Solvent-Tuned Synthesis of Mesoporous Nickel Cobaltite Nanostructures and Their Catalytic Properties

Xiangfeng Guan,Yunlong Yu,Dagui Chen,Peihui Luo,Xiaoyan Li

doi:10.3390/app9061100

Xiangfeng Guan, Yunlong Yu + Show 3 more

Open Access

https://doi.org/10.3390/app9061100

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Journal: Applied sciences	Publication Date: Mar 15, 2019
Citations: 9	License type: CC BY 4.0

Affiliation: Fujian Jiangxia University

Abstract

In this paper, we prepared mesoporous nickel cobaltite (NiCo2O4) nanostructures with multi-morphologies by simple solvothermal and subsequent heat treatment. By adjusting the solvent type, mesoporous NiCo2O4 nanoparticles, nanorods, nanowires, and microspheres were easily prepared. The as-prepared products were systematically characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET) method. Furthermore, the catalytic activities towards the thermal decomposition of ammonium perchlorate (AP) of as-prepared NiCo2O4 nanostructures were investigated.

Highlights

It is well known that the properties of materials are closely related to their structures and morphologies [1]
The reason is that the mesoporous structure can provide electron or ion transport channels, more reactive sites, and transport channels of reactants, which makes this structure applied in many important fields [3]
When using ethanol and deionized water as reaction solvent, the resultant product was composed of aggregates of nanoparticles with about 30–40 nm in diameter (Figure 2a)

Summary

Introduction

It is well known that the properties of materials are closely related to their structures and morphologies [1]. The controlled synthesis of mesoporous structures has become one of the hotspots in the research of new functional materials [2]. The reason is that the mesoporous structure can provide electron or ion transport channels, more reactive sites, and transport channels of reactants, which makes this structure applied in many important fields [3]. As an important functional material, spinel nickel cobaltite (NiCo2 O4 ) has been intensively applied in electrochemical and catalytic fields due to its good electronic conductivity, multiple convertible valence state, and excellent electrochemical and catalytic activity [4,5,6]. The fabrication of mesoporous nanostructure of NiCo2 O4 has attracted much attention. Various mesoporous NiCo2 O4 nanostructures have been widely investigated and demonstrated significantly improved properties.

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Results

Conclusion