Superior methanol electrooxidation activity and CO tolerance of mesoporous helical nanospindle-like CeO2 modified Pt/C

被引：12
作者：
Chen, Jing [1 ]
Li, Songmei [1 ]
Du, Juan [1 ]
Liu, Jianhua [1 ]
Yu, Mei [1 ]
Meng, Shiming [1 ]
Wang, Bo [1 ]
机构：
[1] Beihang Univ, Sch Mat Sci & Engn, Key Lab Aerosp Adv Mat & Performance, Minist Educ, Beijing 100191, Peoples R China
来源：
RSC ADVANCES | 2015年 / 5卷 / 79期
基金：
中国国家自然科学基金;
关键词：
METAL-OXIDE; ELECTROCATALYTIC PROPERTIES; ETHANOL ELECTROOXIDATION; FUEL-CELLS; OXIDATION; CATALYST; CARBON; NANOPARTICLES; NANOSTRUCTURE; PERFORMANCE;
D O I：
10.1039/c5ra09047d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In an attempt to enhance the electrocatalytic activity and CO tolerance of ceria modified Pt/C electrodes, a novel structured ceria material has been developed. Left-handed helical CeO2 nano-spindles with mesoporous structures were successfully synthesized through a template-free based precursor method on a large scale. By a microwave-assisted polyol synthesis process, the ceria modified Pt/C electrocatalysts were synthesized. The helical CeO2 nanospindle based electrode Pt@Heli-CeO2/C exhibits superior electrochemically active surface areas, and significantly enhanced methanol oxidation catalytic activity and CO antipoisoning activity, compared to Pt/C and a nano-octahedral CeO2 modified electrode Pt@Octa-CeO2/C. The experimental results show that Pt@Heli-CeO2/C possesses 8.2 times and 3.2 times higher activity for methanol electrooxidation than Pt/C and Pt@Octa-CeO2/C, respectively. This remarkable enhancement could be attributed to the reasons as follows: compared to octahedral CeO2, the unique helical CeO2 is more conductive with better electron transfer and can provide more active surface sites to strengthen the support-metal interactions based on an electronic transfer mechanism from CeO2 to Pt, thus helical CeO2 can promote better dispersion of the Pt(0) nanocrystallites and a high concentration of metallic Pt(0) in the composition.
引用
收藏
页码：64261 / 64267
页数：7
相关论文
共 49 条
[1]   An XPS study on oxidation states of Pt and its alloys with Co and Cr and its relevance to electroreduction of oxygen [J].
Aricò, AS ;
Shukla, AK ;
Kim, H ;
Park, S ;
Min, M ;
Antonucci, V .
APPLIED SURFACE SCIENCE, 2001, 172 (1-2) :33-40
[2]  
CARRASCO J, 2015, ANGEW CHEM INT EDIT, V127, P1
[3]   A novel Pt/CeO2 catalyst coated with nitrogen-doped carbon with excellent performance for DMFCs [J].
Chu, Y. Y. ;
Cao, J. ;
Dai, Z. ;
Tan, X. Y. .
JOURNAL OF MATERIALS CHEMISTRY A, 2014, 2 (11) :4038-4044
[4]   A Novel Structural Design of a Pt/C-CeO2 Catalyst with Improved Performance for Methanol Electro-Oxidation by β-Cyclodextrin Carbonization [J].
Chu, Yuan-Yuan ;
Wang, Zhen-Bo ;
Jiang, Zheng-Zhi ;
Gu, Da-Ming ;
Yin, Ge-Ping .
ADVANCED MATERIALS, 2011, 23 (27) :3100-+
[5]   Platinum-Rhenium Synergy on Reducible Oxide Supports in Aqueous-Phase Glycerol Reforming [J].
Ciftci, Aysegul ;
Eren, Seda ;
Ligthart, D. A. J. Michel ;
Hensen, Emiel J. M. .
CHEMCATCHEM, 2014, 6 (05) :1260-1269
[6]   Porous Hollow Nanorod Arrays Composed of Alternating Pt and Pd Nanocrystals with Superior Electrocatalytic Activity and Durability for Methanol Oxidation [J].
Ding, Liang-Xin ;
Liang, Chao-Lun ;
Xu, Han ;
Wang, An-Liang ;
Tong, Ye-Xiang ;
Li, Gao-Ren .
ADVANCED MATERIALS INTERFACES, 2014, 1 (03)
[7]  
Faro M. Lo, 2014, CHEMELECTROCHEM, V1, P1395
[8]   Multiphase Nanostructure of a Quinary Metal Oxide Electrocatalyst Reveals a New Direction for OER Electrocatalyst Design [J].
Haber, Joel A. ;
Anzenburg, Eitan ;
Yano, Junko ;
Kisielowski, Christian ;
Gregoire, John M. .
ADVANCED ENERGY MATERIALS, 2015, 5 (10)
[9]   Origin of the current peak of negative scan in the cyclic voltammetry of methanol electro-oxidation on Pt-based electrocatalysts: a revisit to the current ratio criterion [J].
Hofstead-Duffy, Augusta M. ;
Chen, De-Jun ;
Sun, Shi-Gang ;
Tong, YuYe J. .
JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (11) :5205-5208
[10]   Rational Construction of Strongly Coupled Metal-Metal Oxide-Graphene Nanostructure with Excellent Electrocatalytic Activity and Durability [J].
Huang, Haoliang ;
Liu, Yingju ;
Gao, Qiongzhi ;
Ruan, Weishuo ;
Lin, Xiaomin ;
Li, Xin .
ACS APPLIED MATERIALS & INTERFACES, 2014, 6 (13) :10258-10264
12345