Polyaniline/attapulgite-supported Nanoscale Zero-valent Iron for Removing Methyl Orange in Aqueous Solution

doi:10.11944/j.issn.1000-0518.2016.01.150224

Chinese Journal of Applied Chemistry ›› 2016, Vol. 33 ›› Issue (1): 92-97.DOI: 10.11944/j.issn.1000-0518.2016.01.150224

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Polyaniline/attapulgite-supported Nanoscale Zero-valent Iron for Removing Methyl Orange in Aqueous Solution

XU Hui(),TANG Jin,LI Chunlei,CHEN Yong

College of Petrochemical Technology,Lanzhou University of Technology,Lanzhou 730050,China

Received:2015-07-02 Accepted:2015-10-22 Published:2016-01-05 Online:2016-01-05
Contact: XU Hui
Supported by:
Supported by the National Natural Science Foundation of China(No.51503092)

Abstract

Abstract:

In this paper, a kind of polyaniline/attapulgite(PANI/ATP)-supported nano sized zero valence iron(nZVI) composites were synthesized by the liquid-phase chemical reduction method. The as-prepared nZVI/PANI/ATP nanocomposites were characterized by scanning electron microscopy(SEM), transmission electron microscopy(TEM) and X-ray photoelectron energy spectrum analyzer(XPS). The effects of the degradation time and pH on the adsorption of methyl orange on synthetic materials were investigated. Kinetic analysis and degradation mechanism were discussed. The results show that the nZVI/PANI/ATP composites can effectively degrade methyl orange over a wide range of pH and keep degradation activity in a long storage term. It is shown that more than 95.8% of methyl orange with an initial concentration of 20 mg/L and volume of 50 mL is removed from the aqueous solution after 30 min when the catalysts amount is 1 g/L. The process of the degradation of methyl orange was well described by the pseudo-second order reaction kinetics.

Key words: nano-iron, polyaniline, attapulgite, methyl orange, degradation

XU Hui, TANG Jin, LI Chunlei, CHEN Yong. Polyaniline/attapulgite-supported Nanoscale Zero-valent Iron for Removing Methyl Orange in Aqueous Solution[J]. Chinese Journal of Applied Chemistry, 2016, 33(1): 92-97.

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Polyaniline/attapulgite-supported Nanoscale Zero-valent Iron for Removing Methyl Orange in Aqueous Solution

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