Skip to main content

Advertisement

Table 2 Parameters of key VACNT membranes developed by other groups (Futaba et al. 2006; Zhao et al. 2009b; Ge et al. 2012; Skoulidas et al. 2002; Ackerman et al. 2003; Kumar et al. 2012; Gilani et al. 2013; Majumder et al. 2011; Krishnakumar et al. 2012; Mi et al. 2007)

From: Effect of vertically aligned carbon nanotube density on the water flux and salt rejection in desalination membranes

CNT membrane Our group Mi group (Mi et al. 2007) Hinds group (Hinds et al. 2004) Holt group (Holt et al. 2006) Kim group (Kim et al. 2007)
Main structure VACNT + PDMS composite Porous aluminium support Free standing Silicon water PTFE Filter
Filler material PDMS Polystyrene Polystyrene Silicon nitride Polysulfone
CNTs MWCNT MWCNT MWCNT DWCNT SWCNT
Average outer diameter (nm) 20 20 NAa 2 NA
Average inner diameter (nm) 8 6.3 7.5 ± 2.5 1.6 ± 0.4 1.2
Thickness of CNT layer (μm) 25 ~10 5–10 5 6
CNT density (tubes cm−2) 5 × 109, 1010, 5 × 1010, 1011 1.87 × 109 6 × 1010 2.5 × 1011 (7.0 ± 1.75) × 1010
Maximum permeance (LMHBar) 917, 1007, 1111, 1203 475 1100 1080 NA
  1. Note that theses membranes are not structurally similar and were used for different applications
  2. SWNT single-walled carbon nanotube, DWCNT double-walled carbon nanotube, MWCNT multi-walled carbon nanotube
  3. aNot available data