Preparation and application of carbon nanoparticle diode

Patent metadata

Field	Value
Publication number	US-2015314276-A1
Application number	US-201414494299-A
Country	US
Kind code	A1
Filing date	Sep 23, 2014
Priority date	May 2, 2014
Publication date	Nov 5, 2015
Grant date	—

Abstract

An oxidative method for water is provided. The oxidative method includes providing a compound having properties of a p-type semiconductor and an n-type semiconductor; obtaining a mixture by adding the compound to the water; and illuminating the mixture using a light source to excite the compound.

First claim

What is claimed is:

1 . An oxidative method for water, comprises:
providing a compound having properties of a p-type semiconductor and an n-type semiconductor; obtaining a mixture by adding the compound to the water; and illuminating the mixture using a light source to excite the compound.

2 . The oxidative method in claimed in claim 1 , wherein the light source has an excitation wavelength ranging from 200 nm to 900 nm.

3 . The oxidative method in claimed in claim 1 , wherein the water includes an organic material and an inorganic material.

4 . The oxidative method in claimed in claim 1 , wherein the compound has a quantum dot selected from a group consisting of a doped graphene oxide-quantum dot, a graphene oxide-quantum dot and a combination thereof.

5 . The oxidative method in claimed in claim 4 , wherein the doped graphene oxide-quantum dot has at least a functional group selected from a group consisting of an amino group (NH 2 —), a boron atom (B—), a hydrogen atom (H—), a hydroxyl group (—OH), a nitrogen atom (N—), an oxygen atom (O—), a phosphorus atom (P—) and a combination thereof.

6 . The oxidative method in claimed in claim 4 , wherein the doped graphene oxide-quantum dot has a carbon cluster serving as an interfacial junction.

7 . The oxidative method in claimed in claim 4 , wherein the doped graphene oxide-quantum dot is embedded with the nitrogen atom, and grafted with the oxygen atom.

8 . The oxidative method in claimed in claim 4 , wherein the doped graphene oxide-quantum dot has a particle size ranging from 6 nm to 10 nm, and a height ranging from 1 nm to 3 nm.

9 . The oxidative method in claimed in claim 4 , wherein the graphene oxide-quantum dot has bear a biological photosynthesis.

10 . A photocatalytic composite comprises a compound having properties of a p-type semiconductor and an n-type semiconductor.

11 . The photocatalytic composite as claimed in claim 10 , wherein the compound has a quantum dot selected from a group consisting of a doped graphene oxide-quantum dot, a graphene oxide-quantum dot and a combination thereof.

12 . The photocatalytic composite as claimed in claim 11 , wherein the doped graphene oxide-quantum dot has at least a functional group selected from a group consisting of an amino group (NH 2 —), a boron atom (B—), a hydrogen atom (H—), a hydroxyl group (—OH), a nitrogen atom (N—), an oxygen atom (O—), a phosphorus atom (P—) and a combination thereof.

13 . The photocatalytic composite as claimed in claim 11 , wherein the doped graphene oxide-quantum dot has a carbon cluster serving as an interfacial junction.

14 . The photocatalytic composite as claimed in claim 11 , wherein the doped graphene oxide-quantum dot is embedded with the nitrogen atom, and grafted with the oxygen atom. wherein the doped graphene oxide-quantum dot is embedded by the nitrogen atom, and grafted by the oxygen atom on a surface of the doped graphene oxide-quantum dot.

15 . The photocatalytic composite as claimed in claim 11 , wherein the doped graphene oxide-quantum dot has a particle size ranging from 6 nm to 10 nm, and a height ranging from 1 nm to 3 nm.

16 . The photocatalytic composite as claimed in claim 11 , wherein the graphene oxide-quantum dot has a band gap ranging from 0 to 7 eV.

17 . A photocatalytic method comprises amount of a composite providing a compound having properties of a p-type semiconductor and an n-type semiconductor of claim 1 to a subject.

18 . The photocatalytic method in claimed in claim 17 , wherein the compound is for hydrogen gas (H 2 ) or oxygen gas (O 2 ) generation from water.

19 . A luminescent composite comprises a compound having properties of a p-type semiconductor and an n-type semiconductor.

20 . The luminescent composite as claimed in claim 19 , wherein the compound has a quantum dot selected from a group consisting of a doped graphene oxide-quantum dot, a graphene oxide-quantum dot and a combination thereof.

21 . The luminescent composite as claimed in claim 19 , wherein the doped graphene oxide-quantum dot has at least a functional group selected from a group consisting of an amino group (NH 2 —), a boron atom (B—), a hydrogen atom (H—), a hydroxyl group (—OH), a nitrogen atom (N—), an oxygen atom (O—), a phosphorus atom (P—) and a combination thereof.

Assignees

• Univ Nat Cheng Kung

Inventors

• Teng Hsi-Sheng
• Yeh Te-Fu

Classifications

• B01J35/45

  Nanoparticles · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• B01J35/0013

  Operations & Transport · mapped topic

• B01J35/004

  Operations & Transport · mapped topic

• Y10S977/902

  Specified use of nanostructure · CPC title