A Facile Process for the Preparation of Three-Dimensional Hollow Zn(OH)2 Nanoflowers at Room Temperature

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• 作者：Ren Cai ; Dan Yang ; Liqing Zhang ; Liping Qiu ; Hao Liang ; Xigao Chen ; Sena Cansiz ; Zuxiao Zhang ; Shuo Wan ; Kimberly Stewart ; Qingyu Yan and Prof. Weihong Tan
• 刊名：Chemistry - A European Journal
• 出版年：2016
• 出版时间：August 1, 2016
• 年：2016
• 卷：22
• 期：32
• 页码：11143-11147
• 全文大小：3048K
• ISSN：1521-3765

文摘

A facile strategy has been developed to synthesize double-shelled Zn(OH)₂ nanoflowers (DNFs) at room temperature. The nanoflowers were generated via conversion of Cu₂O nanoparticles (NPs) using ZnCl₂ and Na₂S₂O₃ by a simple process. Outward diffusion of the Cu²⁺, produced by an oxidation process on the surface of NPs, and the inward diffusion of Zn²⁺ by coordination and migration, eventually lead to a hollow cavity in the inner NPs with a double-shelled 3D hollow flower shapes. The thickness of the inner and outer shells is estimated to be about 20 nm, and the thickness of nanopetals is about 7 nm. The nanoflowers have large surface areas and excellent adsorption properties. As a proof of potential applications, the DNFs exhibited an excellent ability to remove organic molecules from aqueous solutions.