Metal phosphide catalysts and methods for making the same and uses thereof
The present disclosure relates to a method that includes heating a mixture that includes a metal phenylphosphine-containing precursor that includes at least one of Mo(PPh 3 ) 2 (CO) 4 , Pd(PPh 3 ) 4 , Ru(PPh 3 ) 3 Cl 2 , Ru(PPh 3 ) 2 (CO) 2 Cl 2 , Co(PPh 3 )(CO) 2 (NO), and/or Rh(PPh 3 ) 2 (CO)Cl, a surfactant, and a solvent. The heating is to a target temperature to form a heated mixture containing a metal phosphide nanoparticle that includes at least one of MoP, Ru 2 P, Co 2 P, Rh 2 P, and/or Pd 3 P, and the metal phosphide nanoparticle is not hollow.
1. A method comprising:
heating to a target temperature a mixture comprising:
a metal phenylphosphine- and carbonyl-containing precursor comprising at least one of Mo(PPh 3 ) 2 (CO) 4 , Ru(PPh 3 ) 2 (CO) 2 Cl 2 , Co(PPh 3 )(CO) 2 (NO), or Rh(PPh 3 ) 2 (CO)Cl;
oleylamine; and
1-octadecene, wherein:
the heating results in a mixture containing a metal phosphide nanoparticle comprising at least one of MoP, Ru 2 P, Co 2 P, or Rh 2 P, and
the target temperature is between 250° C. and 320° C.
2. The method of claim 1 , wherein the target temperature is maintained for a time period between 15 minutes and 4 hours.
3. The method of claim 1 , wherein
the metal phosphide nanoparticle comprises at least one of a hexagonal crystal structure or a cubic crystal structure.
4. The method of claim 1 , wherein the metal phosphide nanoparticle has an XRD spectrum that exhibits suppression or elimination of a peak for 2θ between 42° and 46°.
5. The method of claim 1 , wherein the metal phosphide nanoparticle has an average particle size between 2 nm and 50 nm.
6. The method of claim 1 , further comprising separating the metal phosphide nanoparticle from the mixture.
7. The method of claim 6 , wherein the separating is performed by centrifugation.
8. The method of claim 1 , wherein the metal phosphide nanoparticle is not hollow.