Preparation and microstructure characterization of Ni/TiO2 nanocomposite--颗粒学报PARTICUOLOGY

Wu, Y., Wu, X., & Zhang, L. (2003). Preparation and microstructure characterization of Ni/TiO2 nanocomposite. China Particuology, 1(6), 262-265. https://doi.org/10.1016/S1672-2515(07)60006-2

Preparation and microstructure characterization of Ni/TiO₂ nanocomposite

Yucheng Wu ^{a b *}, Xia Wu ^a, Lide Zhang ^b

a Faculty of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, P. R. China
b Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China

10.1016/S1672-2515(07)60006-2

Volume 1, Issue 6, December 2003, Pages 262-265

Received 27 September 2003, Accepted 12 November 2003, Available online 27 November 2007.

E-mail: ycwu@issp.ac.cn

Highlights

Abstract

Homogeneous Ni²⁺-doped titania gel was synthesized by a sol-gel process, and the xerogel was then obtained through aging and drying, leading to the formation of Ni/TiO₂ nanocomposite after heat treatment under a suitable reducing atmosphere. The resulting nanocomposite was characterized by TGA-DSC, TEM, XRD and BET methods. The results show that the structure and grain size of the nanocomposites could be manipulated by altering the heat-treatment conditions, and that the nanocomposite possesses a mesoporous structure with a pore radius of ca. 28 nm and a specific surface area of 49.1 m²·g⁻¹. It is demonstrated that the nanosized Ni dispersion in the titania matrix significantly affects the anatase-rutile phase transformation.

Graphical abstract

Keywords

sol-gel; Ni/TiO₂; nanocomposite; mesoporus structure

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