P-induced bottom-up growth of Fe-doped Ni12P5 nanorod arrays for urea oxidation reaction

Wenjuan Xu; Yanru Feng; Zejun Sun; Liutao Guo; Chengrui Li; Hong Li; Yiming Wang; Hong-Bin Sun

doi:10.1016/j.jcis.2022.11.109

P-induced bottom-up growth of Fe-doped Ni₁₂P₅ nanorod arrays for urea oxidation reaction

J Colloid Interface Sci. 2023 Mar:633:746-753. doi: 10.1016/j.jcis.2022.11.109. Epub 2022 Nov 24.

Authors

Wenjuan Xu¹, Yanru Feng¹, Zejun Sun¹, Liutao Guo¹, Chengrui Li¹, Hong Li¹, Yiming Wang¹, Hong-Bin Sun²

Affiliations

¹ Department of Chemistry, Northeastern University, Shenyang 110819, People's Republic of China.
² Department of Chemistry, Northeastern University, Shenyang 110819, People's Republic of China. Electronic address: sunhb@mail.neu.edu.cn.

PMID: 36493740
DOI: 10.1016/j.jcis.2022.11.109

Abstract

Synthesis of regular morphology catalysts with self-growing substrates is one of the effective methods to solve the problem of easy shedding of heterogeneous catalysts. In this study, Fe-doped Ni₁₂P₅ nanorods were prepared by depositing 1,1' -bis (diphenylphosphine) ferrocene (DPPF) on N-doped C/NF. The bottom-up growth of the nanorod is ascribed to the preferential adsorption of DPPF with a P site to NF that is surface-doped with the solid-solving C, and the length of nanorods can reach tens of microns and has good robustness. The N-doped carbon-constrained rod-shaped Fe-doped Ni₁₂P₅ catalyst (Fe-Ni₁₂P₅/N_dC/NF-800) that grows on NF has excellent catalytic performance for the urea oxidation reaction. In addition, the current density can be maintained as high as 100 mA cm^-2 and the current attenuation is weak for 12 h, and the rod shape remains good. This work provides a new idea for synthesizing self-growing catalysts with regular morphology to improve the performance of heterogeneous catalysts.

Keywords: Bottom-up growth; Fe doping; Nanorod Ni(12)P(5); Phosphorus induction; Urea oxidation reaction.