Fabrication of mixed matrix nanofibers with electrospraying and electrospinning techniques and their application to gas toluene removal

Elifnur Gezmis-Yavuz; C. Elif Cansoy; Derya Y. Koseoglu-Imer

doi:10.1016/j.jece.2023.110067

Fabrication of mixed matrix nanofibers with electrospraying and electrospinning techniques and their application to gas toluene removal

Elifnur Gezmis-Yavuz^*, C. Elif Cansoy, Derya Y. Koseoglu-Imer

^*Corresponding author for this work

Department of Environmental Engineering

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

4 Citations (Scopus)

Abstract

This study describes the fabrication and characterization of mixed matrix nanofiber air filters having adsorptive and photocatalytic properties. Two fabrication techniques were applied as (i) single electrospinning (SE) and (ii) successive electrospinning and electrospraying (SEE) for doping of photocatalyst (TiO₂) in nanofiber structure. Polyacrylonitrile (PAN) was used as main polymer, the nanoclay (NC) was used with ratios of 0.5%, 1.0% and 2.0% (w/w) as nanoadsorbent and TiO₂ was used as photocatalytic oxidation agent. TiO₂ was integrated to the nanofiber structure with two doping methods (blended in solution and sprayed) providing as same TiO₂ mass (0.2 g TiO₂/g PAN) in unit area of final nanofiber structure. The water vapor transmission rate (WVTR) values showed a decreasing trend with the addition of NC and varies between 80 and 150 g/m²h. The presence of NC played a critical role in increasing of toluene adsorption capacity of nanofiber from 15% to 40% with increasing of NC amount. The maximum toluene degradation rates of mixed matrix nanofiber were found as 0.09 ppm/min for the NC_2.0-TiO₂_-_S coded nanofiber and 0.05 ppm/min for the NC_2.0-TiO₂ coded nanofiber. The integration of TiO₂ to nanofibers with SEE was found as more effective for toluene oxidation than SE. With the electrosprayed TiO₂, the contact area of nanofiber is further increased and the UVA light more easily activates TiO₂ onto nanofiber. Among all nanofibers, NC_2.0-TiO_2-S coded nanofiber (doped TiO₂ with SEE) is promising for air filter considering its filtration properties in general, as it has high toluene adsorption and oxidation efficiency, good air permeability, 93% particulate matter filtration efficiency and low pressure drop.

Original language	English
Article number	110067
Journal	Journal of Environmental Chemical Engineering
Volume	11
Issue number	3
DOIs	https://doi.org/10.1016/j.jece.2023.110067
Publication status	Published - Jun 2023

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Ltd

Funding

This study was supported by Istanbul Technical University Scientific Research Projects Coordination Unit (ITU-BAP, Project number: MDK-2019–42084 ). Authors are grateful to ITU-BAP due to their financial support; MOGUL for support layer; Ahmet Nazım and Res. Asst. Dr. Memnune Kardeş from Materials Science and Engineering Dep. and Res. Asst. Gizem Başaran Dindaş from the Environmental Engineering Dep. from Gebze Technical University for the support of SEM and FTIR analysis; Assist. Prof. Ali Kılıç from ITU-TEMAG Laboratory for air permeability test and finally to team members (Esra Büyükada Kesici and Dila Aydin-Aytekin) of Innobrane research group and ITU-Environmental Engineering Central Laboratory for technical support. This study was supported by Istanbul Technical University Scientific Research Projects Coordination Unit (ITU-BAP, Project number: MDK-2019–42084). Authors are grateful to ITU-BAP due to their financial support; MOGUL for support layer; Ahmet Nazım and Res. Asst. Dr. Memnune Kardeş from Materials Science and Engineering Dep. and Res. Asst. Gizem Başaran Dindaş from the Environmental Engineering Dep. from Gebze Technical University for the support of SEM and FTIR analysis; Assist. Prof. Ali Kılıç from ITU-TEMAG Laboratory for air permeability test and finally to team members (Esra Büyükada Kesici and Dila Aydin-Aytekin) of Innobrane research group and ITU-Environmental Engineering Central Laboratory for technical support.

Funders	Funder number
MOGUL
Istanbul Teknik Üniversitesi
Gebze Teknik Üniversitesi
Bilimsel Araştırma Projeleri Birimi, İstanbul Teknik Üniversitesi	MDK-2019–42084

Keywords

Adsorption
Air filter
Electrospinning
Electrospraying
Nanoclay
PAN
Photocatalytic oxidation
TiO
Toluene removal

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title = "Fabrication of mixed matrix nanofibers with electrospraying and electrospinning techniques and their application to gas toluene removal",

abstract = "This study describes the fabrication and characterization of mixed matrix nanofiber air filters having adsorptive and photocatalytic properties. Two fabrication techniques were applied as (i) single electrospinning (SE) and (ii) successive electrospinning and electrospraying (SEE) for doping of photocatalyst (TiO2) in nanofiber structure. Polyacrylonitrile (PAN) was used as main polymer, the nanoclay (NC) was used with ratios of 0.5%, 1.0% and 2.0% (w/w) as nanoadsorbent and TiO2 was used as photocatalytic oxidation agent. TiO2 was integrated to the nanofiber structure with two doping methods (blended in solution and sprayed) providing as same TiO2 mass (0.2 g TiO2/g PAN) in unit area of final nanofiber structure. The water vapor transmission rate (WVTR) values showed a decreasing trend with the addition of NC and varies between 80 and 150 g/m2h. The presence of NC played a critical role in increasing of toluene adsorption capacity of nanofiber from 15% to 40% with increasing of NC amount. The maximum toluene degradation rates of mixed matrix nanofiber were found as 0.09 ppm/min for the NC2.0-TiO2-S coded nanofiber and 0.05 ppm/min for the NC2.0-TiO2 coded nanofiber. The integration of TiO2 to nanofibers with SEE was found as more effective for toluene oxidation than SE. With the electrosprayed TiO2, the contact area of nanofiber is further increased and the UVA light more easily activates TiO2 onto nanofiber. Among all nanofibers, NC2.0-TiO2-S coded nanofiber (doped TiO2 with SEE) is promising for air filter considering its filtration properties in general, as it has high toluene adsorption and oxidation efficiency, good air permeability, 93% particulate matter filtration efficiency and low pressure drop.",

keywords = "Adsorption, Air filter, Electrospinning, Electrospraying, Nanoclay, PAN, Photocatalytic oxidation, TiO, Toluene removal",

author = "Elifnur Gezmis-Yavuz and Cansoy, {C. Elif} and Koseoglu-Imer, {Derya Y.}",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

year = "2023",

month = jun,

doi = "10.1016/j.jece.2023.110067",

language = "English",

volume = "11",

journal = "Journal of Environmental Chemical Engineering",

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T1 - Fabrication of mixed matrix nanofibers with electrospraying and electrospinning techniques and their application to gas toluene removal

AU - Gezmis-Yavuz, Elifnur

AU - Cansoy, C. Elif

AU - Koseoglu-Imer, Derya Y.

PY - 2023/6

Y1 - 2023/6

N2 - This study describes the fabrication and characterization of mixed matrix nanofiber air filters having adsorptive and photocatalytic properties. Two fabrication techniques were applied as (i) single electrospinning (SE) and (ii) successive electrospinning and electrospraying (SEE) for doping of photocatalyst (TiO2) in nanofiber structure. Polyacrylonitrile (PAN) was used as main polymer, the nanoclay (NC) was used with ratios of 0.5%, 1.0% and 2.0% (w/w) as nanoadsorbent and TiO2 was used as photocatalytic oxidation agent. TiO2 was integrated to the nanofiber structure with two doping methods (blended in solution and sprayed) providing as same TiO2 mass (0.2 g TiO2/g PAN) in unit area of final nanofiber structure. The water vapor transmission rate (WVTR) values showed a decreasing trend with the addition of NC and varies between 80 and 150 g/m2h. The presence of NC played a critical role in increasing of toluene adsorption capacity of nanofiber from 15% to 40% with increasing of NC amount. The maximum toluene degradation rates of mixed matrix nanofiber were found as 0.09 ppm/min for the NC2.0-TiO2-S coded nanofiber and 0.05 ppm/min for the NC2.0-TiO2 coded nanofiber. The integration of TiO2 to nanofibers with SEE was found as more effective for toluene oxidation than SE. With the electrosprayed TiO2, the contact area of nanofiber is further increased and the UVA light more easily activates TiO2 onto nanofiber. Among all nanofibers, NC2.0-TiO2-S coded nanofiber (doped TiO2 with SEE) is promising for air filter considering its filtration properties in general, as it has high toluene adsorption and oxidation efficiency, good air permeability, 93% particulate matter filtration efficiency and low pressure drop.

AB - This study describes the fabrication and characterization of mixed matrix nanofiber air filters having adsorptive and photocatalytic properties. Two fabrication techniques were applied as (i) single electrospinning (SE) and (ii) successive electrospinning and electrospraying (SEE) for doping of photocatalyst (TiO2) in nanofiber structure. Polyacrylonitrile (PAN) was used as main polymer, the nanoclay (NC) was used with ratios of 0.5%, 1.0% and 2.0% (w/w) as nanoadsorbent and TiO2 was used as photocatalytic oxidation agent. TiO2 was integrated to the nanofiber structure with two doping methods (blended in solution and sprayed) providing as same TiO2 mass (0.2 g TiO2/g PAN) in unit area of final nanofiber structure. The water vapor transmission rate (WVTR) values showed a decreasing trend with the addition of NC and varies between 80 and 150 g/m2h. The presence of NC played a critical role in increasing of toluene adsorption capacity of nanofiber from 15% to 40% with increasing of NC amount. The maximum toluene degradation rates of mixed matrix nanofiber were found as 0.09 ppm/min for the NC2.0-TiO2-S coded nanofiber and 0.05 ppm/min for the NC2.0-TiO2 coded nanofiber. The integration of TiO2 to nanofibers with SEE was found as more effective for toluene oxidation than SE. With the electrosprayed TiO2, the contact area of nanofiber is further increased and the UVA light more easily activates TiO2 onto nanofiber. Among all nanofibers, NC2.0-TiO2-S coded nanofiber (doped TiO2 with SEE) is promising for air filter considering its filtration properties in general, as it has high toluene adsorption and oxidation efficiency, good air permeability, 93% particulate matter filtration efficiency and low pressure drop.

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KW - Air filter

KW - Electrospinning

KW - Electrospraying

KW - Nanoclay

KW - PAN

KW - Photocatalytic oxidation

KW - TiO

KW - Toluene removal

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DO - 10.1016/j.jece.2023.110067

M3 - Article

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SN - 2213-2929

VL - 11

JO - Journal of Environmental Chemical Engineering

JF - Journal of Environmental Chemical Engineering

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M1 - 110067

ER -

Fabrication of mixed matrix nanofibers with electrospraying and electrospinning techniques and their application to gas toluene removal

Abstract

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Keywords

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