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Journal of Nanomaterials
Volume 2013 (2013), Article ID 797082, 8 pages
Research Article

3D Cu(OH)2 Hierarchical Frameworks: Self-Assembly, Growth, and Application for the Removal of TSNAs

1China National Tobacco Quality Supervision & Test Center, No. 2 Fengyang Street, Zhengzhou High & New Technology Industries Development Zone, Zhengzhou 450001, China
2Shandong Tobacco Quality Supervision and Testing Station, Xinluo Street, High & New Technology Industries Development Zone, Jinan 250101, China

Received 25 March 2013; Accepted 7 May 2013

Academic Editor: Zhenhui Kang

Copyright © 2013 Hongwei Hou et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The 3D hierarchical Cu(OH)2 frameworks were successfully prepared via a simple and surfactant-free chemical self-assembled route. The frameworks were characterized by X-ray powder diffraction, field-emission scanning electron microscopy, and energy dispersive X-ray spectroscopy. The experimental investigations suggest that certain concentrations of NaOH and K2S2O8 are required for the self-assembly and growth of Cu(OH)2. In addition, the orthorhombic crystal structure of Cu(OH)2 may prove to be ideal for the structural development of the final 3D Cu(OH)2 hierarchical frameworks. The nitrogen adsorption and desorption measurements indicate that the Cu(OH)2 frameworks possess a Brunauer-Emmett-Teller surface area of approximately 163.76 m2 g−1. Barrett-Joyner-Halenda measurement of the pore size distribution, as derived from desorption data, presented a distribution centered at 3.05 nm. Additionally, 10 mg of the Cu(OH)2 framework can remove 47% of the N-nitrosonornicotine and 53% of the 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone in cigarette smoke. These results indicate that the Cu(OH)2 frameworks may be a potential adsorbent for removing tobacco-specific N-nitrosamines (TSNAs) from cigarette smoke.