Hydrothermal synthesis and characterization of NiS flower-like architectures--颗粒学报PARTICUOLOGY

Zhou, H., Lv, B., Wu, D., & Sun, Y. (2012). Hydrothermal synthesis and characterization of NiS flower-like architectures. Particuology, 10(6), 783–788. https://doi.org/10.1016/j.partic.2012.03.004

Hydrothermal synthesis and characterization of NiS flower-like architectures

Hai Zhou ^{a c}, Baoliang Lv ^a *, Dong Wu ^a, Yuhan Sun ^{a b}

a Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
b Low Carbon Conversion Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, China
c Graduate University of the Chinese Academy of Science, Beijing 100049, China

10.1016/j.partic.2012.03.004

Volume 10, Issue 6, December 2012, Pages 783-788

Received 15 December 2011, Revised 9 March 2012, Accepted 13 March 2012, Available online 16 May 2012.

E-mail: lbl604@sxicc.ac.cn

Highlights

► NiS flower-like architectures were synthesized in the presence of SCN⁻ anions and cetyltrimethyl ammonium bromide.

► Diffusion-limited aggregation model and cage effect were used to explain the formation process.

► As-obtained NiS flower-like architectures possess weak ferromagnetic interactions.

Abstract

Under the influence of thiocyanate anions (SCN⁻) and cetyltrimethyl ammonium bromide (CTAB), NiS flower-like architectures were successfully synthesized by a one-step hydrothermal method. The synthesized flower-like architectures, with a multilayered and highly ordered texture, have diameters of several micrometers. X-ray powder diffraction (XRD) shows that the NiS flower-like architectures are rhombohedral crystalline. On the basis of condition-dependent experiments, the diffusion-limited aggregation (DLA) model and cage effect were used to explain the growth process of rhombohedral crystalline NiS flower-like architectures. Magnetic measurements showed that the coercivity (H_c) of the as-obtained NiS flower-like architectures was 102.14 Oe.

Graphical abstract

Keywords

Nanostructures; Chemical synthesis; Electron microscopy; Magnetic properties

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