TY - JOUR
T1 - Photoelectrochemical solar water splitting using electrospun TiO2 nanofibers
AU - Mali, Mukund G.
AU - An, Seongpil
AU - Liou, Minho
AU - Al-Deyab, Salem S.
AU - Yoon, Suk Goo
PY - 2015/1/1
Y1 - 2015/1/1
N2 - TiO2 nano-fibrous films of thicknesses ranging from 0.17 to 3.24 μm were prepared on an indium-doped tin oxide substrate using an electrospinning technique for which the spinning time was varied from 5 to 60 min. The structural and morphological aspects were studied by means of XRD, Raman, and SEM analyses. The photoelectrochemical (PEC) properties of the films were tested by performing current-potential measurements. The optimal PEC performance was explored by varying the experimental conditions, specifically, the spinning time (5-60 min) and the annealing temperature (300, 500, and 700°C). A comparison of the PEC performance of all the NF film thicknesses (0.17, 0.31, 1.53, 2.16, 4.67, and 7.53 μm) revealed that a thickness of 4.67 μm, that is, a film formed by electrospinning over a duration of 45 min, exhibited the optimum level of PEC performance. This film generated a photocurrent of around 150 μA/cm2, which was larger than the PEC values produced by the other films. The PEC performance of the 7.53-μm TiO2 NF film (produced by coating for 60 min) was found to be inferior to that of all the other thicknesses.
AB - TiO2 nano-fibrous films of thicknesses ranging from 0.17 to 3.24 μm were prepared on an indium-doped tin oxide substrate using an electrospinning technique for which the spinning time was varied from 5 to 60 min. The structural and morphological aspects were studied by means of XRD, Raman, and SEM analyses. The photoelectrochemical (PEC) properties of the films were tested by performing current-potential measurements. The optimal PEC performance was explored by varying the experimental conditions, specifically, the spinning time (5-60 min) and the annealing temperature (300, 500, and 700°C). A comparison of the PEC performance of all the NF film thicknesses (0.17, 0.31, 1.53, 2.16, 4.67, and 7.53 μm) revealed that a thickness of 4.67 μm, that is, a film formed by electrospinning over a duration of 45 min, exhibited the optimum level of PEC performance. This film generated a photocurrent of around 150 μA/cm2, which was larger than the PEC values produced by the other films. The PEC performance of the 7.53-μm TiO2 NF film (produced by coating for 60 min) was found to be inferior to that of all the other thicknesses.
KW - Electrospinning
KW - Photo current density
KW - TiO nanofibers
KW - Water splitting
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U2 - 10.1016/j.apsusc.2014.12.022
DO - 10.1016/j.apsusc.2014.12.022
M3 - Article
AN - SCOPUS:84922252310
VL - 328
SP - 109
EP - 114
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -