Preparation of Polyaniline/Emulsion Microsphere Composite for Efficient Adsorption of Organic Dyes

Authors :: Linlin Du
Limin Zang
Chuanbai Yu
Yuanli Liu
Nuo Liang
Liushuo Song
Si Wu
Tsuyoshi Minami
Xu Xu
Peng Gao
Source :: Polymers, Volume 12, Issue 1, Polymers, Vol 12, Iss 1, p 167 (2020)
Publication Year :: 2020
Publisher :: Multidisciplinary Digital Publishing Institute, 2020.
Abstract: Surface-functionalized polymeric microspheres have wide applications in various areas. Herein, monodisperse poly(styrene&ndash<br />methyl methacrylate&ndash<br />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<br />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.

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