Dentritic platinum-palladium/palladium core-shell nanocrystals/reduced graphene oxide: One-pot synthesis and excellent electrocatalytic performances

作者：Li, Dong-Ning; Wang, Ai-Jun; Wei, Jie; Zhang, Qian-Li^*; Feng, Jiu-Ju^*

来源：Journal of Colloid and Interface Science, 2018, 514: 93-101.

DOI：10.1016/j.jcis.2017.11.077

• Dentritic nanocrystals
• Poly-L-lysine
• Reduced graphene oxide
• Glycerol oxidation
• Hydrogen evolution

Herein, we developed a facile one-pot co-reduction method to fabricate highly dentritic platinum-palladium/palladium core-shell nanocrystals on reduced graphene oxide (PtPd@Pd NCs/rGO), where poly-L-lysine (PLL) worked as the eco-friendly structure director and stabilizer. The nanocomposite was mainly characterized by microscopic analysis, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and thermogravimetric analysis (TGA), along with the discussion of the formation mechanism. The synthesized PtPd@Pd NCs/rGO have the enlarged electrochemically active surface area (ECSA) of 51.65 m(2) g(-1), showing 1.3 folds enhancement in the peak current density relative to commercial Pt/C (50 wt%) for glycerol oxidation reaction (GOR), coupled with the small Tafel slope of 28 mV dec(-1) for hydrogen evolution reaction (HER).

• 出版日期2018-3-15
• 单位苏州科技大学; 浙江师范大学