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. 2015 Dec;10(1):474.
doi: 10.1186/s11671-015-1180-0. Epub 2015 Dec 9.

Invention of Hollow Zirconium Tungesto-Vanadate at Nanotube Morphological Structure for Radionuclides and Heavy Metal Pollutants Decontamination from Aqueous Solutions

M F Elkady  1   2 , H Shokry Hassan  3
Affiliations

Invention of Hollow Zirconium Tungesto-Vanadate at Nanotube Morphological Structure for Radionuclides and Heavy Metal Pollutants Decontamination from Aqueous Solutions

M F Elkady et al. Nanoscale Res Lett. 2015 Dec.

Abstract

Zirconium tungesto-vanadate cation exchange material was successfully architectured at open ended nanotubes morphological structure in the presence of polyvinyl alcohol as a stabilizing agent using microwave route. The ion exchange capacity (IEC) of the material was recorded as 4.8 meq/g of about 640 m(2)/g for a specific surface area. The x-ray diffraction pattern of the material implies its crystallinity. Both scanning and transmission electron microscopes identified the average aspect ratio of the architectured nanotubes as 6.5 and its hollow structure. The material posed 96.4 % cadmium ion decontamination within 90 min compared with 84 % strontium decontamination at the same time.

Keywords: Cation exchanger; Microwave technology; Nanotube; Strontium ions; Zirconium tungesto-vanadate.

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Figures

Fig. 1
Fig. 1
Microwave setup for hollow nanotube zirconium tungesto-vanadate production (1- microwave oven, 2- syringe pump for feeding sodium tungestate solution, 3- syringe pump for feeding sodium meta-vanadate solution, 4- stainless steel reactor)
Fig. 2
Fig. 2
XRD of nanotube zirconium tungesto-vanadate cation exchange material
Fig. 3
Fig. 3
SEM of nanotube zirconium tungesto-vanadate cation exchange material
Fig. 4
Fig. 4
TEM of hollow nanotube zirconium tungesto-vanadate cation exchange material
Fig. 5
Fig. 5
Sorption profiles of cadmium and strontium ions onto nanotube zirconium tungesto-vanadate cation exchange material
See this image and copyright information in PMC

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