TY - JOUR
T1 - Ultrafine Ni2P Nanoparticle-Decorated r-GO
T2 - A Novel Liquid-Phase Approach and Dibenzothiophene Hydro-desulfurization
AU - Tzitzios, Vasileios
AU - Pillai, Vishnu
AU - Gioti, Christina
AU - Katsiotis, Marios
AU - Karagiannis, Thomas
AU - Gournis, Dimitrios
AU - Karakassides, Michael A.
AU - Alhassan, Saeed
N1 - Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021/3/24
Y1 - 2021/3/24
N2 - Nanostructured transition metal phosphides, in the last few years, have attracted increased scientific interest, due to their unique physicochemical properties. Nickel phosphide nanoparticles, with controllable crystal structures, from metal-rich tetragonal Ni12P5 to phosphorous-rich hexagonal Ni2P, and hexagonal close-packed (hcp) Ni2P-decorated reduced graphene oxide (r-GO) nanohybrid materials have been synthesized via a novel one-step liquid-phase approach in primary-tertiary aliphatic amine mixtures. The nanoparticles are monodispersed, have a spherical shape and a controllable size in the sub-10 nm regime, and uniformly decorate the surface of r-GO, leading to the formation of Ni2P/r-GO hybrid materials. The materials were characterized using powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and Raman spectroscopy and catalytically evaluated for the dibenzothiophene hydro-desulfurization (HDS) reaction. The results clearly demonstrated that the role of the tertiary amine is crucial for the phosphidation process. In addition, r-GO has been proven to be ideal alternative support to the traditional inorganic ones for the immobilization of the catalytically active component, preventing significant sintering effects.
AB - Nanostructured transition metal phosphides, in the last few years, have attracted increased scientific interest, due to their unique physicochemical properties. Nickel phosphide nanoparticles, with controllable crystal structures, from metal-rich tetragonal Ni12P5 to phosphorous-rich hexagonal Ni2P, and hexagonal close-packed (hcp) Ni2P-decorated reduced graphene oxide (r-GO) nanohybrid materials have been synthesized via a novel one-step liquid-phase approach in primary-tertiary aliphatic amine mixtures. The nanoparticles are monodispersed, have a spherical shape and a controllable size in the sub-10 nm regime, and uniformly decorate the surface of r-GO, leading to the formation of Ni2P/r-GO hybrid materials. The materials were characterized using powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and Raman spectroscopy and catalytically evaluated for the dibenzothiophene hydro-desulfurization (HDS) reaction. The results clearly demonstrated that the role of the tertiary amine is crucial for the phosphidation process. In addition, r-GO has been proven to be ideal alternative support to the traditional inorganic ones for the immobilization of the catalytically active component, preventing significant sintering effects.
UR - http://www.scopus.com/inward/record.url?scp=85103468633&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.0c05544
DO - 10.1021/acs.iecr.0c05544
M3 - Article
AN - SCOPUS:85103468633
SN - 0888-5885
VL - 60
SP - 4300
EP - 4309
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 11
ER -