Synthesis of Nanocrystalline CeO₂ with High Surface Area and Mesoporosity Using Template-Assisted Precipitation Method

Thi Thuy Tran1,2, , Duy Hieu Nguyen1, Thanh Huyen Vuong1,2
1 Hanoi University of Science and Technology – No. 1, Dai Co Viet Str., Hai Ba Trung, Ha Noi, Viet Nam
2 Leibniz-Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany

Main Article Content

Abstract

Nanocrystalline ceria with high surface area and mesoporosity was prepared by template-assisted precipitation method. The method of preparation was facile, using low-cost reagents and could be performed on a large scale. Cerium oxide support was characterized by Brunauer – Emmett – Teller (BET), X-ray diffraction (XRD) and transmission electron microscopy (TEM) techniques. The optimal conditions for cerium oxide synthesis were using cerium nitrate precursor, adjusting the final pH solution to 11.4 by NH₄OH and ethylene diamine (EDA) and calcination at 550 °C in air for 3 hours. With these conditions, nanocrystalline CeO₂ was obtained with high surface area of 159.5 m²/g.

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References

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