Carbon nanotubes supported cerium dioxide and platinum nanohybrids: Layer-by-layer synthesis and enhanced electrocatalytic activity for methanol oxidation

被引：36

作者：

Lou, Xinyuan ^{[1
]}

Chen, Jiayi ^{[1
]}

Wang, Mengdi ^{[1
]}

Gu, Jialei ^{[1
]}

Wu, Ping ^{[1
]}

Sun, Dongmei ^{[1
]}

Tang, Yawen ^{[1
]}

机构：

[1] Nanjing Normal Univ, Coll Chem & Mat Sci, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Jiangsu, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2015年 / 287卷

关键词：

Cerium dioxide; Platinum; Nanohybrids; Methanol oxidation; Fuel cells; OXYGEN REDUCTION REACTION; FUEL-CELLS; CATALYTIC-ACTIVITY; ELECTROOXIDATION REACTION; ELECTROCHEMICAL SYNTHESIS; ANODIC-OXIDATION; PT-RU; NANOPARTICLES; PERFORMANCE; OXIDE;

D O I：

10.1016/j.jpowsour.2015.04.046

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：

We successfully synthesize carbon nanotubes (CNTs) supported cerium dioxide and platinum (Pt/CeO2/CNTs) nanohybrids via layer-by-layer assembly. The composition, morphology and structure of the as-prepared Pt/CeO2/CNTs nanohybrids are characterized by transmission electron microscopy (TEM), energy-dispersive X-ray spectrometer (EDX), selected-area electron diffraction (SAED), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and inductively coupled plasma atomic emission spectrometry (ICP-AES). By comparison of the electrocatalytic properties of the Pt/CeO2/CNTs with the Pt/CNTs, we systematically investigate the promotion effect of CeO2 on the Pt/CeO2/CNTs catalysts towards methanol oxidation. It is found that the introduction of CeO2 not only enhances the electrocatalytic activity and stability of the Pt/CeO2/CNTs catalyst for methanol oxidation but also minimizes the CO poisoning, probably accounting for the good oxygen carrying capacity of CeO2 and its high stability in acidic solution. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：203 / 210

页数：8

共 58 条

[1] Synthesis and Stability of Pd@CeO2 Core-Shell Catalyst Films in Solid Oxide Fuel Cell Anodes [J].

Adijanto, Lawrence ;

Sampath, Anirudh ;

Yu, Anthony S. ;

Cargnello, Matteo ;

Fornasiero, Paolo ;

Gorte, Raymond J. ;

Vohs, John M. .

ACS CATALYSIS, 2013, 3 (08) :1801-1809

[2] Exceptional Thermal Stability of Pd@CeO2 Core-Shell Catalyst Nanostructures Grafted onto an Oxide Surface [J].

Adijanto, Lawrence ;

Bennett, David A. ;

Chen, Chen ;

Yu, Anthony S. ;

Cargnello, Matteo ;

Fornasiero, Paolo ;

Gorte, Raymond J. ;

Vohs, John M. .

NANO LETTERS, 2013, 13 (05) :2252-2257

[3] IrO2 as a promoter of Pt-Ru for methanol electro-oxidation [J].

Baglio, V. ;

Amin, R. S. ;

El-Khatib, K. M. ;

Siracusano, S. ;

D'Urso, C. ;

Arico, A. S. .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2014, 16 (22) :10414-10418

[4] Tuning the Functionality of a Carbon Nanofiber-Pt-RuO2 System from Charge Storage to Electrocatalysis [J].

Balan, Beena K. ;

Kurungot, Sreekumar .

INORGANIC CHEMISTRY, 2012, 51 (18) :9766-9774

[5] VOLTAMMETRIC AND CHRONOPOTENTIOMETRIC STUDY OF THE ANODIC OXIDATION OF METHANOL, FORMALDEHYDE, AND FORMIC ACID [J].

BUCK, RP ;

GRIFFITH, LR .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1962, 109 (11) :1005-1013

[6] Fabrication of a nano-structured Pt-loaded cerium oxide nanowire and its anode performance in the methanol electro-oxidation reaction [J].

Chauhan, Shipra ;

Richards, Gary J. ;

Mori, Toshiyuki ;

Yan, Pengfei ;

Hill, Jonathan P. ;

Ariga, Katsuhiko ;

Zou, Jin ;

Drennan, John .

JOURNAL OF MATERIALS CHEMISTRY A, 2013, 1 (20) :6262-6270

[7] Synthesis and characterization of Pt nanoparticles with different morphologies in mesoporous silica SBA-15 for methanol oxidation reaction [J].

Chen, C. S. ;

Lai, Y. T. ;

Chen, T. C. ;

Chen, C. H. ;

Lee, J. F. ;

Hsu, C. W. ;

Kao, H. M. .

NANOSCALE, 2014, 6 (21) :12644-12654

[8] Significantly Enhancing Catalytic Activity of Tetrahexahedral Pt Nanocrystals by Bi Adatom Decoration [J].

Chen, Qing-Song ;

Zhou, Zhi-You ;

Vidal-Iglesias, Francisco J. ;

Solla-Gullon, Jose ;

Feliu, Juan M. ;

Sun, Shi-Gang .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (33) :12930-12933

[9] Formate, an active intermediate for direct oxidation of methanol on Pt electrode [J].

Chen, YX ;

Miki, A ;

Ye, S ;

Sakai, H ;

Osawa, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (13) :3680-3681

[10] In Situ FTIR Studies of Ethanol Oxidation at Polycrystalline Pt in Alkaline Solution [J].

Christensen, P. A. ;

Jones, S. W. M. ;

Hamnett, A. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (46) :24681-24689

← 1 2 3 4 5 6 →