Extraordinary electrocatalytic performance for formic acid oxidation by the synergistic effect of Pt and Au on carbon black

被引：87

作者：

Fan, Hongsheng ^{[1
,2
]}

Cheng, Ming ^{[1
]}

Wang, Lei ^{[1
]}

Song, Yuanjun ^{[1
]}

Cui, Yimin ^{[2
]}

Wang, Rongming ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Math & Phys, Beijing Key Lab Magnetophotoelect Composite & Int, Beijing 100083, Peoples R China

[2] Beihang Univ, Dept Phys, Beijing 100191, Peoples R China

来源：

NANO ENERGY | 2018年 / 48卷

基金：

中国国家自然科学基金;

关键词：

Formic acid oxidation; Pt-Au/C electrocatalysts; Synergistic effect; Ultrasound-assisted synthesis; High-quality loading; Surfactant-free strategies; OXYGEN REDUCTION REACTION; HIGHLY EFFICIENT; PT/C CATALYST; NANOPARTICLES; ELECTROOXIDATION; MECHANISM; SURFACES; ENHANCEMENT; ELECTRODES; PT(111);

D O I：

10.1016/j.nanoen.2018.03.018

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Improving catalyst performance and understanding reaction mechanism of formic acid electrooxidation (FAO), a typical anodic reaction in fuel cells, are of technological and scientific importance. Here, Pt-Au/C catalysts were designed and synthesized for catalyzing the FAO reaction. An ultrasound-assisted method was developed to enable the uniform and dense loading of Pt and Au on carbon black without any surfactant. The Pt-Au/C sample with a Pt/Au atomic ratio of 32: 68 exhibits an FAO catalytic activity of 14.5 A mg(Pt)(-1), which is 153 times higher than that of Pt/C. The extraordinary performance is attributed to the optimized synergistic effect of Pt and Au. Density functional theory calculations disclose that the neighboring Au decreases the reaction energy barriers of the direct pathway on Pt. This work demonstrates a promising FAO catalyst and an effective strategy to obtain supported catalysts.

引用

页码：1 / 9

页数：9

共 41 条

[1] Insights into the Electrooxidation of Formic Acid on Pt and Pd Shells on Au Core Surfaces via SERS at Dendritic Au Rod Electrodes [J].

Ahn, Miri ;

Kim, Jongwon .

JOURNAL OF PHYSICAL CHEMISTRY C, 2013, 117 (46) :24438-24445

[2] The characterization of acoustic cavitation bubbles - An overview [J].

Ashokkumar, Muthupandian .

ULTRASONICS SONOCHEMISTRY, 2011, 18 (04) :864-872

[3] PROJECTOR AUGMENTED-WAVE METHOD [J].

BLOCHL, PE .

PHYSICAL REVIEW B, 1994, 50 (24) :17953-17979

[4] From channeled to hollow CoO octahedra: controlled growth, structural evolution and energetic applications [J].

Cheng, Ming ;

Duan, Sibin ;

Fan, Hongsheng ;

Wang, Rongming .

CRYSTENGCOMM, 2016, 18 (36) :6849-6859

[5] Mechanism of the Electrocatalytic Oxidation of Formic Acid on Metals [J].

Cuesta, Angel ;

Cabello, Gema ;

Osawa, Masatoshi ;

Gutierrez, Claudio .

ACS CATALYSIS, 2012, 2 (05) :728-738

[6] Adsorbed formate: the key intermediate in the oxidation of formic acid on platinum electrodes [J].

Cuesta, Angel ;

Cabello, Gema ;

Gutierrez, Claudio ;

Osawa, Masatoshi .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2011, 13 (45) :20091-20095

[7] Layer-controlled Pt-Ni porous nanobowls with enhanced electrocatalytic performance [J].

Fan, Hongsheng ;

Cheng, Ming ;

Wang, Zhenlei ;

Wang, Rongming .

NANO RESEARCH, 2017, 10 (01) :187-198

[8] Understanding the Effect of the Adatoms in the Formic Acid Oxidation Mechanism on Pt(111) Electrodes [J].

Ferre-Vilaplana, Adolfo ;

Victor Perales-Rondon, Juan ;

Feliu, Juan M. ;

Herrero, Enrique .

ACS CATALYSIS, 2015, 5 (02) :645-654

[9] Lattice Strain Distributions in Individual Dealloyed Pt-Fe Catalyst Nanoparticles [J].

Gan, Lin ;

Yu, Rong ;

Luo, Jun ;

Cheng, Zhiying ;

Zhu, Jing .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2012, 3 (07) :934-938

[10] Revealing the Active Intermediates in the Oxidation of Formic Acid on Au and Pt(111) [J].

Gao, Wang ;

Song, Er Hong ;

Jiang, Qing ;

Jacob, Timo .

CHEMISTRY-A EUROPEAN JOURNAL, 2014, 20 (35) :11005-11012

← 1 2 3 4 5 →