NDLI: Self-assembly of Pt-based truncated octahedral crystals into metal-frameworks towards enhanced electrocatalytic activity

Content Provider	Royal Society of Chemistry (RSC)
Author	Li, Tingting Ren, Huan Han, Heyou Zuo, Yunpeng Zhu, Guilin Han, Kai Zhuang, Lin
Copyright Year	2016
Abstract	Self-assembly of Pt-based truncated octahedral crystals into frameworks has been demonstrated in this paper by suitably adjusting the reactant concentrations and temperature. This approach allows for control of Pt or Pt-based nano-crystals with subnanometer-size as building blocks for metal-frameworks (MFs): sub-micron porous tubes (SMPBs) and mesh (M). Both the Pt-based MFs exhibit enhanced activity and better stability for the oxygen reduction reaction (ORR) and methanol-oxidation reaction (MOR) than PtMFs. The mass activity (MA) of the Pt4Cu-SMPBs (0.619 A mg−1@0.9 V) exhibited 5.12 times enhancement over the commercial Pt/C (0.121 A mg−1@0.9 V) catalyst towards the ORR and the value is well beyond the U.S. Department of Energy's 2017 target (0.44 A mgPt−1 @0.9 V). After 8000 cycles of accelerated durability test, the MA of the Pt4Cu-SMPBs (0.411 A mg−1@0.9 V) was still greater than the values of the Pt/C. These metal-framework materials provide a new direction to obtain highly open nanostructures which would readily improve their catalytic properties in both activity and durability while reducing their loading.
Starting Page	15169
Ending Page	15180
Page Count	12
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	4
Issue Number	39
Journal	Journal of Materials Chemistry A
DOI	10.1039/c6ta05936h
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	ORR Department of Energy Truncated octahedron Redox Master's degree
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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