title: Preparation of Janus Pd/SiO₂ nanocomposite particles in inverse miniemulsions.
abstract: Janus Pd/SiO2 nanocomposite particles (NCPs) were successfully synthesized through a combination of the sol-gel process of tetramethoxysilane in inverse miniemulsions and in situ reduction of Pd salts via a gas diffusion process of hydrazine. The formation of Pd nanoparticles (NPs) was verified by X-ray diffraction. The Janus morphology of the Pd/SiO2 NCPs was confirmed by microscopic observation. The Pd/SiO2 NCPs displayed a mesoporous structure. The content of Pd NPs in the NCPs could be conveniently adjusted by the K2PdCl4 loading. A formation mechanism of the Janus Pd/SiO2 NCPs was proposed. The mesoporous Janus Pd/SiO2 NCPs show good catalytic activity toward the reduction of p-nitrophenol with NaBH4.
authors: Zhihai
authors: Z
authors: Cao
authors: Hangnan
authors: H
authors: Chen
authors: ‡College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Xuelin Street 16, Hangzhou, Zhejiang 310036, People's Republic of China.
authors: Shudi
authors: S
authors: Zhu
authors: ‡College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Xuelin Street 16, Hangzhou, Zhejiang 310036, People's Republic of China.
authors: Wenwen
authors: W
authors: Zhang
authors: ‡College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Xuelin Street 16, Hangzhou, Zhejiang 310036, People's Republic of China.
authors: Xufang
authors: X
authors: Wu
authors: §State Key Laboratory of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, People's Republic of China.
authors: Guorong
authors: G
authors: Shan
authors: ∥Institute of Organic Chemistry III, Macromolecular Chemistry and Organic Materials, University of Ulm, Albert-Einstein-Allee 11, Ulm 89081, Germany.
authors: Ulrich
authors: U
authors: Ziener
authors: Dongming
authors: D
authors: Qi