期刊
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷 139, 期 1, 页码 57-66出版社
SPRINGER
DOI: 10.1007/s10973-019-08398-z
关键词
TiBALDH; PVP; Electrospinning; Annealing; TiO2; TGA-MS; SEM-EDX; FTIR and XRD
资金
- Budapest University of Technology and Economics
A new electrospinning process was developed for preparing TiO2 nanofibers using a water-soluble Ti-precursor, [bis(kappa1O-hydroxo)(bis(kappa2O,O '-lactato)titanium(IV)] commonly known as titanium(IV) bis (ammonium lactato) dihydroxide (TiBALDH). The importance of the study is justified by the fact that Ti-precursors used for electrospinning, sol-gel, hydrothermal and other fiber synthesis processes are mostly non-water soluble. Accordingly, anatase TiO2 nanofibers of diameter between 20 and 140 nm were synthesized by electrospinning and annealing. Polyvinylpyrrolidone (PVP) and different concentrations of TiBALDH were dissolved in a mixture of water, ethyl alcohol and acetic acid to optimize the electrospinning conditions. The thermal decomposition and fragmentation of PVP, TiBALDH and the fibers with 50% mass fraction of TiBALDH were studied by TGA-MS measurements. The fibers were then annealed at 1 degrees C min(-1) until 600 degrees C. The TiO2 fibers were characterized using SEM-EDX, FTIR and XRD
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