Table 1.
Important parameters of the commercial samples used in this research. The symbols in the table represent the following terms: ACSM: ACS Materials; GS: Graphene Supermarket; NAM: Nanostructured and Amorphous Materials; CT: Cheap Tubes; Nan: Nanocs.net; GR: Graphene; GO: Graphene oxide; C: Carbon; DC: Disordered Carbon. Separation of the samples in Group B into B(1) and B(2) based on XRD is discussed in the text.
| Sample | Commercial name | Commercial source | Group | Phase detected | I(D)/I(G) |
|---|---|---|---|---|---|
| 1 | Graphene nanoplates (2–10 nm) | ACSM | A | GR | 0.22 |
| 2 | Graphene oxide | ACSM | B(1) | GO | 1.46 |
| 3 | Carboxyl graphene | ACSM | B(1) | GO | 1.50 |
| 4 | Single layer graphene (nitrogen doped) | ACSM | C | DC | 1.92 |
| 5 | Single layer graphene | ACSM | C | DC | 1.96 |
| 6 | Graphene nanopowder (12 nm flakes-A03) | GS | A | GR | 1.09 |
| 7 | Graphene nanopowder (8 nm flakes-A02) | GS | A | GR | 1.33 |
| 8 | Graphene nanopowder (multilayer flakes-A04) | GS | A | GR | 0.70 |
| 9 | High porosity reduced graphene oxide | GS | B(2) | C | 1.54 |
| 10 | Graphene nanopowder (3 nm-A01) | GS | B(2) | C | 1.55 |
| 11 | Graphene nanopowder | NAM | C | DC | 1.73 |
| 12 | Few layer graphene oxide (2–4 layers) | CT | B(1) | GO | 1.56 |
| 13 | Graphene oxide reduced | Nan | B(2) | C | 1.60 |
| 14 | Few layer graphene oxide (4–8 layers) | CT | A | GR | 0.99 |
| 15 | Graphene nanoplates (grade 4, 99% COOH rich) | CT | A | GR | 0.83 |
| 16 | Graphene nanoplates (grade 4, 99% N2 rich) | CT | A | GR | 0.82 |