Development of photocatalytic TiO2 nanofibers by electrospinning and its application to degradation of dye pollutants

Seok Joo Doh; Cham Kim; Se Geun Lee; Sung Jun Lee; Hoyoung Kim

doi:10.1016/j.jhazmat.2007.09.118

Development of photocatalytic TiO₂ nanofibers by electrospinning and its application to degradation of dye pollutants

Seok Joo Doh, Cham Kim, Se Geun Lee, Sung Jun Lee, Hoyoung Kim

Daegu Gyeongbuk Institute of Science and Technology

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

174 Scopus citations

Abstract

We have developed photocatalytic TiO₂ nanofibers for the treatment of organic pollutants by using electrospinning method. We found that the optimized electrospinning conditions (electric field and flow rate) were 0.9 kV cm^-1 and 50 μL min^-1. After annealing at 550 °C for 30 min, we fabricated TiO₂ nanofibers (average 236 nm thick) with anatase crystalline phase. To increase photocatalytic activity and effective surface area, we coated photocatalytic TiO₂ particles on the TiO₂ nanofibers by using sol-gel method. The degradation rate (k′ = 85.4 × 10^-4 min^-1) of composite TiO₂ was significantly higher than that (15.7 × 10^-4 min^-1) of TiO₂ nanofibers and that (14.3 × 10^-4 min^-1) of TiO₂ nanoparticles by the sol-gel method. Therefore, we suggested that the composite TiO₂ of nanofibers and nanoparticles be suitable for the degradation of organic pollutants.

Original language	English
Pages (from-to)	118-127
Number of pages	10
Journal	Journal of Hazardous Materials
Volume	154
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jhazmat.2007.09.118
State	Published - 15 Jun 2008

Bibliographical note

Funding Information:
This work was supported by the DGIST Basic Research Program of the Ministry of Science and Technology (MoST) of Korea.

Keywords

Degradation
Dye
Nanofibers
Photocatalytic
Pollutants
TiO

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10.1016/j.jhazmat.2007.09.118

Cite this

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title = "Development of photocatalytic TiO2 nanofibers by electrospinning and its application to degradation of dye pollutants",

abstract = "We have developed photocatalytic TiO2 nanofibers for the treatment of organic pollutants by using electrospinning method. We found that the optimized electrospinning conditions (electric field and flow rate) were 0.9 kV cm-1 and 50 μL min-1. After annealing at 550 °C for 30 min, we fabricated TiO2 nanofibers (average 236 nm thick) with anatase crystalline phase. To increase photocatalytic activity and effective surface area, we coated photocatalytic TiO2 particles on the TiO2 nanofibers by using sol-gel method. The degradation rate (k′ = 85.4 × 10-4 min-1) of composite TiO2 was significantly higher than that (15.7 × 10-4 min-1) of TiO2 nanofibers and that (14.3 × 10-4 min-1) of TiO2 nanoparticles by the sol-gel method. Therefore, we suggested that the composite TiO2 of nanofibers and nanoparticles be suitable for the degradation of organic pollutants.",

keywords = "Degradation, Dye, Nanofibers, Photocatalytic, Pollutants, TiO",

author = "Doh, \{Seok Joo\} and Cham Kim and Lee, \{Se Geun\} and Lee, \{Sung Jun\} and Hoyoung Kim",

note = "Funding Information: This work was supported by the DGIST Basic Research Program of the Ministry of Science and Technology (MoST) of Korea.",

year = "2008",

month = jun,

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doi = "10.1016/j.jhazmat.2007.09.118",

language = "English",

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T1 - Development of photocatalytic TiO2 nanofibers by electrospinning and its application to degradation of dye pollutants

AU - Doh, Seok Joo

AU - Kim, Cham

AU - Lee, Se Geun

AU - Lee, Sung Jun

AU - Kim, Hoyoung

N1 - Funding Information: This work was supported by the DGIST Basic Research Program of the Ministry of Science and Technology (MoST) of Korea.

PY - 2008/6/15

Y1 - 2008/6/15

N2 - We have developed photocatalytic TiO2 nanofibers for the treatment of organic pollutants by using electrospinning method. We found that the optimized electrospinning conditions (electric field and flow rate) were 0.9 kV cm-1 and 50 μL min-1. After annealing at 550 °C for 30 min, we fabricated TiO2 nanofibers (average 236 nm thick) with anatase crystalline phase. To increase photocatalytic activity and effective surface area, we coated photocatalytic TiO2 particles on the TiO2 nanofibers by using sol-gel method. The degradation rate (k′ = 85.4 × 10-4 min-1) of composite TiO2 was significantly higher than that (15.7 × 10-4 min-1) of TiO2 nanofibers and that (14.3 × 10-4 min-1) of TiO2 nanoparticles by the sol-gel method. Therefore, we suggested that the composite TiO2 of nanofibers and nanoparticles be suitable for the degradation of organic pollutants.

AB - We have developed photocatalytic TiO2 nanofibers for the treatment of organic pollutants by using electrospinning method. We found that the optimized electrospinning conditions (electric field and flow rate) were 0.9 kV cm-1 and 50 μL min-1. After annealing at 550 °C for 30 min, we fabricated TiO2 nanofibers (average 236 nm thick) with anatase crystalline phase. To increase photocatalytic activity and effective surface area, we coated photocatalytic TiO2 particles on the TiO2 nanofibers by using sol-gel method. The degradation rate (k′ = 85.4 × 10-4 min-1) of composite TiO2 was significantly higher than that (15.7 × 10-4 min-1) of TiO2 nanofibers and that (14.3 × 10-4 min-1) of TiO2 nanoparticles by the sol-gel method. Therefore, we suggested that the composite TiO2 of nanofibers and nanoparticles be suitable for the degradation of organic pollutants.

KW - Degradation

KW - Dye

KW - Nanofibers

KW - Photocatalytic

KW - Pollutants

KW - TiO

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