Shape-Controlled Synthesis of Concave Pt and Willow-Like Pt Nanocatalysts via Electrodeposition with Hydrogen Adsorption/Desorption and Investigation of Their Electrocatalytic Performances toward Ethanol Oxidation Reaction

被引：35

作者：

Liu, Xuan ^{[1
]}

Wang, Kuankuan ^{[1
]}

Zhou, Luming ^{[1
]}

Pu, Houkang ^{[1
]}

Zhang, Te ^{[1
]}

Jia, Jia ^{[1
]}

Deng, Yujia ^{[1
]}

机构：

[1] Qingdao Univ, Sch Chem & Chem Engn, Qingdao 266071, Peoples R China

来源：

ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2020年 / 8卷 / 16期

基金：

中国国家自然科学基金;

关键词：

platinum nanocrystals; shape-controlled; electrodeposition; hydrogen adsorption/desorption; ethanol oxidation reaction; HIGH-INDEX FACETS; ONE-POT SYNTHESIS; PLATINUM NANOCRYSTALS; OXYGEN REDUCTION; CAPPING AGENTS; FACILE REMOVAL; NANOPARTICLES; EVOLUTION; LIGANDS; ENERGY;

D O I：

10.1021/acssuschemeng.0c00967

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Without introducing any surfactants and capping agents, concave Pt nanocubes, willow-like Pt nanocrystals, and spherical Pt nanoparticles were synthesized at different deposition potentials using a square-wave potential electrodeposition procedure. As the deposition potentials decreased from the double layer region to the hydrogen underpotential deposition region and finally into the hydrogen evolution reaction region under acidic conditions, the morphology of Pt nanocrystals changed from spherical Pt nanoparticles to willow-like Pt nanocrystals and finally to concave Pt nanocubes. We took advantage of the unique features of hydrogen adsorption/desorption on the surface of Pt in different potential regions to achieve the shape-controlled synthesis of Pt nanocrystals, and the different degrees of interaction between hydrogen and Pt played a key role in obtaining nanocrystals with various shapes. Concave Pt nanocubes exhibited excellent electrocatalytic activity to the ethanol oxidation reaction, as compared to commercial Pt/C catalysts. The peak current density in the positive scan of concave Pt nanocubes was 2.3 mA cm(-2), which was 4.7 times higher than that of commercial Pt/C.

引用

页码：6449 / 6457

页数：9

共 47 条

[1] NanoElectrocatalysis: From Basic Research to Applications in Energy Conversion [J].

Arenz, Matthias .

CHIMIA, 2018, 72 (05) :276-285

[2] Biaxially strained PtPb/Pt core/shell nanoplate boosts oxygen reduction catalysis [J].

Bu, Lingzheng ;

Zhang, Nan ;

Guo, Shaojun ;

Zhang, Xu ;

Li, Jing ;

Yao, Jianlin ;

Wu, Tao ;

Lu, Gang ;

Ma, Jing-Yuan ;

Su, Dong ;

Huang, Xiaoqing .

SCIENCE, 2016, 354 (6318) :1410-1414

[3] Facet and dimensionality control of Pt nanostructures for efficient oxygen reduction and methanol oxidation electrocatalysts [J].

Bu, Lingzheng ;

Feng, Yonggang ;

Yao, Jianlin ;

Guo, Shaojun ;

Guo, Jun ;

Huang, Xiaoqing .

NANO RESEARCH, 2016, 9 (09) :2811-2821

[4] Surface engineering of hierarchical platinum-cobalt nanowires for efficient electrocatalysis [J].

Bu, Lingzheng ;

Guo, Shaojun ;

Zhang, Xu ;

Shen, Xuan ;

Su, Dong ;

Lu, Gang ;

Zhu, Xing ;

Yao, Jianlin ;

Guo, Jun ;

Huang, Xiaoqing .

NATURE COMMUNICATIONS, 2016, 7

[5] Efficient Removal of Organic Ligands from Supported Nanocrystals by Fast Thermal Annealing Enables Catalytic Studies on Well-Defined Active Phases [J].

Cargnello, Matteo ;

Chen, Chen ;

Diroll, Benjamin T. ;

Doan-Nguyen, Vicky V. T. ;

Gorte, Raymond J. ;

Murray, Christopher B. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2015, 137 (21) :6906-6911

[6] Shape-controlled synthesis of platinum nanocrystals for catalytic and electrocatalytic applications [J].

Chen, Jingyi ;

Lim, Byungkwon ;

Lee, Eric P. ;

Xia, Younan .

NANO TODAY, 2009, 4 (01) :81-95

[7] Size-Controlled Synthesis of Platinum-Copper Hierarchical Trigonal Bipyramid Nanoframes [J].

Chen, Sheng ;

Su, Hongyang ;

Wang, Youcheng ;

Wu, Wenlong ;

Zeng, Jie .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2015, 54 (01) :108-113

[8] Highly Durable and Active Pt-Based Nanoscale Design for Fuel-Cell Oxygen-Reduction Electrocatalysts [J].

Chung, Dong Young ;

Yoo, Ji Mun ;

Sung, Yung-Eun .

ADVANCED MATERIALS, 2018, 30 (42)

[9] Oxygen Reduction Reaction on Pt Overlayers Deposited onto a Gold Film: Ligand, Strain, and Ensemble Effect [J].

Deng, Yu-Jia ;

Tripkovic, Vladimir ;

Rossmeisl, Jan ;

Arenz, Matthias .

ACS CATALYSIS, 2016, 6 (02) :671-676

[10] Alloy tetrahexahedral Pd-Pt catalysts: enhancing significantly the catalytic activity by synergy effect of high-index facets and electronic structure [J].

Deng, Yu-Jia ;

Tian, Na ;

Zhou, Zhi-You ;

Huang, Rui ;

Liu, Zi-Li ;

Xiao, Jing ;

Sun, Shi-Gang .

CHEMICAL SCIENCE, 2012, 3 (04) :1157-1161

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