Surface area and toluene adsorption capacity for fabricated single-walled carbon nanotube (SWNT) buckypaper

Details

• Personal Author:
  Floyd EL ; Lungu CT ; Oh, Je M.
• Description:
  To use single-walled carbon nanotubes (SWNTs) in volatile organic compound (VOC) passive samplers, SWNT buckypaper were fabricated in three different ways and their adsorption efficiencies were examined. 200 mL of the SWNT solution (arc discharge SWNTs suspended in 1% sodium cholate and sodium dodecyl sulfate) was diluted in 400 mL of acetone, vacuum-filtered through a polytetrafluoroethylene membrane filter, and buckypaper was obtained by delaminating the layer of SWNTs from the filter (not cleaned). A cleaning process was added to the above fabrication process. After SWNT solution was vacuum-filtered, SWNTs on the filter were cleaned with 250 mL of deionized water and 50 mL of acetone (acetone-cleaned). As another cleaning process, methanol was used to dilute and clean SWNTs (methanol-cleaned). The fabricated buckypapers were investigated for surface area and toluene adsorption isotherm. As a result, the cleaning process increased BET surface area; 43, 217, and 348 m2/g Brunauer, Emmett and Teller (BET) surface area for not cleaned, acetone-, and methanol-cleaned buckypapers, respectively. The adsorption capacity increased with increasing surface area of buckypapers; 52, 58, and 69 mg (toluene)/g (buckypaper) for not cleaned, acetone-, and methanol-cleaned buckypapers, respectively. Methanol-cleaned buckypapers were the most adsorptive, hinting for further investigation in desorption efficiency for the application to VOC passive samplers. [Description provided by NIOSH]
• Subjects:
  Acetone Laboratories Manufacturing And Industrial Facilities Methanol Occupational Health Radiation Safety Solvents Surface-Active Agents Temperature Toluene

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• Keywords:
  Adsorbents Analytical-instruments Analytical-processes Chemical Cleaning Filter Membranes Irradiation Laboratory Techniques Materials-testing Measurement-equipment Nanotechnology Organic-chemicals Organic-compounds Performance-capability Photometry Porous-materials Porous Materials Samlpers Sampling-equipment Sampling Methods Single-walled Carbon Nanotubes Sodium Compounds Sulfates Surface Properties Surfactants SWCNT Temperature Control Thermal-effects Volatiles

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• Publisher:
  The University of Alabama
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Abstract or Summary
• Place as Subject:
  Alabama ; Oklahoma ; OSHA Region 4 ; OSHA Region 6
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• NIOSHTIC Number:
  nn:20047835
• Citation:
  3rd Annual NanoBio Summit, October 23- 24, 2014, Birmingham, Alabama. Birmingham, AL: The University of Alabama, 2014 Oct; :G-303
• CAS Registry Number:
  Acetone (CAS RN 67-64-1) ; Carbon nanotubes (CAS RN 308068-56-6) ; Methanol (CAS RN 67-56-1) ; Sodium cholate (CAS RN 361-09-1) ; Sodium dodecyl sulfate (CAS RN 151-21-3) ; Toluene (CAS RN 108-88-3)
• Federal Fiscal Year:
  2015
• Performing Organization:
  University of Alabama at Birmingham
• Peer Reviewed:
  False
• Start Date:
  20130901
• Source Full Name:
  3rd Annual NanoBio Summit, October 23- 24, 2014, Birmingham, Alabama
• End Date:
  20150831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:fb4268c967180caa4cc50c9409120a981afd23e5718205593355d0dd1af4f00a91bee119a034072f6ea3df1e94e3e2e6cbb544ca6e1cb1ac3179a6846794c5df
• Download URL:
  https://stacks.cdc.gov/view/cdc/202802/cdc_202802_DS1.pdf
• File Type:
  [PDF - 353.57 KB ]