Bi-Metal Phosphide NiCoP: An Enhanced Catalyst for the Reduction of 4-Nitrophenol.

Author(s) Sun, L.; Xiang, X.; Wu, J.; Cai, C.; Ao, D.; Luo, J.; Tian, C.; Zu, X.
Journal Nanomaterials (Basel)
Date Published 2019 Jan 18

Porous phosphide NiCoP composite nanomaterials are successfully synthesized at different Ni/Co ratios (=0, 0.5, 1, and 2) to reduce 4-nitrophenol. The X-ray diffraction and X-ray photoelectron spectroscopy results demonstrate that the products are CoP, NiCoP/CoP, NiCoP, and NiCoP/Ni₂P when the Ni/Co ratio is 0, 0.5, 1, and 2, respectively. The products exhibit different catalytic performance for reduction of 4-nitrophenol at room temperature. Among them, the pure NiCoP delivers a better catalytic efficiency with k app = 677.4 × 10 - 2   min - 1 and k = 338.7   ( Lg - 1 min - 1 ) , due to the synergy between Ni and Co atoms. The sequence of catalytic efficiency of different samples is CoP < NiCoP/CoP < NiCoP/Ni₂P < NiCoP.

DOI 10.3390/nano9010112
ISSN 2079-4991
Citation Nanomaterials (Basel). 2019;9(1).

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