Stable Organic鈥揑norganic Hybrid of Polyaniline/伪-Zirconium Phosphate for Efficient Removal of Organic Pollutants in Water Environment
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- 作者：Lei Wang ; Xi-Lin Wu ; Wei-Hong Xu ; Xing-Jiu Huang ; Jin-Huai Liu ; An-Wu Xu
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2012
- 出版时间：May 23, 2012
- 年：2012
- 卷：4
- 期：5
- 页码：2686-2692
- 全文大小：356K
- 年卷期：v.4,no.5(May 23, 2012)
- ISSN：1944-8252
文摘
In this article, organic鈥搃norganic hybrid materials of polyaniline/伪-zirconium phosphate (PANI/伪-ZrP) was synthesized by in situ oxidative polymerization reaction and characterized by Fourier transformed infrared (FTIR), field-emission scanning electron microscopic (FE-SEM) and X-ray diffraction (XRD). The results showed that polyaniline (PANI) was successfully grown on the surface of 伪-zirconium phosphate (伪-ZrP) nanoplates. The PANI/伪-ZrP nanocomposites were further applied to remove methyl orange (MO), which was used as a model of organic pollutants in aqueous solution. A synergistic effect of PANI and 伪-ZrP on promoting the adsorption removal of MO was observed. The PANI/伪-ZrP nanocomposites exhibited excellent maximum adsorption capacity toward MO (377.46 mg g鈥?), which is superior to that of PANI nanotubes (254.15 mg g鈥?) and much higher than that of many other adsorbents. The adsorption isotherms of MO can be well-fitted with the Langmuir model and the adsorption kinetics follows the pseudo-second-order model. MO adsorption decreased with increasing solution pH at pH > 4.0 implying that MO adsorption on PANI/伪-ZrP may via electrostatic interactions between amine and imine groups on the surface of PANI/伪-ZrP and MO molecules. This study implies that the hybrid materials of PANI/伪-ZrP can be suggested as potential adsorbents to remove organic dyes from large volumes of aqueous solutions.