Synthesis and Characterization of Nano-Conducting Copolymer Composites: Efficient Sorbents for Organic Pollutants
作者： Khadija Emran , Shimaa Ali , Aishah Al-Oufi
DOI: 10.3390/MOLECULES22050772
关键词: Composite material 、 Copolymer 、 Thermal analysis 、 Sorption 、 Polymerization 、 Polypyrrole 、 Thermal stability 、 Monomer 、 Polyaniline 、 Materials science
摘要: Nano-conducting copolymers of aniline (ANI) and pyrrole (Py) with silica different starting monomer ratios are prepared by oxidative chemical polymerization. X-ray diffraction (XRD) data showed that polyaniline (PANI) is the predominant phase in copolymer composites a higher ANI ratio while polypyrrole (PPy) major for other samples. Transmission scanning electron microscope images ascertained XRD results where hexagonal-shaped particles assigned to PANI/SiO2 poly(9ANI-co-1Py)/SiO2 samples; cauliflower morphology can be observed PPy/SiO2, poly(1ANI-co-9Py)/SiO2, poly(1ANI-co-2Py)/SiO2, poly(1ANI-co-1Py)/SiO2 One-dimensional nano-fibers obtained using 2ANI:1Py during synthesis. Thermal analysis copolymerization increases thermal stability as compared PPy/SiO2 composites. All samples were applied sorbents Congo red dye from aqueous solutions. It was found sorption capacity value affected ratio; poly(2ANI-co-1Py)/SiO2 has highest capacity; qm 142.9 mg g−1 due its highly-stabilized nano-structure.
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