Generalized Synthesis of Metal Phosphide Nanorods via Thermal Decomposition of Continuously Delivered Metal-Phosphine Complexes Using a Syringe Pump

摘要

We synthesized uniform-sized nanorods of transition metal phosphides from the thermal decomposition of continuously delivered metal-phosphine complexes using a syringe pump.MnP nanorods with dimensions of 8 nm X 16 nm and 6 nm X 22 nm sized were synthesized by the thermal decomposition of Mn-TOP complex,which was prepared from the reaction of Mn_2(CO)_(10)and tri-n-octylphosphine(TOP),using a syringe pump with constant injection rates of 10 and 20 mL/h,respectively.When Co-TOP complex,which was prepared from the reaction of cobalt acetylacetonate and TOP,was reacted in a mixture solvent composed of octyl ether and hexadecylamine at 300 deg C using a syringe pump,uniform 2.5 nm x 20 nm sized CO_2P nanorods were generated.When cobaltocene was employed as a precursor,uniform Co_2P nanorods with 5 nm x 15 nm were obtained.When Fe-TOP complex was added to trioctylphosphine oxide(TOPO)at 360 deg C using a syringe pump and then allowed to age at 360 deg C for 30 min,uniform-sized FeP nanorods with an average dimension of 12 nm x 500 nm were produced.Nickel phosphide(Ni_2P)nanorods with 4 nm X 8 nm were synthesized successfully by thermally decomposing the Ni-TOP complex,which was synthesized by reacting acetylacetonate [Ni(acac)_2] and TOP.We measured the magnetic properties of these nanorods,and some of the nanorods exhibited different magnetic characteristics compared to the bulk counterparts.