TY - JOUR
T1 - Photocatalytic applications of paper-like poly(vinylidene fluoride)-titanium dioxide hybrids fabricated using a combination of electrospinning and electrospraying
AU - Ramasundaram, Subramaniyan
AU - Son, Aseom
AU - Seid, Mingizem Gashaw
AU - Shim, Sujin
AU - Lee, Sang Hyup
AU - Chung, Yun Chul
AU - Lee, Changha
AU - Lee, Jaesang
AU - Hong, Seok Won
N1 - Funding Information:
This work was supported by the Korean Ministry of the Environment as a “Converging Technology Project” ( 2012000600001 ) and in part by the KIST-UNIST partnership program ( 2.140442.01 ).
Publisher Copyright:
© 2014 Elsevier B.V.All rights reserved.
PY - 2015/3/1
Y1 - 2015/3/1
N2 - A paper-like photocatalyst was fabricated by electrospraying an N,N'-dimethylformamide (DMF) dispersion of titanium dioxide (TiO2) nanoparticles (NPs) on a poly(vinylidene fluoride) nanofiber (PVDF NF) mat prepared by electrospinning. Morphological studies revealed that the TiO2 NPs uniformly deposited as clusters on the surface of the PVDF NF mat. The immobilized amount of TiO2 was found to be 2.08, 2.44, 3.80, and 4.73mg per 45cm2 of PVDF-TiO2 hybrids for the electrospraying of 10, 20, 40, and 60ml of TiO2-DMF, respectively. The hybrid photocatalysts were effective in degrading bisphenol A (BPA), 4-chlorophenol (4-CP), and cimetidine (CMT), which dissolved in both deionized water and secondary wastewater effluents, with activity being proportional to the quantity of TiO2 NPs immobilized. For the highest loading amount of TiO2, BPA, 4-CP, and CMT degraded completely within 100, 100, and 40min of UV irradiation, respectively. Stable photo-oxidation of CMT was maintained through 10 repeated cycles. During these cycles, it was confirmed that there was no loss of TiO2 NPs by inductively coupled plasma optical emission spectrometry. Our results suggest that effective and stable PVDF-TiO2 hybrid photocatalysts can be fabricated on a large scale by combining electrospinning and electrospraying techniques.
AB - A paper-like photocatalyst was fabricated by electrospraying an N,N'-dimethylformamide (DMF) dispersion of titanium dioxide (TiO2) nanoparticles (NPs) on a poly(vinylidene fluoride) nanofiber (PVDF NF) mat prepared by electrospinning. Morphological studies revealed that the TiO2 NPs uniformly deposited as clusters on the surface of the PVDF NF mat. The immobilized amount of TiO2 was found to be 2.08, 2.44, 3.80, and 4.73mg per 45cm2 of PVDF-TiO2 hybrids for the electrospraying of 10, 20, 40, and 60ml of TiO2-DMF, respectively. The hybrid photocatalysts were effective in degrading bisphenol A (BPA), 4-chlorophenol (4-CP), and cimetidine (CMT), which dissolved in both deionized water and secondary wastewater effluents, with activity being proportional to the quantity of TiO2 NPs immobilized. For the highest loading amount of TiO2, BPA, 4-CP, and CMT degraded completely within 100, 100, and 40min of UV irradiation, respectively. Stable photo-oxidation of CMT was maintained through 10 repeated cycles. During these cycles, it was confirmed that there was no loss of TiO2 NPs by inductively coupled plasma optical emission spectrometry. Our results suggest that effective and stable PVDF-TiO2 hybrid photocatalysts can be fabricated on a large scale by combining electrospinning and electrospraying techniques.
KW - Electrospinning
KW - Electrospraying
KW - Paper-like photocatalyst
KW - Poly(vinylidene fluoride) nanofibers
KW - TiO nanoparticles
UR - http://www.scopus.com/inward/record.url?scp=84919663595&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2014.12.004
DO - 10.1016/j.jhazmat.2014.12.004
M3 - Article
C2 - 25514651
AN - SCOPUS:84919663595
SN - 0304-3894
VL - 285
SP - 267
EP - 276
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
ER -