scholarly journals Long-term Inhalation Toxicity Studies with Multiwalled Carbon Nanotubes: Closing the Gaps or Initiating the Debate?

2009 ◽  
Vol 112 (2) ◽  
pp. 273-275 ◽  
Author(s):  
David B. Warheit
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Inhalation Toxicity ◽  
Multiwalled Carbon ◽  
Toxicity Studies ◽  
Closing The Gaps

scholarly journals Different Cellular Response of Human Mesothelial Cell MeT-5A to Short-Term and Long-Term Multiwalled Carbon Nanotubes Exposure

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Li Ju ◽  
Wei Wu ◽  
Min Yu ◽  
Jianlin Lou ◽  
Hao Wu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Cell Motility ◽  
Multiwalled Carbon Nanotubes ◽  
Mesothelial Cell ◽  
Continuous Exposure ◽  
Short Term ◽  
Multiwalled Carbon ◽  
Long Term Treatment ◽  
Human Mesothelial Cell

Despite being a commercially important product, multiwalled carbon nanotubes (MWCNTs) continue to raise concerns over human health due to their structural similarity to asbestos. Indeed, exposure to MWCNT has been shown to induce lung cancer and even mesothelioma, but contradictory results also exist. To clarify the potentially carcinogenic effects of rigid and rod-like MWCNT and to elucidate the underlying mechanisms, the effects of MWCNT on human mesothelial cell MeT-5A were examined throughout 3 months of continuous exposure, including cytotoxicity, genotoxicity, and cell motility. It was found that MWCNT did not affect MeT-5A cell proliferation at 10 μg/cm2 within 72 h treatment, but under the same condition, MWCNT induced genotoxicity and perturbed cell motility. In addition, MeT-5A cells demonstrated different cellular responses to MWCNT after short-term and long-term exposure. Taken together, our results indicated a possible carcinogenic potential for MWCNT after long-term treatment, in which Annexin family proteins might be involved.

Integration of Multiwalled Carbon Nanotubes in Bulk Heterojunction CdSe/PCPDTBT Hybrid Solar Cells

2018 ◽  
Vol 929 ◽  
pp. 150-157
Author(s):  
Alfian Ferdiansyah Madsuha ◽  
Nofrijon Sofyan ◽  
Akhmad Herman Yuwono ◽  
Michael Krueger
Keyword(s):  
Carbon Nanotubes ◽  
Solar Cells ◽  
Multiwalled Carbon Nanotubes ◽  
Bulk Heterojunction ◽  
Photovoltaic Performance ◽  
Hybrid Solar Cells ◽  
Cdse Qds ◽  
Multiwalled Carbon ◽  
Simple Method

In this work, the development of solution-processed bulk heterojunction hybrid solar cells based on CdSe quantum dot (QD) and conjugated polymer poly [2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta [2,1-b;3,4-b] dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)], PCPDTBT was performed. The photoactive layer was formed by integrating CdSe QDs onto multiwalled carbon nanotubes (CNTs). A simple method of thiol functionalization in the interface CNTs and CdSe QDs has been investigated. Integration of CNTs enhances long-term performance of solar cells devices. Initial PCE values of about 1.9 % under AM1.5G illumination have been achieved for this hybrid CNT-CdSe photovoltaic device. In addition, the long-term stability of the photovoltaic performance of the devices was investigated and found superior to CdSe QD only based devices. About 84 % of the initial PCE remained after storage in a glove box for one year without any further encapsulation. It is concluded that the improvement is mainly due to a strong binding between thiol functionalized CNTs and CdSe QDs, resulting preservation of the nanomorphology of the hybrid film over time.

Towards Long-Term Thermal Stability of Dye-Sensitized Solar Cells Using Multiwalled Carbon Nanotubes

ChemPlusChem ◽  
2018 ◽  
Vol 83 (7) ◽  
pp. 682-690 ◽  
Author(s):  
Mahyar Mohammadnezhad ◽  
Gurpreet Singh Selopal ◽  
Zhiming M. Wang ◽  
Barry Stansfield ◽  
Haiguang Zhao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Stability ◽  
Solar Cells ◽  
Multiwalled Carbon Nanotubes ◽  
Dye Sensitized Solar Cells ◽  
Multiwalled Carbon ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Thermal Stability Of

scholarly journals Cover Feature: Towards Long-Term Thermal Stability of Dye-Sensitized Solar Cells Using Multiwalled Carbon Nanotubes (ChemPlusChem 7/2018)

ChemPlusChem ◽  
2018 ◽  
Vol 83 (7) ◽  
pp. 546-546
Author(s):  
Mahyar Mohammadnezhad ◽  
Gurpreet Singh Selopal ◽  
Zhiming M. Wang ◽  
Barry Stansfield ◽  
Haiguang Zhao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Stability ◽  
Solar Cells ◽  
Multiwalled Carbon Nanotubes ◽  
Dye Sensitized Solar Cells ◽  
Multiwalled Carbon ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Thermal Stability Of

A comparison of acute and long-term effects of industrial multiwalled carbon nanotubes on human lung and immune cells in vitro

2011 ◽  
Vol 200 (3) ◽  
pp. 176-186 ◽  
Author(s):  
Tina Thurnherr ◽  
Christina Brandenberger ◽  
Kathrin Fischer ◽  
Liliane Diener ◽  
Pius Manser ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Immune Cells ◽  
Human Lung ◽  
Long Term Effects ◽  
Multiwalled Carbon

scholarly journals Long-Term Effects of Multiwalled Carbon Nanotubes and Graphene on Microbial Communities in Dry Soil

2016 ◽  
Vol 50 (7) ◽  
pp. 3965-3974 ◽  
Author(s):  
Yuan Ge ◽  
John H. Priester ◽  
Monika Mortimer ◽  
Chong Hyun Chang ◽  
Zhaoxia Ji ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Microbial Communities ◽  
Multiwalled Carbon Nanotubes ◽  
Long Term Effects ◽  
Multiwalled Carbon ◽  
Dry Soil
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