Issue 1, 2019

Flower-like 3-dimensional hierarchical Co3O4/NiO microspheres for 4-nitrophenol reduction reaction

Abstract

Aromatic nitro compounds are toxic and not biodegradable. Therefore, the elimination of nitro groups is very important. Metal catalysts play an important role in the catalytic transformation. We present here flower-like 3D hierarchical Co3O4/NiO microspheres, which are prepared by a chemical precipitation method. The as-prepared catalyst is characterized by FTIR, SEM, TEM, EDS, XRD, XPS and N2 sorption isotherms. They have shown different morphologies such as flower, nanocubes, and hexagonal structure at different calcined temperatures. The synthesized catalyst is tested and used for the reduction of 4-nitrophenol to 4-aminophenol in the presence of sodium borohydride as a reducing agent. The reaction takes place in an aqueous medium at room temperature. The bimetallic catalyst Co3O4/NiO showed good performance and reusability.

Graphical abstract: Flower-like 3-dimensional hierarchical Co3O4/NiO microspheres for 4-nitrophenol reduction reaction

Article information

Article type
Paper
Submitted
11 Jun 2018
Accepted
25 Aug 2018
First published
13 Sep 2018
This article is Open Access
Creative Commons BY-NC license

Nanoscale Adv., 2019,1, 305-313

Flower-like 3-dimensional hierarchical Co3O4/NiO microspheres for 4-nitrophenol reduction reaction

A. Chinnappan, S. K. Eshkalak, C. Baskar, M. Khatibzadeh, E. Kowsari and S. Ramakrishna, Nanoscale Adv., 2019, 1, 305 DOI: 10.1039/C8NA00029H

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