Synthesis of ZIF-11- effect of source  of zinc salts  on the structure

Nguyen Thi Luy; Dang Cong Vu; Nguyen Thi Anh Thu; Tuong Kieu Lien; Hoang Van Duc

doi:10.51316/jca.2021.013

Authors

Nguyen Thi Luy Hue University College of Education
Dang Cong Vu Hue University College of Education
Nguyen Thi Anh Thu Hue University College of Education
Tuong Kieu Lien Hue University College of Education
Hoang Van Duc Hue University College of Education

DOI:

https://doi.org/10.51316/jca.2021.013

Keywords:

ZIF-11, synthesis, structure, adsorption, iodine

Abstract

In this paper, ZIF-11 material was synthesized from benzimidazole and different zinc salt sources at room temperature. The obtained samples were characterized using XRD, SEM, FTIR and TGA measurements. The results showed that the synthesized materials had nano-size, and uniformity with the sharp dodecahedrons structure of ZIF-11. Zinc sources had an influence on the size and nature of the ZIF-11 crystal. The average crystalline size of the nanoparticles calculated by Scherrer equation were 85.5 nm for sample of zinc nitrate, 91.9 nm for sample of zinc chloride and 111.5 nm for sample of zinc acetate. The obtained samples had high thermal stability (> 460 °C). The adsorption capacity of the synthesized materials for iodine from aqueous solution was very high (236 mg/g).

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