关键词: 层状硅酸镍, 合成方法, 改性策略, 前体, 电极材料, 磁性载体, Ni基催化剂

Abstract:

Due to its ordered lamellar structure, high specific area and adjustable structural properties, the 2-D layered nanomaterial of nickel phyllosilicate (Ni-PS) has been received much attention as the functional materials in the magnetic, electrical and catalytic fields. This paper reviewed the recent progress on the synthetic mechanism and fabrication approaches of Ni-PS firstly, and then a number of useful modification strategies, including utilization of organic silicon sources, metal-ions/oxides doping, synthesizing nanotubular and compositing with carbon materials, which can improve the structure and performance of Ni-PS, were presented as well. The applications of Ni-PS or as a precursor in the formation of high-quality metallic nanoparticles, electrode materials, magnetic carriers and absorbers for heavy metal ions were described in detail. In particular, Ni-PS was very popular in preparing the novel and high-effective nickel-based catalysts thanks to its characteristic laminated structures which restrained the diffusion of nickel atoms as well as provided protection to the nanoparticles from oxidation and sintering during the reduction process. The resulted catalysts were widely used for the preparation of syngas, hydrogen production, hydrogenation reaction and chemical looping reforming, etc. Finally, it was suggested that much attention should be paid on the fabrication and modification of Ni-PS to generate high performance and multi-functional Ni-PS and the composites, promoting their applications in the functional and engineering materials.

Key words: nickel phyllosilicate(Ni-PS), synthetic methods, modifications, precursor, electrode materials, magnetic carriers, nickel based catalyst