High-densification, high-uniformization, and manufacturing method of single- and multi-component nanoparticles
The present application relates to a composite structure, a method of manufacturing the composite structure, and a catalyst including the same. In the composite structure of the present application, metal nanoparticles having a very small size are uniformly formed at a high density regardless of a type of metal. The method of manufacturing the composite structure of the present application can quickly prepare the composite structure in which metal nanoparticles having a very small size are formed uniformly at a high density regardless of the type of metal.
1 . A composite structure comprising:
a cellulose-derived carbon layer; and
a metal layer present on the cellulose-derived carbon layer,
wherein the metal layer includes metal nanoparticles,
wherein metal of the metal nanoparticles is at least one selected from the group consisting of Ni, Co, Au, Fe, Pt, Pd, Ag, Si, Ir, Cu, Ru, Rh, Sn, Zn, Ce, Hf, Ti and Mn,
wherein the cellulose-derived carbon layer includes carbon nanoclusters having an aromatic ring, and
wherein a ratio (IG/ID) of a peak intensity (IG) within a wavenumber range of 1550 cm −1 to 1600 cm −1 of a Raman spectrum of the cellulose-derived carbon layer and a peak intensity (ID) within a wavenumber range of 1300 cm 1 to 1400 cm 1 of a Raman spectrum of the cellulose-derived carbon layer is 2.2 or less.
2 . The composite structure of claim 1 , wherein the ratio (IG/ID) of the peak intensity (IG) within the wavenumber range of 1550 cm −1 to 1600 cm −1 of a Raman spectrum of the cellulose-derived carbon layer and the peak intensity (ID) within the wavenumber range of 1300 cm −1 to 1400 cm −1 of a Raman spectrum of the cellulose-derived carbon layer ranges from 1.65 to 1.8.
3 . The composite structure of claim 1 , further comprising a conductive carbon layer,
wherein the cellulose-derived carbon layer is present on the conductive carbon layer.
4 . The composite structure of claim 3 , wherein the conductive carbon layer includes at least one of carbon paper, carbon nanofibers, carbon nanotubes, graphene, and graphene oxide.
5 . The composite structure of claim 1 , wherein the carbon nanoclusters further include heteroatoms.
6 . The composite structure of claim 5 , wherein the heteroatom is oxygen.
7 . The composite structure of claim 1 , wherein an average size (D50) of the metal nanoparticle ranges from 1 nm to 150 nm.
8 . The composite structure of claim 1 , wherein the metal nanoparticles are nanoparticles of a single metal.
9 . The composite structure of claim 1 , wherein the metal nanoparticles are nanoparticles of an alloy.