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Simple Hydrothermal Synthesis for Mesoporous Pebble-Like NiCo2O4 Nanostructures and Their Attractive Magnetic Properties

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Abstract

The mesoporous pebble-like NiCo2O4 nanostructures were smoothly obtained via a simple hydrothermal route and the succeeding annealing treatment. Various techniques, including XRD, SEM, TEM, Raman spectra, FTIR, and MH curves have been used to study the obtained products. The obtained results exhibited that the morphology of spinel NiCo2O4 could be controlled by adjusting the content of cetyltrimethylammonium bromide (CTAB). The morphology of NiCo2O4 nanostructures transformed from a 300-nm popcorn-like to 30–40-nm pebble-like nanostructure by changing the content of CTAB. Compared with the popcorn-like NiCo2O4 nanostructures, the pebble-like samples showed effective blue shifting of Raman spectroscopy, which might be due to the nano-sized effect of NiCo2O4 particles. Finally, vibration sample magnetometer (VSM) measurements indicated the samples transformed from weak ferromagnetic (popcorn-like) to paramagnetic (pebble-like) due to small particle size.

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Funding

The work was supported by the Important Project of Outstanding Youth Talents in Higher Education Institution (gxfxZD2016258), Important Project of Anhui Provincial Education Department (KJ2016A889), Innovative Research Team of Anhui Provincial Education Department (2016SCXPTTD), Key Discipline of Material Science and Engineering of Suzhou University (2017XJZDXK3), and the Candidates of the Third Group of Academic Leaders for Suzhou University (2018XJHB05)

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  1. Anhui Key Laboratory of Spin Electron and Nanomaterials, Suzhou University, Suzhou, 234000, People’s Republic of China

    Wenqi Wang & Wumei Ye

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  1. Wenqi Wang
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  2. Wumei Ye
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Correspondence to Wenqi Wang.

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Wang, W., Ye, W. Simple Hydrothermal Synthesis for Mesoporous Pebble-Like NiCo2O4 Nanostructures and Their Attractive Magnetic Properties. J Supercond Nov Magn 31, 3989–3994 (2018). https://doi.org/10.1007/s10948-018-4672-1

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  • DOI: https://doi.org/10.1007/s10948-018-4672-1

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