Desert Rose‐Shaped Zircon Synthesized by Low‐Temperature Hydrothermolysis
This study has presented synthesis, characterization, and formation mechanism of a kind of novel porous zircon with desert rose‐shaped morphology, which was hydrothermally fabricated by a two‐step quasi‐in situ reaction in a system of silica hydrogel and well‐dispersed ZrO2 precursor microspheres. The micro–mesoporous zircon product possesses a sole crystalline phase of hydroxyl‐fluorinated ZrSiO4 without unreacted ZrO2 or SiO2 in the final resultant. It has a specific surface area exceeding 120 m2/g and can maintain more than 50% micro‐mesoporic pores after calcination at 800°C due to its magnificent thermal stability. A four‐stage formation mechanism has been proposed to elucidate the process of quasi‐in situ crystallization and growth for the rose‐shaped zircon.
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Document Type: Research Article
Publication date: May 1, 2015