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Aerosol Science and Technology Volume 47, 2013 - Issue 7
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Original Articles

Determination of Geometrical Length of Airborne Carbon Nanotubes by Electron Microscopy, Model Calculation, and Filtration Method

Yeon Kyoung BahkETH ZurichInstitute of Environmental Engineering, Zurich, Switzerland;EMPAAnalytical Chemistry, Dübendorf, Switzerland
,
Jelena BuhaETH ZurichInstitute of Environmental Engineering, Zurich, Switzerland;EMPAAnalytical Chemistry, Dübendorf, Switzerland
&
Jing WangETH ZurichInstitute of Environmental Engineering, Zurich, Switzerland;EMPAAnalytical Chemistry, Dübendorf, SwitzerlandCorrespondence[email protected]
Pages 776-784 | Received 20 Dec 2012, Accepted 14 Mar 2013, Published online: 19 Apr 2013

Figures & data

Figure 1 FIG. 1 Experimental system for CNT filtration tests.
Figure 1 FIG. 1 Experimental system for CNT filtration tests.
Figure 2 FIG. 2 Size distributions from suspensions of different concentrations and SEM images from respective modes for MWCNTs from Baytubes.
Figure 2 FIG. 2 Size distributions from suspensions of different concentrations and SEM images from respective modes for MWCNTs from Baytubes.
Figure 3 FIG. 3 Size distributions from suspensions of different concentrations for MWCNTs from Cheaptubes.
Figure 3 FIG. 3 Size distributions from suspensions of different concentrations for MWCNTs from Cheaptubes.
Figure 4 FIG. 4 An example of SEM images of collected MWCNTs on a silicon substrate with 75 nm mobility size (Cheaptubes).
Figure 4 FIG. 4 An example of SEM images of collected MWCNTs on a silicon substrate with 75 nm mobility size (Cheaptubes).
Figure 5 FIG. 5 Measured length distribution of the MWCNTs with 75 nm mobility size (Cheaptubes).
Figure 5 FIG. 5 Measured length distribution of the MWCNTs with 75 nm mobility size (Cheaptubes).
Figure 6 FIG. 6 Fitting for measured length distribution of electrical mobility size of 75 nm and log normal distribution (Cheaptubes).
Figure 6 FIG. 6 Fitting for measured length distribution of electrical mobility size of 75 nm and log normal distribution (Cheaptubes).
Figure 7 FIG. 7 Linear fitting for the length of CNTs and electrical mobility size of CNTs divided by the slip correction factor (Cheaptubes).
Figure 7 FIG. 7 Linear fitting for the length of CNTs and electrical mobility size of CNTs divided by the slip correction factor (Cheaptubes).
Figure 8 FIG. 8 Linear fitting for the length of CNTs and electrical mobility size of CNTs divided by the slip correction factor (Baytubes).
Figure 8 FIG. 8 Linear fitting for the length of CNTs and electrical mobility size of CNTs divided by the slip correction factor (Baytubes).
Figure 9 FIG. 9 Comparison of measured geometrical lengths of CNTs with previous studies. (Color figure available online.)
Figure 9 FIG. 9 Comparison of measured geometrical lengths of CNTs with previous studies. (Color figure available online.)
Figure 10 FIG. 10 Comparison between the measured geometrical length of CNTs by SEM analysis and obtained length of CNTs by filtration method (Cheaptubes).
Figure 10 FIG. 10 Comparison between the measured geometrical length of CNTs by SEM analysis and obtained length of CNTs by filtration method (Cheaptubes).
Figure 11 FIG. 11 Comparison between the measured geometrical length of CNTs by SEM analysis and obtained length of CNTs by filtration method (Baytubes).
Figure 11 FIG. 11 Comparison between the measured geometrical length of CNTs by SEM analysis and obtained length of CNTs by filtration method (Baytubes).

Table 1 TABLE 1 Measured and calculated geometrical lengths of CNTs

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