A nanocarbon separation device includes a separation tank that is configured to accommodate a dispersion liquid including nanocarbons, a first electrode provided at an upper part in the separation tank, a second electrode provided at a lower part in the separation tank, an evaluation unit that is configured to evaluate a physical state or a chemical state of the dispersion liquid, and a determination unit that is configured to determine a separation state between metallic nanocarbons and semiconducting nanocarbons included in the dispersion liquid from the physical state or the chemical state.

A fullerene derivative having a C60 fullerene group and a group of a compound of formula (1), a compound of formula (2), and/or a compound of formula (3) attached thereto, where the structural formulas of the compounds of formula (1), formula (2), and formula (3) are as follows:

##STR00001##

##STR00002##

##STR00003##

where R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, n1, n2, n3, m1, m2, and m3 are as defined in the specification.

A fullerene derivative having a C60 fullerene group and a group of a compound of formula (1), a compound of formula (2), and/or a compound of formula (3) attached thereto, where the structural formulas of the compounds of formula (1), formula (2), and formula (3) are as follows:

##STR00001##

##STR00002##

##STR00003##

where R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, n1, n2, n3, m1, m2, and m3 are as defined in the specification.

A process for the separation of electrolyte from the carbon in a solid carbon/electrolyte cathode product formed at the cathode during molten carbonate electrolysis. The processes allows for easy separation of the solid carbon product from the electrolyte without any observed detrimental effect on the structure and/or stability of the resulting solid carbon nanomaterial.

The present disclosure relates to a two-dimensional polymeric fullerene and preparation method thereof, wherein the preparation method includes the following steps: providing metal intercalated polymeric fullerene; replacing metal ions in the metal intercalated polymeric fullerene with quaternary ammonium salts. The preparation method of the two-dimensional polymeric fullerene of an embodiment of the present application has simple process and low cost, which can achieve large-scale preparation of two-dimensional polymeric fullerene.

The present disclosure relates to a two-dimensional polymeric fullerene and preparation method thereof, wherein the preparation method includes the following steps: providing metal intercalated polymeric fullerene; replacing metal ions in the metal intercalated polymeric fullerene with quaternary ammonium salts. The preparation method of the two-dimensional polymeric fullerene of an embodiment of the present application has simple process and low cost, which can achieve large-scale preparation of two-dimensional polymeric fullerene.

A process for the separation of electrolyte from the carbon in a solid carbon/electrolyte cathode product formed at the cathode during molten carbonate electrolysis. The processes allows for easy separation of the solid carbon product from the electrolyte without any observed detrimental effect on the structure and/or stability of the resulting solid carbon nanomaterial.

An optical filter may comprise a layer structure comprising a plurality of layers stacked in a thickness direction of the layer structure and including: a plurality of nano-photonic layers formed of a nano-photonic material with icosahedral or dodecahedral symmetry and at least one substrate layer formed of an optically transparent material, wherein one of the at least one substrate layer is positioned between two of the plurality nano-photonic layers in the thickness direction of the layer structure.

A nanocarbon separation device of the present invention includes a separation tank which is configured to accommodate a dispersion liquid including a nanocarbon, a first electrode that is provided at an upper part in the separation tank, a second electrode that is provided at a lower part in the separation tank, and a porous structure that is provided between the first electrode and the second electrode in the separation tank.

A process for the separation of electrolyte from the carbon in a solid carbon/electrolyte cathode product formed at the cathode during molten carbonate electrolysis. The processes allows for easy separation of the solid carbon product from the electrolyte without any observed detrimental effect on the structure and/or stability of the resulting solid carbon nanomaterial.