title: Synthesis of triple-layered Ag@Co@Ni core-shell nanoparticles for the catalytic dehydrogenation of ammonia borane.
abstract: Triple-layered Ag@Co@Ni core-shell nanoparticles (NPs) containing a silver core, a cobalt inner shell, and a nickel outer shell were formed by an in situ chemical reduction method. The thickness of the double shells varied with different cobalt and nickel contents. Ag0.04 @Co0.48 @Ni0.48 showed the most distinct core-shell structure. Compared with its bimetallic core-shell counterparts, this catalyst showed higher catalytic activity for the hydrolysis of NH3 BH3 (AB). The synergetic interaction between Co and Ni in Ag0.04 @Co0.48 @Ni0.48 NPs may play a critical role in the enhanced catalytic activity. Furthermore, cobalt-nickel double shells surrounding the silver core in the special triple-layered core-shell structure provided increasing amounts of active sites on the surface to facilitate the catalytic reaction. These promising catalysts may lead to applications for AB in the field of fuel cells.
authors.affiliation: Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Key Laboratory of Advanced Energy Materials Chemistry (MOE), Institute of New Energy Material Chemistry, Tianjin Key Lab on Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin, 30007 (P.R. China), Fax: (+86) 22 23503639.
authors.forename: Fangyuan
authors.initials: F
authors.lastname: Qiu
authors.forename: Guang
authors.initials: G
authors.lastname: Liu
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.forename: Ying
authors.initials: Y
authors.lastname: Wang
authors.forename: Changchang
authors.initials: C
authors.lastname: Xu
authors.forename: Cuihua
authors.initials: C
authors.lastname: An
authors.forename: Chengcheng
authors.initials: C
authors.lastname: Chen
authors.forename: Yanan
authors.initials: Y
authors.lastname: Xu
authors.forename: Yanan
authors.initials: Y
authors.lastname: Huang
authors.forename: Yijing
authors.initials: Y
authors.lastname: Wang
authors.forename: Lifang
authors.initials: L
authors.lastname: Jiao
authors.forename: Huatang
authors.initials: H
authors.lastname: Yuan
keywords: cobalt; hydrolysis; layered compounds; nickel; silver