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

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

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).


Keywords


ZIF-11; synthesis; structure; adsorption; iodine

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References


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

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