TY - JOUR
T1 - Particulate matters removal by using cotton coated with isomeric metal-organic frameworks (MOFs)
T2 - Effect of voidage of MOFs on removal
AU - Woo, Ho Chul
AU - Yoo, Dong Kyu
AU - Jhung, Sung Hwa
N1 - Publisher Copyright:
© 2021 The Korean Society of Industrial and Engineering Chemistry
PY - 2021/3/25
Y1 - 2021/3/25
N2 - High quality of air is indispensable for our comfortable life and sustainability; however, air contamination with various substances, especially with particulate matters (PMs), is worsening in recent days. In this study, we applied three isomeric metal-organic frameworks (MOFs) such as MAF-5, MAF-6 and MAF-32 (MAF means metal-azolate framework, a sub-class of MOF), after coated on cotton, in removing PMs from air. Isomeric MOFs were applied to identify an important parameter of MOFs in PM capture/removal since those MOFs have different characteristics (even have the very same composition). It was found that removal efficiency and quality factor (QF) of MAFs/cotton linearly increased with increasing the voidage (v/v) of the investigated MAFs, suggesting the importance of voidage of MOFs in PM capture. Moreover, we could explain how MAFs with small pore (compared with the size of PMs) is effective in interaction (for capture) between PM and MAFs. Finally, the MAF-6, the best MAF among the studied MAFs, was much more efficient in PM removal than conventional or widely applied MOFs like ZIF-8 (for example, QF for PM2.5 of cotton, MAF-6/cotton and ZIF-8/cotton are 0.016, 0.060 and 0.030 Pa−1, respectively).
AB - High quality of air is indispensable for our comfortable life and sustainability; however, air contamination with various substances, especially with particulate matters (PMs), is worsening in recent days. In this study, we applied three isomeric metal-organic frameworks (MOFs) such as MAF-5, MAF-6 and MAF-32 (MAF means metal-azolate framework, a sub-class of MOF), after coated on cotton, in removing PMs from air. Isomeric MOFs were applied to identify an important parameter of MOFs in PM capture/removal since those MOFs have different characteristics (even have the very same composition). It was found that removal efficiency and quality factor (QF) of MAFs/cotton linearly increased with increasing the voidage (v/v) of the investigated MAFs, suggesting the importance of voidage of MOFs in PM capture. Moreover, we could explain how MAFs with small pore (compared with the size of PMs) is effective in interaction (for capture) between PM and MAFs. Finally, the MAF-6, the best MAF among the studied MAFs, was much more efficient in PM removal than conventional or widely applied MOFs like ZIF-8 (for example, QF for PM2.5 of cotton, MAF-6/cotton and ZIF-8/cotton are 0.016, 0.060 and 0.030 Pa−1, respectively).
KW - Air filter
KW - Isomer
KW - MAFs
KW - MOFs
KW - Particulate matter
KW - Voidage
UR - http://www.scopus.com/inward/record.url?scp=85099214342&partnerID=8YFLogxK
U2 - 10.1016/j.jiec.2020.12.035
DO - 10.1016/j.jiec.2020.12.035
M3 - Article
AN - SCOPUS:85099214342
SN - 1226-086X
VL - 95
SP - 277
EP - 285
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
ER -