In situ preparation and high electrocatalytic activity of binary Pd-Ni nanocatalysts with low Pd-loadings》.pdfVIP

Electrochimica Acta 182 (2015) 96–103 Contents lists available at ScienceDirect Electrochimica Acta journal homepa ge: www.elsev /locate/electacta In situ preparation and high electrocatalytic activity of binary Pd-Ni nanocatalysts with low Pd-loadings * Qingfeng Yi , Qinghua Chen School of chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China A R T I C L E I N F O A B S T R A C T Article history: Palladium nanoparticles supported on multi-walled carbon nanotube (MWCNT), with ultra-low Pd Received 19 July 2015 loadings (wt%) of 1.1%-1.9%, have been prepared through an in situ reduction of Pd2+ by Ni nanoparticles Received in revised form 5 September 2015 immobilized on MWCNT. That is, Ni nanoparticles are firstly loaded on MWCNT by chemical reduction Accepted 9 September 2015 method to fabricate the catalyst nanoNi/MWCNT. Then, aqueous PdCl2 solution with various Available online 11 September 2015 concentrations is added to the nanoNi/MWCNT catalyst stepwise, leading to the formation of Pd nanoparticles and subsequent in situ deposition on the nanoNi/MWCNT. The as-synthesized nano- Keywords: catalysts (Pd Ni /MWCNT, Pd Ni /MWCNT and Pd Ni /MWCNT) have been characterized by SEM, Pd