1. Preparation of Polyaniline/Emulsion Microsphere Composite for Efficient Adsorption of Organic Dyes
- Author
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Linlin Du, Limin Zang, Chuanbai Yu, Yuanli Liu, Nuo Liang, Liushuo Song, Si Wu, Tsuyoshi Minami, Xu Xu, and Peng Gao
- Subjects
Polymers and Plastics ,Dispersity ,Composite number ,Langmuir adsorption model ,Emulsion polymerization ,General Chemistry ,Article ,polyaniline ,lcsh:QD241-441 ,chemistry.chemical_compound ,symbols.namesake ,Adsorption ,lcsh:Organic chemistry ,chemistry ,Chemical engineering ,methyl orange ,adsorption ,Polyaniline ,Methyl orange ,symbols ,In situ polymerization ,emulsion microsphere - Abstract
Surface-functionalized polymeric microspheres have wide applications in various areas. Herein, monodisperse poly(styrene&ndash, methyl methacrylate&ndash, acrylic acid) (PSMA) microspheres were prepared via emulsion polymerization. Polyaniline (PANI) was then coated on the PSMA surface via in situ polymerization, and a three-dimensional (3D) structured reticulate PANI/PSMA composite was, thus, obtained. The adsorption performance of the composite for organic dyes under different circumstances and the adsorption mechanism were studied. The obtained PANI/PSMA composite exhibited a high adsorption rate and adsorption capacity, as well as good adsorption selectivity toward methyl orange (MO). The adsorption process followed pseudo-second-order kinetics and the Langmuir isotherm. The maximum adsorption capacity for MO was 147.93 mg/g. After five cycles of adsorption&ndash, desorption, the removal rate remained higher than 90%, which indicated that the adsorbent has great recyclability. The adsorbent materials presented herein would be highly valuable for the removal of organic dyes from wastewater.
- Published
- 2020
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