Controlled fabrication of flower-like α-zirconium phosphate for the efficient removal of radioactive strontium from acidic nuclear wastewater

Abstract

A novel flower-like α-ZrP adsorbent was prepared by a simple one-step solid-state method, and it exhibited exceptional Sr(ii) adsorption capacity, up to 293.34 mg g−1.

Preparation of Zirconium Phosphate Nanomaterials and Their Applications as Inorganic Supports for the Oxygen Evolution Reaction

“…ZrP has also been prepared with a flower-like morphology by a solid-state synthesis [ 62 ]. For this, ZrOCl 2 ·8H 2 O is mixed Na 3 PO 4 and ground together for 50 min.…”

Revisiting the Old and Golden Inorganic Material, Zirconium Phosphate: Synthesis, Intercalation, Surface Functionalization, and Metal Ion Uptake

“…65 To avoid the excess use of H 3 PO 4 and complexing agents, Mu et al in 2017, reported a low-cost solidstate methodology for the synthesis of flower-shaped α-ZrP. 66 In an archetypical procedure, 16 g of ZrOCl 2 •8H 2 O after ground with 5 mmol of Na 3 PO 4 was transferred into a teflon lined autoclave operated at 80 °C for 96 h. The product is obtained as a white powder, and exhibits better stability in acidic and radioactive environments. Time-dependent experimental results indicate the impact of reaction time on the morphology of the particles.…”

“…21,46,54,66−68 The direct exchange of ions with smaller hydrated radii such as Na + , K + , and Ca 2+ proceeds smoothly. [22][23][24]66,67,95 It was well established that the intercalation of alkali metal cations such as Li + , Na + , and K + occurs in two stages:…”

“…nanoflowers, synthesized by a low-cost solid-state method. 66 Apart from being stable toward an acidic environment and a radiation dose of 500 kGy, the flower-shaped α-ZrP exhibits a high surface area of 224 m 2 g −1 . The thermodynamic, kinetic, and mechanistic details of the adsorption have been demonstrated.…”

“…Though Pica et al reported a mild and faster sol–gel route for the synthesis of nanocrystalline ZrP, this method used a 4–6 fold excess of phosphoric acid . To avoid the excess use of H 3 PO 4 and complexing agents, Mu et al in 2017, reported a low-cost solid-state methodology for the synthesis of flower-shaped α-ZrP . In an archetypical procedure, 16 g of ZrOCl 2 ·8H 2 O after ground with 5 mmol of Na 3 PO 4 was transferred into a teflon lined autoclave operated at 80 °C for 96 h. The product is obtained as a white powder, and exhibits better stability in acidic and radioactive environments.…”