions adsorption were found to follow the pseudo-first-order kinetics and the Langmuir isotherm model. The microporous iron-doped sodium zirconosilicate is described as an adsorbent candidate for the removal of ultra-traces concentrations of Cs(I) ions.

show abstract