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Vertically-aligned carbon nanotube (VACNT) composite membranes were fabricated by impregnating carbon nanotube (CNT) forests with poly-para-xylylene (parylene-C) through room-temperature chemical vapor deposition (CVD). Transport properties of diverse gases through the CNT/parylene membranes were investigated. The gas permeances scaled inversely with their molecular weights in accordance with Knudsen...
The influence of total gas flow on the growth of carbon nanotube (CNT) forests in water-assisted chemical vapour deposition has been investigated. It was found that the average height of the CNT forests decreased gradually from 996.53 to 696.8 μm, and the growth yield decreased notably from 2.91 to 1.98 mg/cm2 as the total flow increased, but the crystallinity and thermostability of CNT forests increased...
Millimeter-long few-walled carbon nanotube (FWNT) forests were grown by a water-assisted chemical vapor deposition method. In only 10 min, the forests grew to over 1.2 mm in height, with a growth yield around 2.76±0.30 mg/cm2. Transmission electron microscopy observation and Raman analysis showed high crystallinity of the nanotubes. A carbon purity better than 98.8 wt% was further determined by thermogravimetric...
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