2013
DOI: 10.1016/j.memsci.2013.02.042
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Studies on the porosity control of MWCNT/polysulfone composite membrane and its effect on metal removal

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Cited by 185 publications
(73 citation statements)
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“…The largest visible pore size of the unblended polysulfone membrane (Fig. 17 a) at lower magnification, while in the blended membrane containing 1 % nanotubes, is less than 1 mm [83]. The increased amount is also reflected by the membrane pore form, size and contact angle measurements.…”
Section: Multi-walled Carbon Nanotube/polysulfone Composite Membranesmentioning
confidence: 89%
See 2 more Smart Citations
“…The largest visible pore size of the unblended polysulfone membrane (Fig. 17 a) at lower magnification, while in the blended membrane containing 1 % nanotubes, is less than 1 mm [83]. The increased amount is also reflected by the membrane pore form, size and contact angle measurements.…”
Section: Multi-walled Carbon Nanotube/polysulfone Composite Membranesmentioning
confidence: 89%
“…The increase in carbon nanotube makes the surface of the membrane more smooth (Fig. 17 b and 17 c) as the exchange process becomes slower, owing to the increase in the viscosity of the blended solution [83]. The largest visible pore size of the unblended polysulfone membrane (Fig.…”
Section: Multi-walled Carbon Nanotube/polysulfone Composite Membranesmentioning
confidence: 99%
See 1 more Smart Citation
“…35 In brief, the washed and cleaned CNTs were treated with a 3:1 mixture of concentrated nitric and sulfuric acid (40 mL) for 24 h. These oxidized nanotubes were repeatedly washed with distilled water and then dried under vacuum. Both the single-walled and the multi-walled nanotubes were evaluated for the degree of functionalization in terms of the concentration of the -COOH groups generated on the surface.…”
Section: Purification and Functionalization Of Nanotubesmentioning
confidence: 99%
“…34 Comparing PS and polyethersulfone (PES), it is expected that the compatibility of CNTs and PS will be better than that between CNTs and PES due to the structural differences between PS and PES. We had previously reported the control of porosity by the blending of functionalized MWCNTs with PS to get composite membranes 35 and with SWCNTs to get composite membranes 36 with enhanced removal capacity for various ions separately. A better understanding of the surface structure in terms of pore sizes and pore distribution is still lacking.…”
Section: Introductionmentioning
confidence: 99%