Jump to main content
Jump to site search

Issue 10, 2018
Previous Article Next Article

Magnetic N-doped Co–carbon composites derived from metal organic frameworks as highly efficient catalysts for p-nitrophenol reduction reaction

Author affiliations

Abstract

Magnetic nitrogenous cobalt–carbon composites were synthesized via calcination of N-ZIF-67, where metal and N atoms were introduced into the conductive carbon matrix formed during carbonization of N-ZIF-67, and were applied, as catalysts, in the reduction reaction of p-nitrophenol, assisted by NaBH4. Characterization of the prepared composites was carefully performed using SEM, TEM, XRD, SQUID magnetometric analysis, XPS and nitrogen adsorption/desorption measurements. Compared to Co@C, which was similarly prepared, the N-Co@C catalyst exhibits much better catalytic activity for the reduction of 4-nitrophenol to 4-aminophenol. The pseudo-first-order rate constant for the N-Co@C catalyst is 4.47 times greater than that for the Co@C catalyst, and its stability shows little change after five reaction cycles. The superior catalytic properties of the N-Co@C catalyst are due to the presence of N moieties. Leaching out the cobalt cores was induced using FeCl3 and HCl to see what the active centers were. The results show that the majority of the catalytic activity is associated with the metal cores.

Graphical abstract: Magnetic N-doped Co–carbon composites derived from metal organic frameworks as highly efficient catalysts for p-nitrophenol reduction reaction

Back to tab navigation

Supplementary files

Publication details

The article was received on 16 Nov 2017, accepted on 30 Jan 2018 and first published on 30 Jan 2018


Article type: Paper
DOI: 10.1039/C7DT04272H
Citation: Dalton Trans., 2018,47, 3321-3328
  •   Request permissions

    Magnetic N-doped Co–carbon composites derived from metal organic frameworks as highly efficient catalysts for p-nitrophenol reduction reaction

    H. Zhao and L. Zhao, Dalton Trans., 2018, 47, 3321
    DOI: 10.1039/C7DT04272H

Search articles by author

Spotlight

Advertisements