Highly branched platinum nanolance assemblies by polyallylamine functionalization as superior active, stable, and alcohol-tolerant oxygen reduction electrocatalysts

被引：64

作者：

Fu, Gengtao ^{[2
]}

Jiang, Xian ^{[2
]}

Gong, Mingxing ^{[2
]}

Chen, Yu ^{[1
,2
]}

Tang, Yawen ^{[2
]}

Lin, Jun ^{[2
]}

Lu, Tianhong ^{[2
]}

机构：

[1] Shaanxi Normal Univ, Sch Mat Sci & Engn, Xian 710062, Peoples R China

[2] Nanjing Normal Univ, Sch Chem & Mat Sci, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Jiangsu, Peoples R China

来源：

NANOSCALE | 2014年 / 6卷 / 14期

关键词：

NANOPARTICLES; NANOCATALYSTS; CATALYST; PT(111); NANOCRYSTALS; STABILITY; SURFACES; GRAPHENE; ALLOYS; SHAPE;

D O I：

10.1039/c4nr00947a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The chemical functionalization of platinum (Pt) nanostructures is becoming a new trend in electrocatalysts designs. Meanwhile, highly branched Pt nanostructures are highly exciting electrocatalysts with high activity and stability owing to their specific physical and chemical properties. In this work, the polyallylamine (PAH) functionalized Pt nanolance assemblies (Pt NLAs) have been successfully synthesized by chemical reduction of PAH-Pt-II complex using formaldehyde (HCHO) in a two-phase water-complex system. The as-prepared Pt NLAs are highly branched and three-dimensionally (3D) interconnected nanostructures, which are composed of many long Pt nanolances in various directions. PAH functionalization improves the electrocatalytic activity of the Pt NLAs for an oxygen reduction reaction (ORR) because of high interface proton concentration on the Pt surface and excellent anti-oxidation ability of the Pt nanolances. Meanwhile, the PAH molecules bound on the Pt NLAs surface act as barrier networks to restrain accessibility of alcohol, exhibiting a high ORR selectivity. In addition, the PAH functionalized Pt NLAs show excellent durability for the ORR due to their particular 3D interconnected structure. The work demonstrates that the PAH functionalized Pt NLAs are indeed promising cathodic electrocatalysts for practical application in direct alcohol fuel cells.

引用

页码：8226 / 8234

页数：9

共 41 条

[1] Facile Production of Ordered 3D Platinum Nanowire Networks with "Single Diamond" Bicontinuous Cubic Morphology [J].

Akbar, Samina ;

Elliott, Joanne M. ;

Rittman, Martyn ;

Squires, Adam M. .

ADVANCED MATERIALS, 2013, 25 (08) :1160-1164

[2]

[Anonymous], 2011, Angew, Chemie, DOI [DOI 10.1002/ANGE.201007036, 10.1002/ange.201007036]

[3] Synthesis of FePt nanocubes and their oriented self-assembly [J].

Chen, Min ;

Kim, Jaemin ;

Liu, J. P. ;

Fan, Hongyou ;

Sun, Shouheng .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (22) :7132-7133

[4] Single crystalline Pt nanotubes with superior electrocatalytic stability [J].

Ci, Suqin ;

Zou, Jianping ;

Zeng, Guisheng ;

Luo, Shenglian ;

Wen, Zhenhai .

JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (33) :16732-16737

[5] Comparison of Reaction Energetics for Oxygen Reduction Reactions on Pt(100), Pt(111), Pt/Ni(100), and Pt/Ni(111) Surfaces: A First-Principles Study [J].

Duan, Zhiyao ;

Wang, Guofeng .

JOURNAL OF PHYSICAL CHEMISTRY C, 2013, 117 (12) :6284-6292

[6] Quantitative Study of Non-Covalent Interactions at the Electrode-Electrolyte Interface Using Cyanide-Modified Pt(111) Electrodes [J].

Escudero-Escribano, Maria ;

Zoloff Michoff, Martin E. ;

Leiva, Ezequiel P. M. ;

Markovic, Nenad M. ;

Gutierrez, Claudio ;

Cuesta, Angel .

CHEMPHYSCHEM, 2011, 12 (12) :2230-2234

[7] One-Pot Water-Based Synthesis of Pt-Pd Alloy Nanoflowers and Their Superior Electrocatalytic Activity for the Oxygen Reduction Reaction and Remarkable Methanol-Tolerant Ability in Acid Media [J].

Fu, Gengtao ;

Wu, Ke ;

Lin, Jun ;

Tang, Yawen ;

Chen, Yu ;

Zhou, Yiming ;

Lu, Tianhong .

JOURNAL OF PHYSICAL CHEMISTRY C, 2013, 117 (19) :9826-9834

[8] Polyallylamine-directed green synthesis of platinum nanocubes. Shape and electronic effect codependent enhanced electrocatalytic activity [J].

Fu, Gengtao ;

Wu, Ke ;

Jiang, Xian ;

Tao, Lin ;

Chen, Yu ;

Lin, Jun ;

Zhou, Yiming ;

Wei, Shaohua ;

Tang, Yawen ;

Lu, Tianhong ;

Xia, Xinghua .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2013, 15 (11) :3793-3802

[9] One-step synthesis and catalytic properties of porous palladium nanospheres [J].

Fu, Gengtao ;

Han, Wei ;

Yao, Lifang ;

Lin, Jun ;

Wei, Shaohua ;

Chen, Yu ;

Tang, Yawen ;

Zhou, Yiming ;

Lu, Tianhong ;

Xia, Xinghua .

JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (34) :17604-17611

[10] Experimental Methods for Quantifying the Activity of Platinum Electrocatalysts for the Oxygen Reduction Reaction [J].

Garsany, Yannick ;

Baturina, Olga A. ;

Swider-Lyons, Karen E. ;

Kocha, Shyam S. .

ANALYTICAL CHEMISTRY, 2010, 82 (15) :6321-6328

← 1 2 3 4 5 →