Synthesis of LaMnO3 Nanofibers via Electrospinning

Abstract

Polyvinyl alcohol(PVA)/[La(NO 3 ) 3 +Mn(CH 3 COO) 2 ] composite nanofibers were fabricated by electrospinning, and polycrystalline LaMnO 3 nanofibers were prepared by calcination of the PVA/[La(NO 3 ) 3 +Mn(CH 3 COO) 2 ] composite nanofibers at 600ºC for 10h. The samples were characterized by using thermogravimetric-differential thermal analysis (TG-DTA), X-ray diffraction spectrometry(XRD), scanning electron microscopy(SEM) and Fourier transform infrared spectrometry(FTIR). The results show that PVA/[La(NO 3 ) 3 +Mn(CH 3 COO) 2 ] composite nanofibers are amorphous in structure, and pure phase LaMnO 3 nanofibers are orthorhombic with space group Pbnm. The surface of as-prepared composite nanofibers is smooth, and the diameter is about 150nm. The diameter of LaMnO 3 nanofibers is smaller than that of the relevant composite fibers. The surface of the LaMnO 3 nanofibers becomes coarse with the increase of calcination temperatures. The diameter of LaMnO 3 nanofibers is ca. 100nm, and the length is greater than 100 m. The mass of the sample remains constant when the temperature is above 450ºC, and the total mass loss percentage is 94.6%. Possible formation mechanism of LaMnO 3 nanofibers is preliminarily proposed.

Structural Properties Dependence on Annealing Temperature of 1-D Lanthanum Iron Garnet Nanofiber Prepared via Electrospinning Technique

“…Nanofibers have drawn massive attention of researchers due to its unique properties. Nanofibers are expected to play an important part as both interconnects and functional units in fabricating electronic, optoelectronic, electrochemical, and electromechanical devices in the nanoscale range [1]. Basically, nanofibers are fibers having diameter of less than 100 nm.…”

Fabrication and Characterization of Hexagonal SrMnO3Nanofibers by Electrospinning

“…Electrospinning technique is extensively employed to synthesize some ultrafine, continuous and uniform diameter nanofibers of polymers, composites and ceramics for its advantages such as briefness, versatility, time saving and low cost [1,2]. The method of electrospinning has some advantage such as high porous structure, low density and high specific surface area in synthesis of nanofibers.…”

“…The formation of ceramic nanofibers by electrospinning was firstly reported by Shao et al [5] in 2002. As far, many one-dimensional ceramic materials have been synthesized by electrospinning such as BaTiO 3 , YMnO 4 , CaSnO 3 , MgWO 4 , etc., [2][3][4][5][6][7][8][9][10][11][12].…”

Characterization of Cost Effective PbTiO<sub>3</sub> Nanofibres by Electrospinning Technique

“…The electrospinning process has been documented using a variety of fibre forming polymers. By choosing a suitable polymer and solvent system, nanofibres with diameters in the range of 40-2000 nm can be made (Jinxian et al, 2009 …”