Method for producing nanodiamonds doped with group 14 element, and method for purifying same
AssigneeDaicel Corporation
InventorsTomoaki Mahiko, Yuto Makino, Akihiko Tsurui, Ming Liu, Masahiro Nishikawa
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Abstract
The present invention is to provide a method for producing nanodiamonds doped with a Group 14 element, the method comprising: detonating by exploding an explosive composition containing at least one explosive and at least one Group 14 element compound in a sealed container to obtain nanodiamonds doped with at least one Group 14 element selected from the group consisting of Si, Ge, Sn, and Pb, and removing the Group 14 element and/or oxide thereof by subjecting the nanodiamonds doped with a Group 14 element to an alkali treatment.
Claims14
A method for producing a nanodiamond doped with a Group 14 element selected from the group consisting of Si, Ge, Sn, and Pb, the method comprising:
- subjecting a nanodiamond composition to an alkali treatment to remove the Group 14 element and/or oxide thereof, wherein the nanodiamond composition comprises a nanodiamond doped with the Group 14 element, a Group 14 element and/or an oxide thereof,
- a ratio (H/D) of a peak area (H) of a surface hydroxy group (OH) to a peak area (D) of diamond by Raman spectroscopy is from 0.1 to 5, and
- a ratio (C/D) of a peak area (C) of a surface carbonyl group (CO) to a peak area (D) of diamond by Raman spectroscopy is from 0.01 to 1.
A method for purifying a nanodiamond doped with a Group 14 element selected from the group consisting of Si, Ge, Sn, and Pb, the method comprising:
- subjecting a nanodiamond composition thereof wherein the nanodiamond composition comprises a nanodiamond doped with the Group 14 element, a Group 14 element and/or an oxide thereof;
- wherein the Group 14 element and/or oxide thereof are removed from the nanodiamond composition by the alkali treatment;
- a ratio (H/D) of a peak area (H) of a surface hydroxy group (OH) to a peak area (D) of diamond by Raman spectroscopy is from 0.1 to 5, and
- a ratio (C/D) of a peak area (C) of a surface carbonyl group (CO) to a peak area (D) of diamond by Raman spectroscopy is from 0.01 to 1.5.
Dependencies are inferred from the claim text.