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Graphene oxide/resorcinol–formaldehyde microsphere (GORFM) was synthesised by a simple-inverse suspension polymerisation under ambient pressure drying and the graphene composite microsphere (GCM) was obtained by carbonisation in a nitrogen atmosphere. The morphologies and microstructures of GORFM and GCM samples were characterised by scanning electron microscopy, Fourier transform infrared spectroscopy,...
The oxidation performance of heterogeneous pitch fibers formed by blending a coal tar-derived isotropic pitch (IPc) and a naphthalene-derived mesophase pitch (MPn) was studied. The role of IPc in affecting the oxidation performance of such heterogeneous fibers was illustrated. The IPc spherical domains distributed in the MPn matrix facilitate the reduction of oxidization time and the decrease of the...
Strategic design of gadofullerene derivatives is critical to integrate multifunctionality into one entity. Herein, an easy method was developed to fabricate a new type of magnetic resonance imaging/fluorescent integrative molecular imaging probe based on Gd@C 82 . The functionalized gadofulleride Gd@C 82 O ∼14 (OH) ∼14 (NH 2 ) ∼6 not only exhibits an...
Non-metallic fractions of FR-3 type waste printed circuit boards were pyrolyzed at high temperatures. The resultant char at 600°C was used to prepare activated carbons by physical and chemical activation. The influence of pyrolysis temperature on char yields, and activation conditions on the burn-off and porous properties of the activated carbons were investigated. Results show that char yields decrease...
A method to form self-aligned carbon nanotube (CNT) vias using a Ta-cap layer on a Co catalyst by chemical vapor deposition at 400°C is described. The Ta-cap layer protects the Co catalyst from oxidation. This protection potentially eliminated the need for additional processing steps to control the size and activity of the Co catalyst, which are two critical parameters for CNT formation. The Ta-cap...
Polymer chains are chemically bonded to multi-walled carbon nanotubes (MWCNTs) through an ozone-mediated process. Four polymers, poly(vinylidene fluoride) (PVDF), polysulfone (PSF), poly(2,6-dimethylphenylene oxide), and poly(phthalazinone ether ketone) are used to demonstrate this MWCNT functionalization. MWCNT–polymer hybrids are characterized by Fourier transform infrared spectroscopy, Raman spectrometry,...
Functionalization of multi-walled carbon nanotubes (MWCNTs) is performed through Diels–Alder (DA) reaction, using either furfuryl alcohol (a diene) or N-(4-hydroxyphenyl)maleimide (NHMI, a dienophile) as a functionalization agent. The structures of the functionalized MWCNTs are characterized with Fourier-transform infrared spectroscopy and Raman spectroscopy. Thermogravimetric analysis results also...
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