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

Lijie Sun; Xia Xiang; Juwei Wu; Chao Cai; Dongyi Ao; Jinling Luo; Chengxiang Tian; Xiaotao Zu

doi:10.3390/nano9010112

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

Nanomaterials (Basel). 2019 Jan 18;9(1):112. doi: 10.3390/nano9010112.

Authors

Lijie Sun¹, Xia Xiang², Juwei Wu³, Chao Cai⁴, Dongyi Ao⁵, Jinling Luo⁶, Chengxiang Tian⁷, Xiaotao Zu⁸

Affiliations

¹ School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China. sunlijie09@std.uestc.edu.cn.
² School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China. xiaxiang@uestc.edu.cn.
³ School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China. wu756070691@gmail.com.
⁴ Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China, Chengdu 610054, China. ZChaoC@yahoo.com.
⁵ School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China. aodongyi@outlook.com.
⁶ School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China. luojinling0803@gmail.com.
⁷ School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China. tianchengxiangky@163.com.
⁸ Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China, Chengdu 610054, China. xtzu@uestc.edu.cn.

Abstract

Porous phosphide Ni_xCo_yP 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.

Keywords: efficiency; hydrogenation; phosphating cobalt nickel; reduction 4-NP.

Grants and funding

U1630126/NSAF Joint Fund