Heterostructured Co0.5Mn0.5Fe2O4-polyaniline nanofibers: highly efficient photocatalysis for photodegradation of methyl orange

• Published in: The Korean journal of chemical engineering Vol. 36; no. 5; pp. 807 - 815
• Main Authors: Jung, Hong-Ryun, Kim, Kyung Nam, Lee, Wan-Jin
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.05.2019; Springer Nature B.V; 한국화학공학회
• Subjects: Biotechnology; Catalysis; Chemistry; Chemistry and Materials Science; Dyes; Electronic; Heat treatment; Heterojunctions; Industrial Chemistry/Chemical Engineering; Inorganic; Light irradiation; Magnetic properties; Materials (Organic; Materials Science; Morphology; Nanofibers; Organic chemistry; Photocatalysis; Photocatalysts; Photodegradation; Polyanilines; Thin Films; 화학공학; Hollow-structured; Electrospinning; Photocatalytic; Magnetically Separable; Heterojunction
• ISSN: 0256-1115; 1975-7220
• DOI: 10.1007/s11814-019-0258-2

1D hollow Co 0.5 Mn 0.5 Fe 2 O 4 -PANI nanofibers were synthesized through sequential processes of electrospinning, heat treatment in air, and chemical polymerization of polyaniline. The morphology and photocatalytic properties of heterostructured Co 0.5 Mn 0.5 Fe 2 O 4 -PANI as photocatalysts were investigated by SEM, TEM, XRD, TGA, and photocatalysis experiments of methyl orange under visible-light irradiation. The hollow Co 0.5 Mn 0.5 Fe 2 O 4 -PANI nanofibers showed a high photocatalytic degradation efficiency of 92% within 120 min and a kinetic constant of 115-times higher than hollow Co 0.5 Mn 0.5 Fe 2 O 4 nanofibers. These high photocatalytic properties are attributed to both unique 1D hollow nanofiber morphology with macroporous hollow core, PANI/Co 0.5 Mn 0.5 Fe 2 O 4 /PANI shell and the heterojunction structure composed of Co 0.5 Mn 0.5 Fe 2 O 4 and PANI. In addition, the outstanding magnetic properties of the hollow Co 0.5 Mn 0.5 Fe 2 O 4 -PANI nanofibers with its inherent spinel structure facilitate the recovery of the photocatalyst.