Details

Autor(en) / Beteiligte

• Efome, Johnson E.
• Rana, Dipak
• Matsuura, Takeshi
• Lan, Christopher Q.

Titel

Metal–organic frameworks supported on nanofibers to remove heavy metals

Ist Teil von

• Journal of materials chemistry. A, Materials for energy and sustainability, 2018-01, Vol.6 (10), p.4550-4555

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Fe( iii ) and Zr( iv ) based metal–organic frameworks (MOFs) were enmeshed in polyacrylonitrile (PAN) and polyvinylidene fluoride (PVDF) electro-spun nanofibers to produce nanofibrous MOF membranes (NMOM). The pristine MOFs showed high adsorption capacity for lead ions and mercury ions from aqueous solution. The Fe( iii ) based MOFs with PAN based NMOM exhibited a high flux of 348 L m −2 h −1 with a permeance of 870 L m −1 h −1 bar −1 . At room temperature, the NMOM could treat 395 mL of 100 ppb Pb( ii ) solution, while maintaining a drinking water standard of <10 ppb of permeate Pb( ii ) concentration. Due to the high compatibility between MOF and PVDF nanofibers, MOF was not detected in the permeate even after four cycles of filtration and desorption experiments and more than 90% of the NMM adsorption capacity was retained. The excellent filtration performance and re-generability of the membrane coupled with the hydro-stability of the MOFs suggests that the NMOMs have potential for water treatment through the process of membrane adsorption.