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DNA damage induced by multiwalled carbon nanotubes in mouse embryonic stem cells.
The results suggest that careful scrutiny of the genotoxicity of nanomaterials is needed even for those materials, like multiwalled carbon nanotubes, that have been previously demonstrated to have limited or no toxicity at the cellular level.
Carbon nanomaterials for advanced energy conversion and storage.
Progress in the research and development of carbon nanomaterials during the past twenty years or so for advanced energy conversion and storage is reviewed, along with some discussions on challenges and perspectives in this exciting field.
BCN graphene as efficient metal-free electrocatalyst for the oxygen reduction reaction.
This work has previously prepared vertically aligned nitrogendoped carbon nanotubes as ORR electrocatalysts, which are free from anode crossover and CO poisoning and show a threefold higher catalytic activity and better durability than the commercial Pt/C catalyst.
Graphene for energy conversion and storage in fuel cells and supercapacitors
Polyaniline-grafted reduced graphene oxide for efficient electrochemical supercapacitors.
- Nanjundan Ashok Kumar, Hyun‐Jung Choi, Yeon-Ran Shin, D. Chang, L. Dai, J. Baek
- Materials ScienceACS nano
- 3 February 2012
Electron microscopic studies demonstrated that the resultant composite has fibrillar morphology with a room-temperature electrical conductivity as high as 8.66 S/cm and capacitance of 250 F/g with good cycling stability.
Polyelectrolyte-functionalized graphene as metal-free electrocatalysts for oxygen reduction.
G graphene positively charged via intermolecular charge-transfer with PDDA was demonstrated to show remarkable electrocatalytic activity toward ORR with better fuel selectivity, tolerance to CO posing, and long-term stability than that of the commercially available Pt/C electrode.
Functionalization of Carbon Nanotubes
This chapter will focus and discuss the frequently used methods to functionalize CNTs namely; covalent and non-covalent strategies.
Preparation of poly(vinyl alcohol)/silver-zeolite composite hydrogels by UV-irradiation
- Min Jae Kim, T. Oh, S. Han, S. Joo, H. Jeon, D. Chang
- Materials Science, ChemistryFibers and Polymers
- 28 January 2014
Poly(vinyl alcohol) (PVA)/Ag-zeolite nanocomposite hydrogels were prepared by UV irradiation using PVA solution mixed with Ag-zeolite nanoparticles. Physical properties and changes in morphology of…
Novel quinoxaline-based organic sensitizers for dye-sensitized solar cells.
The relatively high power conversion efficiencies of 3.30 and 5.56% for RC-21 and RC-22, respectively indicates that the quinoxaline electron-accepting unit is quite a promising candidate in organic sensitizers.