Gaseous NH3 Confers Porous Pt Nanodendrites Assisted by Halides | Zendy

Shuanglong Lu | Zendy; Kamel Eid | Zendy; Weifeng Li | Zendy; Xueqin Cao | Zendy; Yue Pan | Zendy; Jun Guo | Zendy; Liang Wang | Zendy; Hongjing Wang | Zendy; Hongwei Gu | Zendy

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Gaseous NH3 Confers Porous Pt Nanodendrites Assisted by Halides

Author(s) -

Shuanglong Lu,

Kamel Eid,

Weifeng Li,

Xueqin Cao,

Yue Pan,

Jun Guo,

Liang Wang,

Hongjing Wang,

Hongwei Gu

Publication year - 2016

Publication title -

scientific reports

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.24

H-Index - 213

ISSN - 2045-2322

DOI - 10.1038/srep26196

Subject(s) - halide , nanocrystal , catalysis , reagent , porosity , chemical engineering , materials science , platinum , metal , chemistry , nanotechnology , combinatorial chemistry , inorganic chemistry , organic chemistry , engineering

Tailoring the morphology of Pt nanocrystals (NCs) is of great concern for their enhancement in catalytic activity and durability. In this article, a novel synthetic strategy is developed to selectively prepare porous dendritic Pt NCs with different structures for oxygen reduction reaction (ORR) assisted by NH 3 gas and halides (F − , Cl − , Br − ). The NH 3 gas plays critical roles on tuning the morphology. Previously, H 2 and CO gas are reported to assist the shape control of metallic nanocrystals. This is the first demonstration that NH 3 gas assists the Pt anisotropic growth. The halides also play important role in the synthetic strategy to regulate the formation of Pt NCs. As-made porous dendritic Pt NCs, especially when NH 4 F is used as a regulating reagent, show superior catalytic activity for ORR compared with commercial Pt/C catalyst and other previously reported Pt-based NCs.

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