Photoelectrochemical solar water splitting using electrospun TiO                         2                          nanofibers

Mukund G. Mali; Seongpil An; Minho Liou; Salem S. Al-Deyab; Sam S. Yoon

doi:10.1016/j.apsusc.2014.12.022

Photoelectrochemical solar water splitting using electrospun TiO ₂ nanofibers

Mukund G. Mali, Seongpil An, Minho Liou, Salem S. Al-Deyab, Sam S. Yoon

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

TiO ₂ 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/cm ² , which was larger than the PEC values produced by the other films. The PEC performance of the 7.53-μm TiO ₂ NF film (produced by coating for 60 min) was found to be inferior to that of all the other thicknesses.

Original language	English
Pages (from-to)	109-114
Number of pages	6
Journal	Applied Surface Science
Volume	328
DOIs	https://doi.org/10.1016/j.apsusc.2014.12.022
Publication status	Published - 2015 Feb 15

Bibliographical note

Funding Information:
This work was supported by the Human Resources Development program (No. 20124030200120 ) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Trade, Industry and Energy . This research was also supported by Global Frontier Program through the Global Frontier Hybrid Interface Materials (GFHIM) of the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning ( 2013M3A6B1078879 ). The authors extend their appreciation to the Deanship of Scientific Research at King Saud University for funding the work through the research group project No. RGP-089 .

Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.

Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.

Keywords

Electrospinning
Photo current density
TiO nanofibers
Water splitting

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
General Physics and Astronomy
Surfaces and Interfaces
Surfaces, Coatings and Films

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.apsusc.2014.12.022

Cite this

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title = " Photoelectrochemical solar water splitting using electrospun TiO 2 nanofibers ",

abstract = " TiO 2 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/cm 2 , which was larger than the PEC values produced by the other films. The PEC performance of the 7.53-μm TiO 2 NF film (produced by coating for 60 min) was found to be inferior to that of all the other thicknesses. ",

keywords = "Electrospinning, Photo current density, TiO nanofibers, Water splitting",

author = "Mali, {Mukund G.} and Seongpil An and Minho Liou and Al-Deyab, {Salem S.} and Yoon, {Sam S.}",

note = "Funding Information: This work was supported by the Human Resources Development program (No. 20124030200120 ) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Trade, Industry and Energy . This research was also supported by Global Frontier Program through the Global Frontier Hybrid Interface Materials (GFHIM) of the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning ( 2013M3A6B1078879 ). The authors extend their appreciation to the Deanship of Scientific Research at King Saud University for funding the work through the research group project No. RGP-089 . Publisher Copyright: {\textcopyright} 2014 Elsevier B.V. All rights reserved. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.",

year = "2015",

month = feb,

day = "15",

doi = "10.1016/j.apsusc.2014.12.022",

language = "English",

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AU - Mali, Mukund G.

AU - An, Seongpil

AU - Liou, Minho

AU - Al-Deyab, Salem S.

AU - Yoon, Sam S.

N1 - Funding Information: This work was supported by the Human Resources Development program (No. 20124030200120 ) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Trade, Industry and Energy . This research was also supported by Global Frontier Program through the Global Frontier Hybrid Interface Materials (GFHIM) of the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning ( 2013M3A6B1078879 ). The authors extend their appreciation to the Deanship of Scientific Research at King Saud University for funding the work through the research group project No. RGP-089 . Publisher Copyright: © 2014 Elsevier B.V. All rights reserved. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.

PY - 2015/2/15

Y1 - 2015/2/15

N2 - TiO 2 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/cm 2 , which was larger than the PEC values produced by the other films. The PEC performance of the 7.53-μm TiO 2 NF film (produced by coating for 60 min) was found to be inferior to that of all the other thicknesses.

AB - TiO 2 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/cm 2 , which was larger than the PEC values produced by the other films. The PEC performance of the 7.53-μm TiO 2 NF film (produced by coating for 60 min) was found to be inferior to that of all the other thicknesses.

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KW - TiO nanofibers

KW - Water splitting

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