Metal sulfide and rare-earth phosphate nanostructures and methods of making same

Patent metadata

Field	Value
Publication number	US-9377464-B2
Application number	US-201414243418-A
Country	US
Kind code	B2
Filing date	Apr 2, 2014
Priority date	Jan 15, 2010
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

The present invention provides a method of producing a crystalline rare earth phosphate nanostructure. The method comprising: providing a rare earth metal precursor solution and providing a phosphate precursor solution; placing a porous membrane between the metal precursor solution and the phosphate precursor solution, wherein metal cations of the metal precursor solution and phosphate ions of the phosphate precursor solution react, thereby producing a crystalline rare earth metal phosphate nanostructure.

First claim

The invention claimed is:

1. A method of producing a crystalline rare earth phosphate nanostructure, the method comprising:
providing a rare earth metal precursor solution and providing a phosphate precursor solution;
placing a porous membrane between the rare earth metal precursor solution and the phosphate precursor solution, thereby placing the precursor solutions into contact at a slow rate, wherein metal cations of the rare earth precursor solution and phosphate ions of the phosphate precursor solution react, thereby producing a crystalline rare earth phosphate nanostructure.

2. A method of claim 1 wherein the rare earth metal is selected from the group consisting of cerium, lanthanum, terbium and samarium, or mixtures thereof.

3. A method of claim 1 further comprising doping the rare earth metal precursor solution with a different rare earth metal.

4. A method of claim 3 wherein the rare earth phosphate nanostructure is cerium phosphate doped with terbium.

5. The method of claim 1 wherein the rare earth phosphate nanostructure is single crystalline.

6. The method of claim 1 wherein rare earth cations and phosphate ions predominantly nucleate to form rare earth phosphates within the confines of the pores.

7. The method of claim 1 wherein the crystalline nanostructure is in a sheaf-like bundle formation.

8. The method of claim 1 wherein the crystalline nanostructure is CePO 4 in a sheaf-like bundle formation.

Assignees

• Univ New York State Res Found
• Res Foundation For The State Of University Of New York

Inventors

• Wong Stanislaus
• Zhang Fen

Classifications

• C01P2002/72

  by d-values or two theta-values, e.g. as X-ray diagram · CPC title

• C01G21/21

  Sulfides · CPC title

• C09K11/661

  Chalcogenides · CPC title

• C09K11/582

  Chalcogenides · CPC title

• C30B29/50

  Cadmium sulfide · CPC title